To faciltiate users, the United States of America is divided into regions known as Area Codes, corresponding to particular geographic telephone dialing areas.
An area code denotes the regional location of a phone number within the United States.
The Area Code table below shows an area codes each.
Area Code 712 listing, by city
@The cities listed with each area code are the major cities for that area code;
| City / State | Area code | Zip Code | County | Iso | |
|---|---|---|---|---|---|
| (Iowa) | 712 | 50839 | Adams | US-IA | |
| Akron (Iowa) | 712 | 51001 | Plymouth | US-IA | |
| Akron (Iowa) | 712 | 51001 | Plymouth | US-IA | |
| Akron (Iowa) | 712 | 51001 | Plymouth | US-IA | |
| Albert City (Iowa) | 712 | 50510 | Buena Vista | US-IA | |
| Albert City (Iowa) | 712 | 50510 | Buena Vista | US-IA | |
| Albert City (Iowa) | 712 | 50510 | Buena Vista | US-IA | |
| Alta (Iowa) | 712 | 51002 | Buena Vista | US-IA | |
| Alta (Iowa) | 712 | 51002 | Buena Vista | US-IA | |
| Alta (Iowa) | 712 | 51002 | Buena Vista | US-IA | |
| Alton (Iowa) | 712 | 51003 | Sioux | US-IA | |
| Alton (Iowa) | 712 | 51003 | Sioux | US-IA | |
| Alton (Iowa) | 712 | 51003 | Sioux | US-IA | |
| Alvord (Iowa) | 712 | 51230 | Lyon | US-IA | |
| Alvord (Iowa) | 712 | 51230 | Lyon | US-IA | |
| Alvord (Iowa) | 712 | 51230 | Lyon | US-IA | |
| Anita (Iowa) | 712 | 50020 | Cass | US-IA | |
| Anita (Iowa) | 712 | 50020 | Cass | US-IA | |
| Anita (Iowa) | 712 | 50020 | Cass | US-IA | |
| Anthon (Iowa) | 712 | 51004 | Woodbury | US-IA | |
| Anthon (Iowa) | 712 | 51004 | Woodbury | US-IA | |
| Anthon (Iowa) | 712 | 51004 | Woodbury | US-IA | |
| Arcadia (Iowa) | 712 | 51430 | Carroll | US-IA | |
| Arcadia (Iowa) | 712 | 51430 | Carroll | US-IA | |
| Arcadia (Iowa) | 712 | 51430 | Carroll | US-IA | |
| Archer (Iowa) | 712 | 51231 | O'Brien | US-IA | |
| Archer (Iowa) | 712 | 51231 | O'Brien | US-IA | |
| Archer (Iowa) | 712 | 51231 | O'Brien | US-IA | |
| Arion (Iowa) | 712 | 51520 | Crawford | US-IA | |
| Arion (Iowa) | 712 | 51520 | Crawford | US-IA | |
| Arion (Iowa) | 712 | 51520 | Crawford | US-IA | |
| Armstrong (Iowa) | 712 | 50514 | Emmet | US-IA | |
| Armstrong (Iowa) | 712 | 50514 | Emmet | US-IA | |
| Armstrong (Iowa) | 712 | 50514 | Emmet | US-IA | |
| Arnolds Park (Iowa) | 712 | 51331 | Dickinson | US-IA | |
| Arnolds Park (Iowa) | 712 | 51331 | Dickinson | US-IA | |
| Arnolds Park (Iowa) | 712 | 51331 | Dickinson | US-IA | |
| Arthur (Iowa) | 712 | 51431 | Ida | US-IA | |
| Arthur (Iowa) | 712 | 51431 | Ida | US-IA | |
| Arthur (Iowa) | 712 | 51431 | Ida | US-IA | |
| Ashton (Iowa) | 712 | 51232 | Osceola | US-IA | |
| Ashton (Iowa) | 712 | 51232 | Osceola | US-IA | |
| Ashton (Iowa) | 712 | 51232 | Osceola | US-IA | |
| Aspinwall (Iowa) | 712 | 51432 | Crawford | US-IA | |
| Aspinwall (Iowa) | 712 | 51432 | Crawford | US-IA | |
| Aspinwall (Iowa) | 712 | 51432 | Crawford | US-IA | |
| Atlantic (Iowa) | 712 | 50022 | Cass | US-IA | |
| Atlantic (Iowa) | 712 | 50022 | Cass | US-IA | |
| Atlantic (Iowa) | 712 | 50022 | Cass | US-IA | |
| Auburn (Iowa) | 712 | 51433 | Sac | US-IA | |
| Auburn (Iowa) | 712 | 51433 | Sac | US-IA | |
| Auburn (Iowa) | 712 | 51433 | Sac | US-IA | |
| Audubon (Iowa) | 712 | 50025 | Audubon | US-IA | |
| Audubon (Iowa) | 712 | 50025 | Audubon | US-IA | |
| Audubon (Iowa) | 712 | 50025 | Audubon | US-IA | |
| Aurelia (Iowa) | 712 | 51005 | Cherokee | US-IA | |
| Aurelia (Iowa) | 712 | 51005 | Cherokee | US-IA | |
| Aurelia (Iowa) | 712 | 51005 | Cherokee | US-IA | |
| Avoca (Iowa) | 712 | 51521 | Pottawattamie | US-IA | |
| Avoca (Iowa) | 712 | 51521 | Pottawattamie | US-IA | |
| Avoca (Iowa) | 712 | 51521 | Pottawattamie | US-IA | |
| Ayrshire (Iowa) | 712 | 50515 | Palo Alto | US-IA | |
| Ayrshire (Iowa) | 712 | 50515 | Palo Alto | US-IA | |
| Ayrshire (Iowa) | 712 | 50515 | Palo Alto | US-IA | |
| Battle Creek (Iowa) | 712 | 51006 | Ida | US-IA | |
| Battle Creek (Iowa) | 712 | 51006 | Ida | US-IA | |
| Battle Creek (Iowa) | 712 | 51006 | Ida | US-IA | |
| Bayard (Iowa) | 712 | 50029 | Guthrie | US-IA | |
| Bayard (Iowa) | 712 | 50029 | Guthrie | US-IA | |
| Bayard (Iowa) | 712 | 50029 | Guthrie | US-IA | |
| Bedford (Iowa) | 712 | 50833 | Taylor | US-IA | |
| Bedford (Iowa) | 712 | 50833 | Taylor | US-IA | |
| Bedford (Iowa) | 712 | 50833 | Taylor | US-IA | |
| Blanchard (Iowa) | 712 | 51630 | Page | US-IA | |
| Blanchard (Iowa) | 712 | 51630 | Page | US-IA | |
| Blanchard (Iowa) | 712 | 51630 | Page | US-IA | |
| Blencoe (Iowa) | 712 | 51523 | Monona | US-IA | |
| Blencoe (Iowa) | 712 | 51523 | Monona | US-IA | |
| Blencoe (Iowa) | 712 | 51523 | Monona | US-IA | |
| Boyden (Iowa) | 712 | 51234 | Sioux | US-IA | |
| Boyden (Iowa) | 712 | 51234 | Sioux | US-IA | |
| Boyden (Iowa) | 712 | 51234 | Sioux | US-IA | |
| Braddyville (Iowa) | 712 | 51631 | Page | US-IA | |
| Braddyville (Iowa) | 712 | 51631 | Page | US-IA | |
| Braddyville (Iowa) | 712 | 51631 | Page | US-IA | |
| Brayton (Iowa) | 712 | 50042 | Audubon | US-IA | |
| Brayton (Iowa) | 712 | 50042 | Audubon | US-IA | |
| Brayton (Iowa) | 712 | 50042 | Audubon | US-IA | |
| Breda (Iowa) | 712 | 51436 | Carroll | US-IA | |
| Breda (Iowa) | 712 | 51436 | Carroll | US-IA | |
| Breda (Iowa) | 712 | 51436 | Carroll | US-IA | |
| Bronson (Iowa) | 712 | 51007 | Woodbury | US-IA | |
| Bronson (Iowa) | 712 | 51007 | Woodbury | US-IA | |
| Bronson (Iowa) | 712 | 51007 | Woodbury | US-IA | |
| Brunsville (Iowa) | 712 | 51008 | Plymouth | US-IA | |
| Brunsville (Iowa) | 712 | 51008 | Plymouth | US-IA | |
| Brunsville (Iowa) | 712 | 51008 | Plymouth | US-IA | |
| Calumet (Iowa) | 712 | 51009 | O'Brien | US-IA | |
| Calumet (Iowa) | 712 | 51009 | O'Brien | US-IA | |
| Calumet (Iowa) | 712 | 51009 | O'Brien | US-IA | |
| Carroll (Iowa) | 712 | 51401 | Carroll | US-IA | |
| Carroll (Iowa) | 712 | 51401 | Carroll | US-IA | |
| Carroll (Iowa) | 712 | 51401 | Carroll | US-IA | |
| Carson (Iowa) | 712 | 51525 | Pottawattamie | US-IA | |
| Carson (Iowa) | 712 | 51525 | Pottawattamie | US-IA | |
| Carson (Iowa) | 712 | 51525 | Pottawattamie | US-IA | |
| Carter Lake (Iowa) | 712 | 51510 | Pottawattamie | US-IA | |
| Carter Lake (Iowa) | 712 | 51510 | Pottawattamie | US-IA | |
| Carter Lake (Iowa) | 712 | 51510 | Pottawattamie | US-IA | |
| Castana (Iowa) | 712 | 51010 | Monona | US-IA | |
| Castana (Iowa) | 712 | 51010 | Monona | US-IA | |
| Castana (Iowa) | 712 | 51010 | Monona | US-IA | |
| Charter Oak (Iowa) | 712 | 51439 | Crawford | US-IA | |
| Charter Oak (Iowa) | 712 | 51439 | Crawford | US-IA | |
| Charter Oak (Iowa) | 712 | 51439 | Crawford | US-IA | |
| Chatsworth (Iowa) | 712 | 51011 | Sioux | US-IA | |
| Chatsworth (Iowa) | 712 | 51011 | Sioux | US-IA | |
| Chatsworth (Iowa) | 712 | 51011 | Sioux | US-IA | |
| Cherokee (Iowa) | 712 | 51012 | Cherokee | US-IA | |
| Cherokee (Iowa) | 712 | 51012 | Cherokee | US-IA | |
| Cherokee (Iowa) | 712 | 51012 | Cherokee | US-IA | |
| Clarinda (Iowa) | 712 | 51632 | Page | US-IA | |
| Clarinda (Iowa) | 712 | 51632 | Page | US-IA | |
| Clarinda (Iowa) | 712 | 51632 | Page | US-IA | |
| Cleghorn (Iowa) | 712 | 51014 | Cherokee | US-IA | |
| Cleghorn (Iowa) | 712 | 51014 | Cherokee | US-IA | |
| Cleghorn (Iowa) | 712 | 51014 | Cherokee | US-IA | |
| Climbing Hill (Iowa) | 712 | 51015 | Woodbury | US-IA | |
| Climbing Hill (Iowa) | 712 | 51015 | Woodbury | US-IA | |
| Climbing Hill (Iowa) | 712 | 51015 | Woodbury | US-IA | |
| Coin (Iowa) | 712 | 51636 | Page | US-IA | |
| Coin (Iowa) | 712 | 51636 | Page | US-IA | |
| Coin (Iowa) | 712 | 51636 | Page | US-IA | |
| College Springs (Iowa) | 712 | 51637 | Page | US-IA | |
| College Springs (Iowa) | 712 | 51637 | Page | US-IA | |
| College Springs (Iowa) | 712 | 51637 | Page | US-IA | |
| Coon Rapids (Iowa) | 712 | 50058 | Carroll | US-IA | |
| Coon Rapids (Iowa) | 712 | 50058 | Carroll | US-IA | |
| Coon Rapids (Iowa) | 712 | 50058 | Carroll | US-IA | |
| Correctionville (Iowa) | 712 | 51016 | Woodbury | US-IA | |
| Correctionville (Iowa) | 712 | 51016 | Woodbury | US-IA | |
| Correctionville (Iowa) | 712 | 51016 | Woodbury | US-IA | |
| Council Bluffs (Iowa) | 712 | 51501 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51502 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51503 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51501 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51502 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51503 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51501 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51502 | Pottawattamie | US-IA | |
| Council Bluffs (Iowa) | 712 | 51503 | Pottawattamie | US-IA | |
| Crescent (Iowa) | 712 | 51526 | Pottawattamie | US-IA | |
| Crescent (Iowa) | 712 | 51526 | Pottawattamie | US-IA | |
| Crescent (Iowa) | 712 | 51526 | Pottawattamie | US-IA | |
| Cumberland (Iowa) | 712 | 50843 | Cass | US-IA | |
| Cumberland (Iowa) | 712 | 50843 | Cass | US-IA | |
| Cumberland (Iowa) | 712 | 50843 | Cass | US-IA | |
| Curlew (Iowa) | 712 | 50527 | Palo Alto | US-IA | |
| Curlew (Iowa) | 712 | 50527 | Palo Alto | US-IA | |
| Curlew (Iowa) | 712 | 50527 | Palo Alto | US-IA | |
| Cushing (Iowa) | 712 | 51018 | Woodbury | US-IA | |
| Cushing (Iowa) | 712 | 51018 | Woodbury | US-IA | |
| Cushing (Iowa) | 712 | 51018 | Woodbury | US-IA | |
| Cylinder (Iowa) | 712 | 50528 | Palo Alto | US-IA | |
| Cylinder (Iowa) | 712 | 50528 | Palo Alto | US-IA | |
| Cylinder (Iowa) | 712 | 50528 | Palo Alto | US-IA | |
| Danbury (Iowa) | 712 | 51019 | Woodbury | US-IA | |
| Danbury (Iowa) | 712 | 51019 | Woodbury | US-IA | |
| Danbury (Iowa) | 712 | 51019 | Woodbury | US-IA | |
| Dedham (Iowa) | 712 | 51440 | Carroll | US-IA | |
| Dedham (Iowa) | 712 | 51440 | Carroll | US-IA | |
| Dedham (Iowa) | 712 | 51440 | Carroll | US-IA | |
| Defiance (Iowa) | 712 | 51527 | Shelby | US-IA | |
| Defiance (Iowa) | 712 | 51527 | Shelby | US-IA | |
| Defiance (Iowa) | 712 | 51527 | Shelby | US-IA | |
| Deloit (Iowa) | 712 | 51441 | Crawford | US-IA | |
| Deloit (Iowa) | 712 | 51441 | Crawford | US-IA | |
| Deloit (Iowa) | 712 | 51441 | Crawford | US-IA | |
| Denison (Iowa) | 712 | 51442 | Crawford | US-IA | |
| Denison (Iowa) | 712 | 51442 | Crawford | US-IA | |
| Denison (Iowa) | 712 | 51442 | Crawford | US-IA | |
| Dickens (Iowa) | 712 | 51333 | Clay | US-IA | |
| Dickens (Iowa) | 712 | 51333 | Clay | US-IA | |
| Dickens (Iowa) | 712 | 51333 | Clay | US-IA | |
| Dolliver (Iowa) | 712 | 50531 | Emmet | US-IA | |
| Dolliver (Iowa) | 712 | 50531 | Emmet | US-IA | |
| Dolliver (Iowa) | 712 | 50531 | Emmet | US-IA | |
| Doon (Iowa) | 712 | 51235 | Lyon | US-IA | |
| Doon (Iowa) | 712 | 51235 | Lyon | US-IA | |
| Doon (Iowa) | 712 | 51235 | Lyon | US-IA | |
| Dow City (Iowa) | 712 | 51528 | Crawford | US-IA | |
| Dow City (Iowa) | 712 | 51528 | Crawford | US-IA | |
| Dow City (Iowa) | 712 | 51528 | Crawford | US-IA | |
| Dunlap (Iowa) | 712 | 51529 | Harrison | US-IA | |
| Dunlap (Iowa) | 712 | 51529 | Harrison | US-IA | |
| Dunlap (Iowa) | 712 | 51529 | Harrison | US-IA | |
| Earling (Iowa) | 712 | 51530 | Shelby | US-IA | |
| Earling (Iowa) | 712 | 51530 | Shelby | US-IA | |
| Earling (Iowa) | 712 | 51530 | Shelby | US-IA | |
| Early (Iowa) | 712 | 50535 | Sac | US-IA | |
| Early (Iowa) | 712 | 50535 | Sac | US-IA | |
| Early (Iowa) | 712 | 50535 | Sac | US-IA | |
| Elk Horn (Iowa) | 712 | 51531 | Shelby | US-IA | |
| Elk Horn (Iowa) | 712 | 51531 | Shelby | US-IA | |
| Elk Horn (Iowa) | 712 | 51531 | Shelby | US-IA | |
| Elliott (Iowa) | 712 | 51532 | Montgomery | US-IA | |
| Elliott (Iowa) | 712 | 51532 | Montgomery | US-IA | |
| Elliott (Iowa) | 712 | 51532 | Montgomery | US-IA | |
| Emerson (Iowa) | 712 | 51533 | Mills | US-IA | |
| Emerson (Iowa) | 712 | 51533 | Mills | US-IA | |
| Emerson (Iowa) | 712 | 51533 | Mills | US-IA | |
| Emmetsburg (Iowa) | 712 | 50536 | Palo Alto | US-IA | |
| Emmetsburg (Iowa) | 712 | 50536 | Palo Alto | US-IA | |
| Emmetsburg (Iowa) | 712 | 50536 | Palo Alto | US-IA | |
| Essex (Iowa) | 712 | 51638 | Page | US-IA | |
| Essex (Iowa) | 712 | 51638 | Page | US-IA | |
| Essex (Iowa) | 712 | 51638 | Page | US-IA | |
| Estherville (Iowa) | 712 | 51334 | Emmet | US-IA | |
| Estherville (Iowa) | 712 | 51334 | Emmet | US-IA | |
| Estherville (Iowa) | 712 | 51334 | Emmet | US-IA | |
| Everly (Iowa) | 712 | 51338 | Clay | US-IA | |
| Everly (Iowa) | 712 | 51338 | Clay | US-IA | |
| Everly (Iowa) | 712 | 51338 | Clay | US-IA | |
| Exira (Iowa) | 712 | 50076 | Audubon | US-IA | |
| Exira (Iowa) | 712 | 50076 | Audubon | US-IA | |
| Exira (Iowa) | 712 | 50076 | Audubon | US-IA | |
| Exira (Iowa) | 712 | 50076 | Audubon | US-IA | |
| Farragut (Iowa) | 712 | 51639 | Fremont | US-IA | |
| Farragut (Iowa) | 712 | 51639 | Fremont | US-IA | |
| Farragut (Iowa) | 712 | 51639 | Fremont | US-IA | |
| Fonda (Iowa) | 712 | 50540 | Pocahontas | US-IA | |
| Fonda (Iowa) | 712 | 50540 | Pocahontas | US-IA | |
| Fonda (Iowa) | 712 | 50540 | Pocahontas | US-IA | |
| Fostoria (Iowa) | 712 | 51340 | Clay | US-IA | |
| Fostoria (Iowa) | 712 | 51340 | Clay | US-IA | |
| Fostoria (Iowa) | 712 | 51340 | Clay | US-IA | |
| Galva (Iowa) | 712 | 51020 | Ida | US-IA | |
| Galva (Iowa) | 712 | 51020 | Ida | US-IA | |
| Galva (Iowa) | 712 | 51020 | Ida | US-IA | |
| George (Iowa) | 712 | 51237 | Lyon | US-IA | |
| George (Iowa) | 712 | 51237 | Lyon | US-IA | |
| George (Iowa) | 712 | 51237 | Lyon | US-IA | |
| Gillett Grove (Iowa) | 712 | 51341 | Clay | US-IA | |
| Gillett Grove (Iowa) | 712 | 51341 | Clay | US-IA | |
| Gillett Grove (Iowa) | 712 | 51341 | Clay | US-IA | |
| Glenwood (Iowa) | 712 | 51534 | Mills | US-IA | |
| Glenwood (Iowa) | 712 | 51534 | Mills | US-IA | |
| Glenwood (Iowa) | 712 | 51534 | Mills | US-IA | |
| Glidden (Iowa) | 712 | 51443 | Carroll | US-IA | |
| Glidden (Iowa) | 712 | 51443 | Carroll | US-IA | |
| Glidden (Iowa) | 712 | 51443 | Carroll | US-IA | |
| Graettinger (Iowa) | 712 | 51342 | Palo Alto | US-IA | |
| Graettinger (Iowa) | 712 | 51342 | Palo Alto | US-IA | |
| Graettinger (Iowa) | 712 | 51342 | Palo Alto | US-IA | |
| Grant (Iowa) | 712 | 50847 | Montgomery | US-IA | |
| Grant (Iowa) | 712 | 50847 | Montgomery | US-IA | |
| Grant (Iowa) | 712 | 50847 | Montgomery | US-IA | |
| Granville (Iowa) | 712 | 51022 | Sioux | US-IA | |
| Granville (Iowa) | 712 | 51022 | Sioux | US-IA | |
| Granville (Iowa) | 712 | 51022 | Sioux | US-IA | |
| Gravity (Iowa) | 712 | 50848 | Taylor | US-IA | |
| Gravity (Iowa) | 712 | 50848 | Taylor | US-IA | |
| Gravity (Iowa) | 712 | 50848 | Taylor | US-IA | |
| Gray (Iowa) | 712 | 50110 | Audubon | US-IA | |
| Gray (Iowa) | 712 | 50110 | Audubon | US-IA | |
| Gray (Iowa) | 712 | 50110 | Audubon | US-IA | |
| Greenville (Iowa) | 712 | 51343 | Clay | US-IA | |
| Greenville (Iowa) | 712 | 51343 | Clay | US-IA | |
| Greenville (Iowa) | 712 | 51343 | Clay | US-IA | |
| Griswold (Iowa) | 712 | 51535 | Cass | US-IA | |
| Griswold (Iowa) | 712 | 51535 | Cass | US-IA | |
| Griswold (Iowa) | 712 | 51535 | Cass | US-IA | |
| Gruver (Iowa) | 712 | 51344 | Emmet | US-IA | |
| Gruver (Iowa) | 712 | 51344 | Emmet | US-IA | |
| Gruver (Iowa) | 712 | 51344 | Emmet | US-IA | |
| Halbur (Iowa) | 712 | 51444 | Carroll | US-IA | |
| Halbur (Iowa) | 712 | 51444 | Carroll | US-IA | |
| Halbur (Iowa) | 712 | 51444 | Carroll | US-IA | |
| Hamburg (Iowa) | 712 | 51640 | Fremont | US-IA | |
| Hamburg (Iowa) | 712 | 51640 | Fremont | US-IA | |
| Hamburg (Iowa) | 712 | 51640 | Fremont | US-IA | |
| Hamlin (Iowa) | 712 | 50117 | Audubon | US-IA | |
| Hamlin (Iowa) | 712 | 50117 | Audubon | US-IA | |
| Hamlin (Iowa) | 712 | 50117 | Audubon | US-IA | |
| Hancock (Iowa) | 712 | 51536 | Pottawattamie | US-IA | |
| Hancock (Iowa) | 712 | 51536 | Pottawattamie | US-IA | |
| Hancock (Iowa) | 712 | 51536 | Pottawattamie | US-IA | |
| Harlan (Iowa) | 712 | 51537 | Shelby | US-IA | |
| Harlan (Iowa) | 712 | 51593 | Shelby | US-IA | |
| Harlan (Iowa) | 712 | 51537 | Shelby | US-IA | |
| Harlan (Iowa) | 712 | 51593 | Shelby | US-IA | |
| Harlan (Iowa) | 712 | 51537 | Shelby | US-IA | |
| Harlan (Iowa) | 712 | 51593 | Shelby | US-IA | |
| Harris (Iowa) | 712 | 51345 | Osceola | US-IA | |
| Harris (Iowa) | 712 | 51345 | Osceola | US-IA | |
| Harris (Iowa) | 712 | 51345 | Osceola | US-IA | |
| Hartley (Iowa) | 712 | 51346 | O'Brien | US-IA | |
| Hartley (Iowa) | 712 | 51346 | O'Brien | US-IA | |
| Hartley (Iowa) | 712 | 51346 | O'Brien | US-IA | |
| Hastings (Iowa) | 712 | 51540 | Mills | US-IA | |
| Hastings (Iowa) | 712 | 51540 | Mills | US-IA | |
| Hastings (Iowa) | 712 | 51540 | Mills | US-IA | |
| Havelock (Iowa) | 712 | 50546 | Pocahontas | US-IA | |
| Havelock (Iowa) | 712 | 50546 | Pocahontas | US-IA | |
| Havelock (Iowa) | 712 | 50546 | Pocahontas | US-IA | |
| Hawarden (Iowa) | 712 | 51023 | Sioux | US-IA | |
| Hawarden (Iowa) | 712 | 51023 | Sioux | US-IA | |
| Hawarden (Iowa) | 712 | 51023 | Sioux | US-IA | |
| Henderson (Iowa) | 712 | 51541 | Mills | US-IA | |
| Henderson (Iowa) | 712 | 51541 | Mills | US-IA | |
| Henderson (Iowa) | 712 | 51541 | Mills | US-IA | |
| Hinton (Iowa) | 712 | 51024 | Plymouth | US-IA | |
| Hinton (Iowa) | 712 | 51024 | Plymouth | US-IA | |
| Hinton (Iowa) | 712 | 51024 | Plymouth | US-IA | |
| Holstein (Iowa) | 712 | 51025 | Ida | US-IA | |
| Holstein (Iowa) | 712 | 51025 | Ida | US-IA | |
| Holstein (Iowa) | 712 | 51025 | Ida | US-IA | |
| Honey Creek (Iowa) | 712 | 51542 | Pottawattamie | US-IA | |
| Honey Creek (Iowa) | 712 | 51542 | Pottawattamie | US-IA | |
| Honey Creek (Iowa) | 712 | 51542 | Pottawattamie | US-IA | |
| Hornick (Iowa) | 712 | 51026 | Woodbury | US-IA | |
| Hornick (Iowa) | 712 | 51026 | Woodbury | US-IA | |
| Hornick (Iowa) | 712 | 51026 | Woodbury | US-IA | |
| Hospers (Iowa) | 712 | 51238 | Sioux | US-IA | |
| Hospers (Iowa) | 712 | 51238 | Sioux | US-IA | |
| Hospers (Iowa) | 712 | 51238 | Sioux | US-IA | |
| Hull (Iowa) | 712 | 51239 | Sioux | US-IA | |
| Hull (Iowa) | 712 | 51239 | Sioux | US-IA | |
| Hull (Iowa) | 712 | 51239 | Sioux | US-IA | |
| Ida Grove (Iowa) | 712 | 51445 | Ida | US-IA | |
| Ida Grove (Iowa) | 712 | 51445 | Ida | US-IA | |
| Ida Grove (Iowa) | 712 | 51445 | Ida | US-IA | |
| Imogene (Iowa) | 712 | 51645 | Fremont | US-IA | |
| Imogene (Iowa) | 712 | 51645 | Fremont | US-IA | |
| Imogene (Iowa) | 712 | 51645 | Fremont | US-IA | |
| Inwood (Iowa) | 712 | 51240 | Lyon | US-IA | |
| Inwood (Iowa) | 712 | 51240 | Lyon | US-IA | |
| Inwood (Iowa) | 712 | 51240 | Lyon | US-IA | |
| Ireton (Iowa) | 712 | 51027 | Sioux | US-IA | |
| Ireton (Iowa) | 712 | 51027 | Sioux | US-IA | |
| Ireton (Iowa) | 712 | 51027 | Sioux | US-IA | |
| Irwin (Iowa) | 712 | 51446 | Shelby | US-IA | |
| Irwin (Iowa) | 712 | 51446 | Shelby | US-IA | |
| Irwin (Iowa) | 712 | 51446 | Shelby | US-IA | |
| Jolley (Iowa) | 712 | 50551 | Calhoun | US-IA | |
| Kimballton (Iowa) | 712 | 51543 | Audubon | US-IA | |
| Kimballton (Iowa) | 712 | 51543 | Audubon | US-IA | |
| Kimballton (Iowa) | 712 | 51543 | Audubon | US-IA | |
| Kingsley (Iowa) | 712 | 51028 | Plymouth | US-IA | |
| Kingsley (Iowa) | 712 | 51028 | Plymouth | US-IA | |
| Kingsley (Iowa) | 712 | 51028 | Plymouth | US-IA | |
| Kirkman (Iowa) | 712 | 51447 | Shelby | US-IA | |
| Kirkman (Iowa) | 712 | 51447 | Shelby | US-IA | |
| Kirkman (Iowa) | 712 | 51447 | Shelby | US-IA | |
| Kiron (Iowa) | 712 | 51448 | Crawford | US-IA | |
| Kiron (Iowa) | 712 | 51448 | Crawford | US-IA | |
| Kiron (Iowa) | 712 | 51448 | Crawford | US-IA | |
| Lake City (Iowa) | 712 | 51449 | Calhoun | US-IA | |
| Lake City (Iowa) | 712 | 51449 | Calhoun | US-IA | |
| Lake City (Iowa) | 712 | 51449 | Calhoun | US-IA | |
| Lake Park (Iowa) | 712 | 51347 | Dickinson | US-IA | |
| Lake Park (Iowa) | 712 | 51347 | Dickinson | US-IA | |
| Lake Park (Iowa) | 712 | 51347 | Dickinson | US-IA | |
| Lake View (Iowa) | 712 | 51450 | Sac | US-IA | |
| Lake View (Iowa) | 712 | 51450 | Sac | US-IA | |
| Lake View (Iowa) | 712 | 51450 | Sac | US-IA | |
| Lanesboro (Iowa) | 712 | 51451 | Carroll | US-IA | |
| Lanesboro (Iowa) | 712 | 51451 | Carroll | US-IA | |
| Lanesboro (Iowa) | 712 | 51451 | Carroll | US-IA | |
| Larchwood (Iowa) | 712 | 51241 | Lyon | US-IA | |
| Larchwood (Iowa) | 712 | 51241 | Lyon | US-IA | |
| Larchwood (Iowa) | 712 | 51241 | Lyon | US-IA | |
| Larrabee (Iowa) | 712 | 51029 | Cherokee | US-IA | |
| Larrabee (Iowa) | 712 | 51029 | Cherokee | US-IA | |
| Larrabee (Iowa) | 712 | 51029 | Cherokee | US-IA | |
| Laurens (Iowa) | 712 | 50554 | Pocahontas | US-IA | |
| Laurens (Iowa) | 712 | 50554 | Pocahontas | US-IA | |
| Laurens (Iowa) | 712 | 50554 | Pocahontas | US-IA | |
| Lawton (Iowa) | 712 | 51030 | Woodbury | US-IA | |
| Lawton (Iowa) | 712 | 51030 | Woodbury | US-IA | |
| Lawton (Iowa) | 712 | 51030 | Woodbury | US-IA | |
| Le Mars (Iowa) | 712 | 51031 | Plymouth | US-IA | |
| Le Mars (Iowa) | 712 | 51031 | Plymouth | US-IA | |
| Le Mars (Iowa) | 712 | 51031 | Plymouth | US-IA | |
| Lester (Iowa) | 712 | 51242 | Lyon | US-IA | |
| Lester (Iowa) | 712 | 51242 | Lyon | US-IA | |
| Lester (Iowa) | 712 | 51242 | Lyon | US-IA | |
| Lewis (Iowa) | 712 | 51544 | Cass | US-IA | |
| Lewis (Iowa) | 712 | 51544 | Cass | US-IA | |
| Lewis (Iowa) | 712 | 51544 | Cass | US-IA | |
| Lidderdale (Iowa) | 712 | 51452 | Carroll | US-IA | |
| Lidderdale (Iowa) | 712 | 51452 | Carroll | US-IA | |
| Lidderdale (Iowa) | 712 | 51452 | Carroll | US-IA | |
| Linn Grove (Iowa) | 712 | 51033 | Buena Vista | US-IA | |
| Linn Grove (Iowa) | 712 | 51033 | Buena Vista | US-IA | |
| Linn Grove (Iowa) | 712 | 51033 | Buena Vista | US-IA | |
| Little Rock (Iowa) | 712 | 51243 | Lyon | US-IA | |
| Little Rock (Iowa) | 712 | 51243 | Lyon | US-IA | |
| Little Rock (Iowa) | 712 | 51243 | Lyon | US-IA | |
| Little Sioux (Iowa) | 712 | 51545 | Harrison | US-IA | |
| Little Sioux (Iowa) | 712 | 51545 | Harrison | US-IA | |
| Little Sioux (Iowa) | 712 | 51545 | Harrison | US-IA | |
| Logan (Iowa) | 712 | 51546 | Harrison | US-IA | |
| Logan (Iowa) | 712 | 51546 | Harrison | US-IA | |
| Logan (Iowa) | 712 | 51546 | Harrison | US-IA | |
| Lohrville (Iowa) | 712 | 51453 | Calhoun | US-IA | |
| Lohrville (Iowa) | 712 | 51453 | Calhoun | US-IA | |
| Lohrville (Iowa) | 712 | 51453 | Calhoun | US-IA | |
| Lytton (Iowa) | 712 | 50561 | Sac | US-IA | |
| Lytton (Iowa) | 712 | 50561 | Sac | US-IA | |
| Lytton (Iowa) | 712 | 50561 | Sac | US-IA | |
| Macedonia (Iowa) | 712 | 51549 | Pottawattamie | US-IA | |
| Macedonia (Iowa) | 712 | 51549 | Pottawattamie | US-IA | |
| Macedonia (Iowa) | 712 | 51549 | Pottawattamie | US-IA | |
| Magnolia (Iowa) | 712 | 51550 | Harrison | US-IA | |
| Magnolia (Iowa) | 712 | 51550 | Harrison | US-IA | |
| Magnolia (Iowa) | 712 | 51550 | Harrison | US-IA | |
| Mallard (Iowa) | 712 | 50562 | Palo Alto | US-IA | |
| Mallard (Iowa) | 712 | 50562 | Palo Alto | US-IA | |
| Mallard (Iowa) | 712 | 50562 | Palo Alto | US-IA | |
| Malvern (Iowa) | 712 | 51551 | Mills | US-IA | |
| Malvern (Iowa) | 712 | 51551 | Mills | US-IA | |
| Malvern (Iowa) | 712 | 51551 | Mills | US-IA | |
| Manilla (Iowa) | 712 | 51454 | Crawford | US-IA | |
| Manilla (Iowa) | 712 | 51454 | Crawford | US-IA | |
| Manilla (Iowa) | 712 | 51454 | Crawford | US-IA | |
| Manning (Iowa) | 712 | 51455 | Carroll | US-IA | |
| Manning (Iowa) | 712 | 51455 | Carroll | US-IA | |
| Manning (Iowa) | 712 | 51455 | Carroll | US-IA | |
| Manson (Iowa) | 712 | 50563 | Calhoun | US-IA | |
| Manson (Iowa) | 712 | 50563 | Calhoun | US-IA | |
| Mapleton (Iowa) | 712 | 51034 | Monona | US-IA | |
| Mapleton (Iowa) | 712 | 51034 | Monona | US-IA | |
| Mapleton (Iowa) | 712 | 51034 | Monona | US-IA | |
| Marathon (Iowa) | 712 | 50565 | Buena Vista | US-IA | |
| Marathon (Iowa) | 712 | 50565 | Buena Vista | US-IA | |
| Marathon (Iowa) | 712 | 50565 | Buena Vista | US-IA | |
| Marcus (Iowa) | 712 | 51035 | Cherokee | US-IA | |
| Marcus (Iowa) | 712 | 51035 | Cherokee | US-IA | |
| Marcus (Iowa) | 712 | 51035 | Cherokee | US-IA | |
| Marne (Iowa) | 712 | 51552 | Cass | US-IA | |
| Marne (Iowa) | 712 | 51552 | Cass | US-IA | |
| Marne (Iowa) | 712 | 51552 | Cass | US-IA | |
| Massena (Iowa) | 712 | 50853 | Cass | US-IA | |
| Massena (Iowa) | 712 | 50853 | Cass | US-IA | |
| Massena (Iowa) | 712 | 50853 | Cass | US-IA | |
| Matlock (Iowa) | 712 | 51244 | Sioux | US-IA | |
| Matlock (Iowa) | 712 | 51244 | Sioux | US-IA | |
| Matlock (Iowa) | 712 | 51244 | Sioux | US-IA | |
| Maurice (Iowa) | 712 | 51036 | Sioux | US-IA | |
| Maurice (Iowa) | 712 | 51036 | Sioux | US-IA | |
| Maurice (Iowa) | 712 | 51036 | Sioux | US-IA | |
| Mc Clelland (Iowa) | 712 | 51548 | Pottawattamie | US-IA | |
| Mc Clelland (Iowa) | 712 | 51548 | Pottawattamie | US-IA | |
| Mc Clelland (Iowa) | 712 | 51548 | Pottawattamie | US-IA | |
| Melvin (Iowa) | 712 | 51350 | Osceola | US-IA | |
| Melvin (Iowa) | 712 | 51350 | Osceola | US-IA | |
| Melvin (Iowa) | 712 | 51350 | Osceola | US-IA | |
| Meriden (Iowa) | 712 | 51037 | Cherokee | US-IA | |
| Meriden (Iowa) | 712 | 51037 | Cherokee | US-IA | |
| Meriden (Iowa) | 712 | 51037 | Cherokee | US-IA | |
| Merrill (Iowa) | 712 | 51038 | Plymouth | US-IA | |
| Merrill (Iowa) | 712 | 51038 | Plymouth | US-IA | |
| Merrill (Iowa) | 712 | 51038 | Plymouth | US-IA | |
| Milford (Iowa) | 712 | 51351 | Dickinson | US-IA | |
| Milford (Iowa) | 712 | 51351 | Dickinson | US-IA | |
| Milford (Iowa) | 712 | 51351 | Dickinson | US-IA | |
| Minden (Iowa) | 712 | 51553 | Pottawattamie | US-IA | |
| Minden (Iowa) | 712 | 51553 | Pottawattamie | US-IA | |
| Minden (Iowa) | 712 | 51553 | Pottawattamie | US-IA | |
| Mineola (Iowa) | 712 | 51554 | Mills | US-IA | |
| Mineola (Iowa) | 712 | 51554 | Mills | US-IA | |
| Mineola (Iowa) | 712 | 51554 | Mills | US-IA | |
| Missouri Valley (Iowa) | 712 | 51555 | Harrison | US-IA | |
| Missouri Valley (Iowa) | 712 | 51555 | Harrison | US-IA | |
| Missouri Valley (Iowa) | 712 | 51555 | Harrison | US-IA | |
| Modale (Iowa) | 712 | 51556 | Harrison | US-IA | |
| Modale (Iowa) | 712 | 51556 | Harrison | US-IA | |
| Modale (Iowa) | 712 | 51556 | Harrison | US-IA | |
| Mondamin (Iowa) | 712 | 51557 | Harrison | US-IA | |
| Mondamin (Iowa) | 712 | 51557 | Harrison | US-IA | |
| Mondamin (Iowa) | 712 | 51557 | Harrison | US-IA | |
| Moorhead (Iowa) | 712 | 51558 | Monona | US-IA | |
| Moorhead (Iowa) | 712 | 51558 | Monona | US-IA | |
| Moorhead (Iowa) | 712 | 51558 | Monona | US-IA | |
| Moville (Iowa) | 712 | 51039 | Woodbury | US-IA | |
| Moville (Iowa) | 712 | 51039 | Woodbury | US-IA | |
| Moville (Iowa) | 712 | 51039 | Woodbury | US-IA | |
| Nemaha (Iowa) | 712 | 50567 | Sac | US-IA | |
| Nemaha (Iowa) | 712 | 50567 | Sac | US-IA | |
| Nemaha (Iowa) | 712 | 50567 | Sac | US-IA | |
| Neola (Iowa) | 712 | 51559 | Pottawattamie | US-IA | |
| Neola (Iowa) | 712 | 51559 | Pottawattamie | US-IA | |
| Neola (Iowa) | 712 | 51559 | Pottawattamie | US-IA | |
| New Market (Iowa) | 712 | 51646 | Taylor | US-IA | |
| New Market (Iowa) | 712 | 51646 | Taylor | US-IA | |
| New Market (Iowa) | 712 | 51646 | Taylor | US-IA | |
| Newell (Iowa) | 712 | 50568 | Buena Vista | US-IA | |
| Newell (Iowa) | 712 | 50568 | Buena Vista | US-IA | |
| Newell (Iowa) | 712 | 50568 | Buena Vista | US-IA | |
| Nodaway (Iowa) | 712 | 50857 | Adams | US-IA | |
| Nodaway (Iowa) | 712 | 50857 | Adams | US-IA | |
| Nodaway (Iowa) | 712 | 50857 | Adams | US-IA | |
| Northboro (Iowa) | 712 | 51647 | Page | US-IA | |
| Northboro (Iowa) | 712 | 51647 | Page | US-IA | |
| Northboro (Iowa) | 712 | 51647 | Page | US-IA | |
| Oakland (Iowa) | 712 | 51560 | Pottawattamie | US-IA | |
| Oakland (Iowa) | 712 | 51560 | Pottawattamie | US-IA | |
| Oakland (Iowa) | 712 | 51560 | Pottawattamie | US-IA | |
| Ocheyedan (Iowa) | 712 | 51354 | Osceola | US-IA | |
| Ocheyedan (Iowa) | 712 | 51354 | Osceola | US-IA | |
| Ocheyedan (Iowa) | 712 | 51354 | Osceola | US-IA | |
| Odebolt (Iowa) | 712 | 51458 | Sac | US-IA | |
| Odebolt (Iowa) | 712 | 51458 | Sac | US-IA | |
| Odebolt (Iowa) | 712 | 51458 | Sac | US-IA | |
| Okoboji (Iowa) | 712 | 51355 | Dickinson | US-IA | |
| Okoboji (Iowa) | 712 | 51355 | Dickinson | US-IA | |
| Okoboji (Iowa) | 712 | 51355 | Dickinson | US-IA | |
| Onawa (Iowa) | 712 | 51040 | Monona | US-IA | |
| Onawa (Iowa) | 712 | 51040 | Monona | US-IA | |
| Onawa (Iowa) | 712 | 51040 | Monona | US-IA | |
| Orange City (Iowa) | 712 | 51041 | Sioux | US-IA | |
| Orange City (Iowa) | 712 | 51041 | Sioux | US-IA | |
| Orange City (Iowa) | 712 | 51041 | Sioux | US-IA | |
| Orange city (Iowa) | 712 | 51041 | Soux | US-IA | |
| Oto (Iowa) | 712 | 51044 | Woodbury | US-IA | |
| Oto (Iowa) | 712 | 51044 | Woodbury | US-IA | |
| Oto (Iowa) | 712 | 51044 | Woodbury | US-IA | |
| Oyens (Iowa) | 712 | 51045 | Plymouth | US-IA | |
| Oyens (Iowa) | 712 | 51045 | Plymouth | US-IA | |
| Oyens (Iowa) | 712 | 51045 | Plymouth | US-IA | |
| Pacific Junction (Iowa) | 712 | 51561 | Mills | US-IA | |
| Pacific Junction (Iowa) | 712 | 51561 | Mills | US-IA | |
| Pacific Junction (Iowa) | 712 | 51561 | Mills | US-IA | |
| Palmer (Iowa) | 712 | 50571 | Pocahontas | US-IA | |
| Palmer (Iowa) | 712 | 50571 | Pocahontas | US-IA | |
| Palmer (Iowa) | 712 | 50571 | Pocahontas | US-IA | |
| Panama (Iowa) | 712 | 51562 | Shelby | US-IA | |
| Panama (Iowa) | 712 | 51562 | Shelby | US-IA | |
| Panama (Iowa) | 712 | 51562 | Shelby | US-IA | |
| Paullina (Iowa) | 712 | 51046 | O'Brien | US-IA | |
| Paullina (Iowa) | 712 | 51046 | O'Brien | US-IA | |
| Paullina (Iowa) | 712 | 51046 | O'Brien | US-IA | |
| Percival (Iowa) | 712 | 51648 | Fremont | US-IA | |
| Percival (Iowa) | 712 | 51648 | Fremont | US-IA | |
| Percival (Iowa) | 712 | 51648 | Fremont | US-IA | |
| Persia (Iowa) | 712 | 51563 | Harrison | US-IA | |
| Persia (Iowa) | 712 | 51563 | Harrison | US-IA | |
| Persia (Iowa) | 712 | 51563 | Harrison | US-IA | |
| Peterson (Iowa) | 712 | 51047 | Clay | US-IA | |
| Peterson (Iowa) | 712 | 51047 | Clay | US-IA | |
| Peterson (Iowa) | 712 | 51047 | Clay | US-IA | |
| Pierson (Iowa) | 712 | 51048 | Woodbury | US-IA | |
| Pierson (Iowa) | 712 | 51048 | Woodbury | US-IA | |
| Pierson (Iowa) | 712 | 51048 | Woodbury | US-IA | |
| Pisgah (Iowa) | 712 | 51564 | Harrison | US-IA | |
| Pisgah (Iowa) | 712 | 51564 | Harrison | US-IA | |
| Pisgah (Iowa) | 712 | 51564 | Harrison | US-IA | |
| Plover (Iowa) | 712 | 50573 | Pocahontas | US-IA | |
| Plover (Iowa) | 712 | 50573 | Pocahontas | US-IA | |
| Plover (Iowa) | 712 | 50573 | Pocahontas | US-IA | |
| Pocahontas (Iowa) | 712 | 50574 | Pocahontas | US-IA | |
| Pocahontas (Iowa) | 712 | 50574 | Pocahontas | US-IA | |
| Pocahontas (Iowa) | 712 | 50574 | Pocahontas | US-IA | |
| Pomeroy (Iowa) | 712 | 50575 | Calhoun | US-IA | |
| Pomeroy (Iowa) | 712 | 50575 | Calhoun | US-IA | |
| Pomeroy (Iowa) | 712 | 50575 | Calhoun | US-IA | |
| Portsmouth (Iowa) | 712 | 51565 | Shelby | US-IA | |
| Portsmouth (Iowa) | 712 | 51565 | Shelby | US-IA | |
| Portsmouth (Iowa) | 712 | 51565 | Shelby | US-IA | |
| Primghar (Iowa) | 712 | 51245 | O'Brien | US-IA | |
| Primghar (Iowa) | 712 | 51245 | O'Brien | US-IA | |
| Primghar (Iowa) | 712 | 51245 | O'Brien | US-IA | |
| Quimby (Iowa) | 712 | 51049 | Cherokee | US-IA | |
| Quimby (Iowa) | 712 | 51049 | Cherokee | US-IA | |
| Quimby (Iowa) | 712 | 51049 | Cherokee | US-IA | |
| Ralston (Iowa) | 712 | 51459 | Carroll | US-IA | |
| Randolph (Iowa) | 712 | 51649 | Fremont | US-IA | |
| Randolph (Iowa) | 712 | 51649 | Fremont | US-IA | |
| Randolph (Iowa) | 712 | 51649 | Fremont | US-IA | |
| Red Oak (Iowa) | 712 | 51566 | Montgomery | US-IA | |
| Red Oak (Iowa) | 712 | 51591 | Montgomery | US-IA | |
| Red Oak (Iowa) | 712 | 51566 | Montgomery | US-IA | |
| Red Oak (Iowa) | 712 | 51591 | Montgomery | US-IA | |
| Red Oak (Iowa) | 712 | 51566 | Montgomery | US-IA | |
| Red Oak (Iowa) | 712 | 51591 | Montgomery | US-IA | |
| Rembrandt (Iowa) | 712 | 50576 | Buena Vista | US-IA | |
| Rembrandt (Iowa) | 712 | 50576 | Buena Vista | US-IA | |
| Rembrandt (Iowa) | 712 | 50576 | Buena Vista | US-IA | |
| Remsen (Iowa) | 712 | 51050 | Plymouth | US-IA | |
| Remsen (Iowa) | 712 | 51050 | Plymouth | US-IA | |
| Remsen (Iowa) | 712 | 51050 | Plymouth | US-IA | |
| Ricketts (Iowa) | 712 | 51460 | Crawford | US-IA | |
| Ricketts (Iowa) | 712 | 51460 | Crawford | US-IA | |
| Ricketts (Iowa) | 712 | 51460 | Crawford | US-IA | |
| Ringsted (Iowa) | 712 | 50578 | Emmet | US-IA | |
| Ringsted (Iowa) | 712 | 50578 | Emmet | US-IA | |
| Ringsted (Iowa) | 712 | 50578 | Emmet | US-IA | |
| Riverton (Iowa) | 712 | 51650 | Fremont | US-IA | |
| Riverton (Iowa) | 712 | 51650 | Fremont | US-IA | |
| Riverton (Iowa) | 712 | 51650 | Fremont | US-IA | |
| Rock Rapids (Iowa) | 712 | 51246 | Lyon | US-IA | |
| Rock Rapids (Iowa) | 712 | 51246 | Lyon | US-IA | |
| Rock Rapids (Iowa) | 712 | 51246 | Lyon | US-IA | |
| Rock Valley (Iowa) | 712 | 51247 | Sioux | US-IA | |
| Rock Valley (Iowa) | 712 | 51247 | Sioux | US-IA | |
| Rock Valley (Iowa) | 712 | 51247 | Sioux | US-IA | |
| Rockwell City (Iowa) | 712 | 50579 | Calhoun | US-IA | |
| Rockwell City (Iowa) | 712 | 50579 | Calhoun | US-IA | |
| Rockwell City (Iowa) | 712 | 50579 | Calhoun | US-IA | |
| Rodney (Iowa) | 712 | 51051 | Monona | US-IA | |
| Rodney (Iowa) | 712 | 51051 | Monona | US-IA | |
| Rodney (Iowa) | 712 | 51051 | Monona | US-IA | |
| Rolfe (Iowa) | 712 | 50581 | Pocahontas | US-IA | |
| Rolfe (Iowa) | 712 | 50581 | Pocahontas | US-IA | |
| Rolfe (Iowa) | 712 | 50581 | Pocahontas | US-IA | |
| Royal (Iowa) | 712 | 51357 | Clay | US-IA | |
| Royal (Iowa) | 712 | 51357 | Clay | US-IA | |
| Royal (Iowa) | 712 | 51357 | Clay | US-IA | |
| Ruthven (Iowa) | 712 | 51358 | Palo Alto | US-IA | |
| Ruthven (Iowa) | 712 | 51358 | Palo Alto | US-IA | |
| Ruthven (Iowa) | 712 | 51358 | Palo Alto | US-IA | |
| Sac City (Iowa) | 712 | 50583 | Sac | US-IA | |
| Sac City (Iowa) | 712 | 50583 | Sac | US-IA | |
| Sac City (Iowa) | 712 | 50583 | Sac | US-IA | |
| Salix (Iowa) | 712 | 51052 | Woodbury | US-IA | |
| Salix (Iowa) | 712 | 51052 | Woodbury | US-IA | |
| Salix (Iowa) | 712 | 51052 | Woodbury | US-IA | |
| Sanborn (Iowa) | 712 | 51248 | O'Brien | US-IA | |
| Sanborn (Iowa) | 712 | 51248 | O'Brien | US-IA | |
| Sanborn (Iowa) | 712 | 51248 | O'Brien | US-IA | |
| Schaller (Iowa) | 712 | 51053 | Sac | US-IA | |
| Schaller (Iowa) | 712 | 51053 | Sac | US-IA | |
| Schaller (Iowa) | 712 | 51053 | Sac | US-IA | |
| Schleswig (Iowa) | 712 | 51461 | Crawford | US-IA | |
| Schleswig (Iowa) | 712 | 51461 | Crawford | US-IA | |
| Schleswig (Iowa) | 712 | 51461 | Crawford | US-IA | |
| Scranton (Iowa) | 712 | 51462 | Greene | US-IA | |
| Scranton (Iowa) | 712 | 51462 | Greene | US-IA | |
| Scranton (Iowa) | 712 | 51462 | Greene | US-IA | |
| Sergeant Bluff (Iowa) | 712 | 51054 | Woodbury | US-IA | |
| Sergeant Bluff (Iowa) | 712 | 51054 | Woodbury | US-IA | |
| Sergeant Bluff (Iowa) | 712 | 51054 | Woodbury | US-IA | |
| Shambaugh (Iowa) | 712 | 51651 | Page | US-IA | |
| Shambaugh (Iowa) | 712 | 51651 | Page | US-IA | |
| Shambaugh (Iowa) | 712 | 51651 | Page | US-IA | |
| Shelby (Iowa) | 712 | 51570 | Shelby | US-IA | |
| Shelby (Iowa) | 712 | 51570 | Shelby | US-IA | |
| Shelby (Iowa) | 712 | 51570 | Shelby | US-IA | |
| Sheldon (Iowa) | 712 | 51201 | O'Brien | US-IA | |
| Sheldon (Iowa) | 712 | 51201 | O'Brien | US-IA | |
| Sheldon (Iowa) | 712 | 51201 | O'Brien | US-IA | |
| Shenandoah (Iowa) | 712 | 51601 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51602 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51603 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51601 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51602 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51603 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51601 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51602 | Page | US-IA | |
| Shenandoah (Iowa) | 712 | 51603 | Page | US-IA | |
| Sibley (Iowa) | 712 | 51249 | Osceola | US-IA | |
| Sibley (Iowa) | 712 | 51249 | Osceola | US-IA | |
| Sibley (Iowa) | 712 | 51249 | Osceola | US-IA | |
| Sidney (Iowa) | 712 | 51652 | Fremont | US-IA | |
| Sidney (Iowa) | 712 | 51652 | Fremont | US-IA | |
| Sidney (Iowa) | 712 | 51652 | Fremont | US-IA | |
| Silver City (Iowa) | 712 | 51571 | Mills | US-IA | |
| Silver City (Iowa) | 712 | 51571 | Mills | US-IA | |
| Silver City (Iowa) | 712 | 51571 | Mills | US-IA | |
| Sioux Center (Iowa) | 712 | 51250 | Sioux | US-IA | |
| Sioux Center (Iowa) | 712 | 51250 | Sioux | US-IA | |
| Sioux Center (Iowa) | 712 | 51250 | Sioux | US-IA | |
| Sioux City (Iowa) | 712 | 51101 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51102 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51103 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51104 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51105 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51106 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51108 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51109 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51111 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51101 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51102 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51103 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51104 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51105 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51106 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51108 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51109 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51111 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51101 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51102 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51103 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51104 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51105 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51106 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51108 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51109 | Woodbury | US-IA | |
| Sioux City (Iowa) | 712 | 51111 | Woodbury | US-IA | |
| Sioux Rapids (Iowa) | 712 | 50585 | Buena Vista | US-IA | |
| Sioux Rapids (Iowa) | 712 | 50585 | Buena Vista | US-IA | |
| Sioux Rapids (Iowa) | 712 | 50585 | Buena Vista | US-IA | |
| Sloan (Iowa) | 712 | 51055 | Woodbury | US-IA | |
| Sloan (Iowa) | 712 | 51055 | Woodbury | US-IA | |
| Sloan (Iowa) | 712 | 51055 | Woodbury | US-IA | |
| Smithland (Iowa) | 712 | 51056 | Woodbury | US-IA | |
| Smithland (Iowa) | 712 | 51056 | Woodbury | US-IA | |
| Smithland (Iowa) | 712 | 51056 | Woodbury | US-IA | |
| Soldier (Iowa) | 712 | 51572 | Monona | US-IA | |
| Soldier (Iowa) | 712 | 51572 | Monona | US-IA | |
| Soldier (Iowa) | 712 | 51572 | Monona | US-IA | |
| Spencer (Iowa) | 712 | 51301 | Clay | US-IA | |
| Spencer (Iowa) | 712 | 51301 | Clay | US-IA | |
| Spencer (Iowa) | 712 | 51301 | Clay | US-IA | |
| Spirit Lake (Iowa) | 712 | 51360 | Dickinson | US-IA | |
| Spirit Lake (Iowa) | 712 | 51360 | Dickinson | US-IA | |
| Spirit Lake (Iowa) | 712 | 51360 | Dickinson | US-IA | |
| Stanton (Iowa) | 712 | 51573 | Montgomery | US-IA | |
| Stanton (Iowa) | 712 | 51573 | Montgomery | US-IA | |
| Stanton (Iowa) | 712 | 51573 | Montgomery | US-IA | |
| Storm Lake (Iowa) | 712 | 50588 | Buena Vista | US-IA | |
| Storm Lake (Iowa) | 712 | 50588 | Buena Vista | US-IA | |
| Storm Lake (Iowa) | 712 | 50588 | Buena Vista | US-IA | |
| Superior (Iowa) | 712 | 51363 | Dickinson | US-IA | |
| Superior (Iowa) | 712 | 51363 | Dickinson | US-IA | |
| Superior (Iowa) | 712 | 51363 | Dickinson | US-IA | |
| Sutherland (Iowa) | 712 | 51058 | O'Brien | US-IA | |
| Sutherland (Iowa) | 712 | 51058 | O'Brien | US-IA | |
| Sutherland (Iowa) | 712 | 51058 | O'Brien | US-IA | |
| Tabor (Iowa) | 712 | 51653 | Fremont | US-IA | |
| Tabor (Iowa) | 712 | 51653 | Fremont | US-IA | |
| Tabor (Iowa) | 712 | 51653 | Fremont | US-IA | |
| Templeton (Iowa) | 712 | 51463 | Carroll | US-IA | |
| Templeton (Iowa) | 712 | 51463 | Carroll | US-IA | |
| Templeton (Iowa) | 712 | 51463 | Carroll | US-IA | |
| Terril (Iowa) | 712 | 51364 | Dickinson | US-IA | |
| Terril (Iowa) | 712 | 51364 | Dickinson | US-IA | |
| Terril (Iowa) | 712 | 51364 | Dickinson | US-IA | |
| Thurman (Iowa) | 712 | 51654 | Fremont | US-IA | |
| Thurman (Iowa) | 712 | 51654 | Fremont | US-IA | |
| Thurman (Iowa) | 712 | 51654 | Fremont | US-IA | |
| Treynor (Iowa) | 712 | 51575 | Pottawattamie | US-IA | |
| Treynor (Iowa) | 712 | 51575 | Pottawattamie | US-IA | |
| Treynor (Iowa) | 712 | 51575 | Pottawattamie | US-IA | |
| Truesdale (Iowa) | 712 | 50592 | Buena Vista | US-IA | |
| Truesdale (Iowa) | 712 | 50592 | Buena Vista | US-IA | |
| Truesdale (Iowa) | 712 | 50592 | Buena Vista | US-IA | |
| Underwood (Iowa) | 712 | 51576 | Pottawattamie | US-IA | |
| Underwood (Iowa) | 712 | 51576 | Pottawattamie | US-IA | |
| Underwood (Iowa) | 712 | 51576 | Pottawattamie | US-IA | |
| Ute (Iowa) | 712 | 51060 | Monona | US-IA | |
| Ute (Iowa) | 712 | 51060 | Monona | US-IA | |
| Ute (Iowa) | 712 | 51060 | Monona | US-IA | |
| Vail (Iowa) | 712 | 51465 | Crawford | US-IA | |
| Vail (Iowa) | 712 | 51465 | Crawford | US-IA | |
| Vail (Iowa) | 712 | 51465 | Crawford | US-IA | |
| Varina (Iowa) | 712 | 50593 | Pocahontas | US-IA | |
| Varina (Iowa) | 712 | 50593 | Pocahontas | US-IA | |
| Varina (Iowa) | 712 | 50593 | Pocahontas | US-IA | |
| Villisca (Iowa) | 712 | 50864 | Montgomery | US-IA | |
| Villisca (Iowa) | 712 | 50864 | Montgomery | US-IA | |
| Villisca (Iowa) | 712 | 50864 | Montgomery | US-IA | |
| Wall Lake (Iowa) | 712 | 51466 | Sac | US-IA | |
| Wall Lake (Iowa) | 712 | 51466 | Sac | US-IA | |
| Wall Lake (Iowa) | 712 | 51466 | Sac | US-IA | |
| Wallingford (Iowa) | 712 | 51365 | Emmet | US-IA | |
| Wallingford (Iowa) | 712 | 51365 | Emmet | US-IA | |
| Wallingford (Iowa) | 712 | 51365 | Emmet | US-IA | |
| Walnut (Iowa) | 712 | 51577 | Pottawattamie | US-IA | |
| Walnut (Iowa) | 712 | 51577 | Pottawattamie | US-IA | |
| Walnut (Iowa) | 712 | 51577 | Pottawattamie | US-IA | |
| Washta (Iowa) | 712 | 51061 | Cherokee | US-IA | |
| Washta (Iowa) | 712 | 51061 | Cherokee | US-IA | |
| Washta (Iowa) | 712 | 51061 | Cherokee | US-IA | |
| Webb (Iowa) | 712 | 51366 | Clay | US-IA | |
| Webb (Iowa) | 712 | 51366 | Clay | US-IA | |
| Webb (Iowa) | 712 | 51366 | Clay | US-IA | |
| Westfield (Iowa) | 712 | 51062 | Plymouth | US-IA | |
| Westfield (Iowa) | 712 | 51062 | Plymouth | US-IA | |
| Westfield (Iowa) | 712 | 51062 | Plymouth | US-IA | |
| Westphalia (Iowa) | 712 | 51578 | Shelby | US-IA | |
| Westphalia (Iowa) | 712 | 51578 | Shelby | US-IA | |
| Westphalia (Iowa) | 712 | 51578 | Shelby | US-IA | |
| Westside (Iowa) | 712 | 51467 | Crawford | US-IA | |
| Westside (Iowa) | 712 | 51467 | Crawford | US-IA | |
| Westside (Iowa) | 712 | 51467 | Crawford | US-IA | |
| Whiting (Iowa) | 712 | 51063 | Monona | US-IA | |
| Whiting (Iowa) | 712 | 51063 | Monona | US-IA | |
| Whiting (Iowa) | 712 | 51063 | Monona | US-IA | |
| Wiota (Iowa) | 712 | 50274 | Cass | US-IA | |
| Wiota (Iowa) | 712 | 50274 | Cass | US-IA | |
| Wiota (Iowa) | 712 | 50274 | Cass | US-IA | |
| Woodbine (Iowa) | 712 | 51579 | Harrison | US-IA | |
| Woodbine (Iowa) | 712 | 51579 | Harrison | US-IA | |
| Woodbine (Iowa) | 712 | 51579 | Harrison | US-IA | |
| Yorktown (Iowa) | 712 | 51656 | Page | US-IA | |
| Yorktown (Iowa) | 712 | 51656 | Page | US-IA | |
| Yorktown (Iowa) | 712 | 51656 | Page | US-IA |