| District of Iowa area codes: 712 | |
|---|---|
| Country | United States |
| State/Province | Iowa |
| Major City | Sioux City |
| Time Zone | Central (UTC-06:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 712-928 | Obrien | Hartley, IA | Community Cable Tv Agcy O'brien Co. DBA Comm.-ia |
| 712-930 | Obrien | Sanborn, IA | Community Cable Tv Agcy O'brien Co. DBA Comm.-ia |
| 712-933 | Clay | Royal, IA | Royal Telephone Co. |
| 712-934 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-938 | Plymouth | Merrill, IA | Qwest Corporation |
| 712-939 | Montgomery | Villisca, IA | Mcc Telephony Of Iowa |
| 712-941 | Woodbury | Sergeant Bluff, IA | Level 3 Communications |
| 712-942 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-943 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-944 | Woodbury | Lawton, IA | Western Iowa Telephone Association |
| 712-945 | Woodbury | Salix, IA | Fibercom, L.c. |
| 712-946 | Woodbury | Salix, IA | Northwest Iowa Telephone |
| 712-947 | Plymouth | Hinton, IA | Northern Iowa Telephone Co. |
| 712-948 | Woodbury | Bronson, IA | Western Iowa Telephone Association |
| 712-949 | Obrien | Paullina, IA | Community Cable Tv Agcy O'brien Co. DBA Comm.-ia |
| 712-957 | Obrien | Primghar, IA | Community Cable Tv Agcy O'brien Co. DBA Comm.-ia |
| 712-963 | Lyon | Little Rock, IA | Frontier Communications Of Minnesota |
| 712-964 | Lyon | Larchwood, IA | Alliance Communications Cooperative |
| 712-973 | Fremont | Percival, IA | Windstream Nebraska |
| 712-975 | Sac | Schaller, IA | Long Lines Wireless |
There are 484 prefixes, In the code area, the major cities are Council Bluffs, IA;Sioux City, IA. The major city is Sioux City.