| 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 |
|---|---|---|---|
| 712-227 | Pottawattamie | Crescent, IA | Cox Iowa Telcom. LLC |
| 712-228 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-229 | Cherokee | Cherokee, IA | Cellco Partnership DBA Verizon Wireless |
| 712-230 | Sioux | Hospers, IA | New Cingular Wireless PCS - IL |
| 712-231 | Sioux | Hospers, IA | New Cingular Wireless PCS - IL |
| 712-232 | Clay | Spencer, IA | Alliance Connect |
| 712-233 | Woodbury | Sioux City, IA | Qwest Corporation |
| 712-234 | Woodbury | Sioux City, IA | Qwest Corporation |
| 712-235 | Shelby | Harlan, IA | Farmers Mutual Cooperative Telephone Company-ia |
| 712-236 | Shelby | Harlan, IA | Farmers Mutual Cooperative Telephone Company |
| 712-237 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-238 | Woodbury | Sioux City, IA | Long Lines Metro - SD |
| 712-239 | Woodbury | Sioux City, IA | Qwest Corporation |
| 712-240 | Clay | Spencer, IA | United States Cellular Corp. - Iowa |
| 712-242 | Pottawattamie | Carter Lake, IA | Windstream Communications Of The Midewest Inc - NE |
| 712-243 | Cass | Atlantic, IA | Qwest Corporation |
| 712-244 | Woodbury | Sioux City, IA | Long Lines Metro - SD |
| 712-246 | Page | Shenandoah, IA | Qwest Corporation |
| 712-247 | Woodbury | Sergeant Bluff, IA | Northwest Iowa Telephone |
| 712-248 | Pottawattamie | Carter Lake, IA | Mcleodusa Telecommunications Services- Ia |
There are 484 prefixes, In the code area, the major cities are Council Bluffs, IA;Sioux City, IA. The major city is Sioux City.