Area code 712 is the telephone numbering plan code for the Western fifth of Iowa, including cities such as Spencer, Le Mars, Sioux City, Council Bluffs, Sheldon, Storm Lake, Carroll and Sac City.
| Iowa area codes: 319, 515, 563, 641, 712 | ||
|---|---|---|
| North: 507 | ||
| West: 402,531 531, 605 | area code 712 | East: 515, 641 |
| South: 660 | ||
| Minnesota area codes: 218, 320, 507, 612, 651, 763, 952 | ||
| Missouri area codes: 314, 417, 573, 636, 660, 816 | ||
| Nebraska area codes: 308, 402 | ||
| South Dakota area codes: 605 | ||
