| Area Code | 712 |
| State | Iowa |
| Current Time in Area Code 712 | 712> CST |
| Timezone | Central Standard Time |
| Regional Market Area | Des Moines-Ames Area Omaha Area Sioux City Area Sioux Falls Area |
| Metro Area(s) | Carroll, IA Sioux City, IA-NE-SD Spencer, IA Spirit Lake, IA Storm Lake, IA |
| Population (2020) | 555953 |
| Adjacent Area Codes | 402,507,515,531,605,641,660 |
| Council Bluffs |
| Sioux City |