Where Is Area Code 712?
Area code 712 is found in the US state of Iowa. Primarily servicing the city of Sioux City (population: 86001), area code 712 covers 32 counties of Iowa.
Located in the Central time zone, area code 712 is on the same time as Chicago, IL.
Area code 712 was brought into effect on January 1, 1947.
Counties in Area Code 712
- Audubon,
- Buena Vista,
- Calhoun,
- Carroll,
- Cass,
- Cherokee,
- Clay,
- Crawford,
- Dickinson,
- Emmet,
- Fremont,
- Harrison,
- Ida,
- Lyon,
- Mills,
- Monona,
- Montgomery,
- Obrien,
- Osceola,
- Page,
- Palo Alto,
- Plymouth,
- Pocahontas,
- Pottawattamie,
- Sac,
- Shelby,
- Sioux,
- Taylor,
- Woodbury.
Most Populous Cities in Area Code 712
| City | County | City Population | Time Zone |
|---|---|---|---|
| Sioux City | Woodbury | 86,001 | CST |
| Council Bluffs | Pottawattamie | 71,725 | CST |
| Storm Lake | Buena Vista | 12,965 | CST |
| Spencer | Clay | 12,639 | CST |
| Le Mars | Plymouth | 12,296 | CST |
| Carroll | Carroll | 12,263 | CST |
| Denison | Crawford | 9,960 | CST |
| Glenwood | Mills | 9,099 | CST |
| Sioux Center | Sioux | 8,387 | CST |
| Atlantic | Cass | 8,351 | CST |
| Spirit Lake | Dickinson | 8,176 | CST |
| Estherville | Emmet | 7,529 | CST |
| Clarinda | Page | 7,196 | CST |
| Orange City | Sioux | 7,092 | CST |
| Red Oak | Montgomery | 6,921 | CST |
| Harlan | Shelby | 6,649 | CST |
| Cherokee | Cherokee | 6,572 | CST |
| Sheldon | Obrien | 6,118 | CST |
| Shenandoah | Page | 5,935 | CST |
| Missouri Valley | Harrison | 5,118 | CST |
| Sergeant Bluff | Woodbury | 5,117 | CST |
| Rock Valley | Sioux | 4,951 | CST |
| Emmetsburg | Palo Alto | 4,470 | CST |
| Milford | Dickinson | 4,444 | CST |
| Rock Rapids | Lyon | 3,902 | CST |
Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.
View all United States Area Codes.
This page was last updated on July 3, 2015.