Fremont County, Idaho
6 ZIP codes · 1,863.96 sq mi of land · FIPS 16043
| Population | 13,943 |
|---|---|
| State | Idaho |
| FIPS code | 16043 |
| Time zone | Mountain |
| Land area | 1,863.96 sq mi |
| Center (lat, long) | 44.2181, -111.4844 |
Area codes in this area
These are the area codes that most often serve Fremont County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
AshtonChesterIsland ParkMacks InnParkerSaint Anthony
ZIP codes in Fremont County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.