There are 8 zip codes in Fremont County, Idaho. The most populated is 83445, located in Saint Anthony. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
834457,213Saint Anthony
834202,737Ashton
834511,038Teton
83436860Newdale
83429643Island Park
83421379Chester
83438373Parker
8343329Macks Inn
showing: 8 rows

Zip Codes in Fremont County, Idaho by Population (2024)