There are 5 zip codes in Custer County, Idaho. The most populated is 83226, located in Challis. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
832262,296Challis
832511,286Mackay
83278372Stanley
83235124Ellis
8322770Clayton
showing: 5 rows

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