There are 3 zip codes in Fallon County, Montana. The most populated is 59313, located in Baker. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
593132,284Baker
59344525Plevna
59354214Willard
showing: 3 rows

Zip Codes in Fallon County, Montana by Population (2024)