There are 5 zip codes in Mahnomen County, Minnesota. The most populated is 56557, located in Mahnomen. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
565572,863Mahnomen
565891,819Waubun
56651618Lengby
56566613Naytahwaush
56516320Bejou

Zip Codes in Mahnomen County, Minnesota by Population (2024)