There are 11 zip codes in Martin County, Minnesota. The most populated is 56031, located in Fairmont. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5603111,861Fairmont
560882,062Truman
561711,612Sherburn
561811,187Welcome
56176999Trimont
56039932Granada
56121598Ceylon
56127539Dunnell
56162248Ormsby
56160233Odin
56075137Northrop

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