There are 20 zip codes in Otter Tail County, Minnesota. The most populated is 56537, located in Fergus Falls. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5653719,870Fergus Falls
565736,733Perham
565725,854Pelican Rapids
565673,163New York Mills
565152,799Battle Lake
563612,650Parkers Prairie
565512,191Henning
565861,808Underwood
565281,721Dent
565711,716Ottertail
565341,284Erhard
565871,203Vergas
563241,072Dalton
56527895Deer Creek
56576860Richville
56453818Hewitt
56524706Clitherall
56588461Vining
56518402Bluffton
56533282Elizabeth

Zip Codes in Otter Tail County, Minnesota by Population (2024)