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U.S. ZIP Codes Database 2026

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Otter Tail County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Otter Tail County.

County State ZIP Code City Area Codes
Otter Tail County MN 56538 Fergus Falls 218
Otter Tail County MN 56551 Henning 218
Otter Tail County MN 56567 New York Mills 218
Otter Tail County MN 56571 Ottertail 218
Otter Tail County MN 56572 Pelican Rapids 218
Otter Tail County MN 56573 Perham 218
Otter Tail County MN 56576 Richville 218
Otter Tail County MN 56586 Underwood 218
Otter Tail County MN 56587 Vergas 218
Otter Tail County MN 56588 Vining 218
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.