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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Fergus County ZIP Codes

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

County State ZIP Code City Area Codes
Fergus County MT 59032 Grass Range 406
Fergus County MT 59424 Coffee Creek 406
Fergus County MT 59430 Denton 406
Fergus County MT 59441 Forest Grove 406
Fergus County MT 59451 Hilger 406
Fergus County MT 59457 Lewistown 406
Fergus County MT 59464 Moore 406
Fergus County MT 59471 Roy 406
Fergus County MT 59489 Winifred 406

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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.