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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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Rosebud County ZIP Codes

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

County State ZIP Code City Area Codes
Rosebud County MT 59003 Ashland 406
Rosebud County MT 59004 Ashland 406
Rosebud County MT 59012 Birney 406
Rosebud County MT 59039 Ingomar 406
Rosebud County MT 59043 Lame Deer 406
Rosebud County MT 59083 Sumatra 406
Rosebud County MT 59323 Colstrip 406
Rosebud County MT 59327 Forsyth 406
Rosebud County MT 59333 Hathaway 406
Rosebud County MT 59347 Rosebud 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.