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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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Larimer County ZIP Codes

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

County State ZIP Code City Area Codes
Larimer County CO 80511 Estes Park 970
Larimer County CO 80512 Bellvue 970
Larimer County CO 80513 Berthoud 303, 720, 970, 983
Larimer County CO 80515 Drake 970
Larimer County CO 80517 Estes Park 303, 720, 970, 983
Larimer County CO 80521 Fort Collins 970
Larimer County CO 80522 Fort Collins 970
Larimer County CO 80523 Fort Collins 970
Larimer County CO 80524 Fort Collins 970
Larimer County CO 80525 Fort Collins 970
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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.