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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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Gilpin County ZIP Codes

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

County State ZIP Code City Area Codes
Gilpin County CO 80422 Black Hawk 303, 720, 970, 983
Gilpin County CO 80427 Central City 303, 720, 983
Gilpin County CO 80474 Rollinsville 303, 720, 983

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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.