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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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Denver County ZIP Codes

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

County State ZIP Code City Area Codes
Denver County CO 80201 Denver 303
Denver County CO 80202 Denver 303, 720, 983
Denver County CO 80203 Denver 303, 720, 983
Denver County CO 80204 Denver 303, 720, 983
Denver County CO 80205 Denver 303, 720, 983
Denver County CO 80206 Denver 303, 720, 983
Denver County CO 80207 Denver 303, 720, 983
Denver County CO 80208 Denver 303
Denver County CO 80209 Denver 303, 720, 983
Denver County CO 80210 Denver 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.