U.S. postal lookup

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.

42,735 verified records
All states and U.S. territories
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State directory

Colorado ZIP Codes

Complete postal directory, details, and geographic map for the State of Colorado.

State ZIP Code City County Area Codes
CO 81019 Colorado City Pueblo County 719
CO 81020 Aguilar Las Animas County 719
CO 81021 Arlington Kiowa County 719
CO 81022 Avondale Pueblo County 719
CO 81023 Beulah Pueblo County 719
CO 81024 Boncarbo Las Animas County 719
CO 81025 Boone Pueblo County 719
CO 81027 Branson Las Animas County 575, 719
CO 81029 Campo Baca County 303, 580, 620, 719, 720, 983
CO 81030 Cheraw Otero County 719
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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.