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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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Arapahoe County ZIP Codes

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

County State ZIP Code City Area Codes
Arapahoe County CO 80041 Aurora 303
Arapahoe County CO 80042 Aurora 303
Arapahoe County CO 80044 Aurora 303
Arapahoe County CO 80046 Aurora 303
Arapahoe County CO 80047 Aurora 303
Arapahoe County CO 80103 Byers 303, 719, 720, 970, 983
Arapahoe County CO 80105 Deer Trail 303, 719, 720, 970, 983
Arapahoe County CO 80110 Englewood 303, 720, 983
Arapahoe County CO 80111 Englewood 303, 720, 983
Arapahoe County CO 80112 Englewood 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.