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
Maps and coordinates
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 80013 Aurora Arapahoe County 303, 720, 983
CO 80014 Aurora Arapahoe County 303, 720, 983
CO 80015 Aurora Arapahoe County 303, 720, 983
CO 80016 Aurora Arapahoe County 303, 720, 983
CO 80017 Aurora Arapahoe County 303, 720, 983
CO 80018 Aurora Arapahoe County 303, 720, 983
CO 80019 Aurora Adams County 303, 720, 983
CO 80020 Broomfield Broomfield County 303, 720, 983
CO 80021 Broomfield Jefferson County 303, 720, 983
CO 80022 Commerce City Adams County 303, 720, 983
Page 2 of 67

Geographic Map of Colorado

Postal context

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.