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
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State directory

Connecticut ZIP Codes

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

State ZIP Code City County Area Codes
CT 06021 Colebrook Litchfield County 413, 860, 959
CT 06022 Collinsville Hartford County 860, 959
CT 06023 East Berlin Hartford County 860, 959
CT 06024 East Canaan Litchfield County 860, 959
CT 06025 East Glastonbury Hartford County 860
CT 06026 East Granby Hartford County 860, 959
CT 06027 East Hartland Hartford County 413, 860, 959
CT 06028 East Windsor Hill Hartford County 860
CT 06029 Ellington Tolland County 860, 959
CT 06030 Farmington Hartford County 860
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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.