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

Connecticut ZIP Codes

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

State ZIP Code City County Area Codes
CT 06132 Hartford Hartford County 860
CT 06133 West Hartford Hartford County 860
CT 06134 Hartford Hartford County 860
CT 06137 West Hartford Hartford County 860
CT 06138 East Hartford Hartford County 860
CT 06140 Hartford Hartford County 860
CT 06141 Hartford Hartford County 860
CT 06142 Hartford Hartford County 860
CT 06143 Hartford Hartford County 860
CT 06144 Hartford Hartford County 860
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Geographic Map of Connecticut

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.