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 06382 Uncasville New London County 860, 959
CT 06383 Versailles New London County 860
CT 06384 Voluntown New London County 401, 860, 959
CT 06385 Waterford New London County 860, 959
CT 06386 Waterford New London County 860
CT 06387 Wauregan Windham County 860, 959
CT 06388 West Mystic New London County 860
CT 06389 Yantic New London County 860, 959
CT 06401 Ansonia New Haven County 203, 475
CT 06403 Beacon Falls New Haven County 203, 475
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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.