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 06331 Canterbury Windham County 860, 959
CT 06332 Central Village Windham County 860, 959
CT 06333 East Lyme New London County 860, 959
CT 06334 Bozrah New London County 860, 959
CT 06335 Gales Ferry New London County 860, 959
CT 06336 Gilman New London County 860, 959
CT 06338 Mashantucket New London County 860, 959
CT 06339 Ledyard New London County 860, 959
CT 06340 Groton New London County 860, 959
CT 06349 Groton New London 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.