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 06350 Hanover New London County 860, 959
CT 06351 Jewett City New London County 860, 959
CT 06353 Montville New London County 860, 959
CT 06354 Moosup Windham County 401, 860, 959
CT 06355 Mystic New London County 860, 959
CT 06357 Niantic New London County 860, 959
CT 06359 North Stonington New London County 401, 860, 959
CT 06360 Norwich New London County 860, 959
CT 06365 Preston New London County 860, 959
CT 06370 Oakdale New London County 860, 959
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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.