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.

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Connecticut ZIP Codes

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

State ZIP Code City County Area Codes
CT 06784 Sherman Fairfield County 203, 475, 845, 860, 959
CT 06785 South Kent Litchfield County 860, 959
CT 06786 Terryville Litchfield County 203, 475, 860, 959
CT 06787 Thomaston Litchfield County 203, 475, 860, 959
CT 06790 Torrington Litchfield County 860, 959
CT 06791 Harwinton Litchfield County 860, 959
CT 06792 Torrington Litchfield County 860, 959
CT 06793 Washington Litchfield County 203, 475, 860, 959
CT 06794 Washington Depot Litchfield County 860, 959
CT 06795 Watertown Litchfield County 203, 475, 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.