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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Suffolk County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Suffolk County.

County State ZIP Code City Area Codes
Suffolk County MA 02150 Chelsea 339, 617, 781, 857
Suffolk County MA 02151 Revere 339, 617, 781, 857
Suffolk County MA 02152 Winthrop 339, 617, 781, 857
Suffolk County MA 02163 Boston 617, 857
Suffolk County MA 02196 Boston 617
Suffolk County MA 02199 Boston 617, 857
Suffolk County MA 02201 Boston 617
Suffolk County MA 02203 Boston 617, 857
Suffolk County MA 02204 Boston 617
Suffolk County MA 02205 Boston 617, 857
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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.