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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King County ZIP Codes

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

County State ZIP Code City Area Codes
Hocking County OH 43127 Haydenville 220, 740
Hocking County OH 43135 Laurelville 220, 740
Hocking County OH 43138 Logan 220, 740
Hocking County OH 43144 Murray City 220, 740
Hocking County OH 43149 Rockbridge 220, 740
Hocking County OH 43152 South Bloomingville 220, 740
Hocking County OH 43158 Union Furnace 220, 740
Licking County OH 43721 Brownsville 220, 740
Licking County OH 43740 Gratiot 220, 740
King County TX 79236 Guthrie 806, 940
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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.