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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Fairfield County ZIP Codes

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

County State ZIP Code City Area Codes
Fairfield County OH 43046 Millersport 220, 740
Fairfield County OH 43102 Amanda 220, 380, 614, 740
Fairfield County OH 43105 Baltimore 220, 380, 614, 740
Fairfield County OH 43107 Bremen 220, 740
Fairfield County OH 43112 Carroll 220, 380, 614, 740
Fairfield County OH 43130 Lancaster 220, 380, 614, 740
Fairfield County OH 43136 Lithopolis 380, 614
Fairfield County OH 43147 Pickerington 220, 380, 614, 740
Fairfield County OH 43148 Pleasantville 220, 740
Fairfield County OH 43150 Rushville 220, 740
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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.