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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State directory

Ohio ZIP Codes

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

State ZIP Code City County Area Codes
OH 45338 Lewisburg Preble County 326, 937
OH 45339 Ludlow Falls Miami County 326, 937
OH 45340 Maplewood Shelby County 326, 937
OH 45341 Medway Clark County 326, 937
OH 45342 Miamisburg Montgomery County 326, 937
OH 45343 Miamisburg Montgomery County 937
OH 45344 New Carlisle Clark County 326, 937
OH 45345 New Lebanon Montgomery County 326, 937
OH 45346 New Madison Darke County 326, 937
OH 45347 New Paris Preble County 326, 765, 937
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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.