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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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Allen County ZIP Codes

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

County State ZIP Code City Area Codes
Allen County KS 66772 Savonburg 620
Allen County KY 42120 Adolphus 270, 364, 615, 629
Allen County KY 42153 Holland 270, 364
Allen County KY 42164 Scottsville 270, 364, 615, 629
Allen County OH 45801 Lima 419, 567
Allen County OH 45802 Lima 419
Allen County OH 45804 Lima 419, 567
Allen County OH 45805 Lima 419, 567
Allen County OH 45806 Lima 419, 567
Allen County OH 45807 Lima 419, 567
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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.