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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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Muhlenberg County ZIP Codes

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

County State ZIP Code City Area Codes
Muhlenberg County KY 42345 Greenville 270, 364
Muhlenberg County KY 42367 Powderly 270, 364
Muhlenberg County KY 42374 South Carrollton 270, 364
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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.