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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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Marion County ZIP Codes

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

County State ZIP Code City Area Codes
Marion County KY 40063 Saint Mary 270, 364
Marion County KY 40328 Gravel Switch 270, 364, 606, 859
Marion County MO 63401 Hannibal 217, 447, 573
Marion County MO 63454 Maywood 573
Marion County MO 63461 Palmyra 217, 447, 573
Marion County MO 63463 Philadelphia 573
Marion County MO 63471 Taylor 217, 447, 573
Marion County MS 39429 Columbia 601, 769, 985
Marion County MS 39478 Sandy Hook 601, 769, 985
Marion County MS 39483 Foxworth 601, 769
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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.