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
All states and U.S. territories
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State directory

Missouri ZIP Codes

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

State ZIP Code City County Area Codes
MO 63383 Warrenton Warren County 636
MO 63384 Wellsville Montgomery County 573
MO 63385 Wentzville St. Charles County 636
MO 63386 West Alton St. Charles County 314, 557, 618, 636
MO 63387 Whiteside Lincoln County 573
MO 63388 Williamsburg Callaway County 573
MO 63389 Winfield Lincoln County 618, 636
MO 63390 Wright City Warren County 636
MO 63401 Hannibal Marion County 217, 447, 573
MO 63430 Alexandria Clark County 217, 319, 447, 660
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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.