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 65231 Auxvasse Callaway County 573
MO 65232 Benton City Audrain County 573
MO 65233 Boonville Cooper County 573, 660
MO 65236 Brunswick Chariton County 660
MO 65237 Bunceton Cooper County 660
MO 65239 Cairo Randolph County 660
MO 65240 Centralia Boone County 573, 660
MO 65243 Clark Randolph County 573, 660
MO 65244 Clifton Hill Randolph County 660
MO 65246 Dalton Chariton County 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.