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
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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 63304 Saint Charles St. Charles County 636
MO 63330 Annada Pike County 573, 618
MO 63332 Augusta St. Charles County 636
MO 63333 Bellflower Montgomery County 573, 636
MO 63334 Bowling Green Pike County 573
MO 63336 Clarksville Pike County 573
MO 63338 Cottleville St. Charles County 636
MO 63339 Curryville Pike County 573
MO 63341 Defiance St. Charles County 636
MO 63342 Dutzow Warren County 636
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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.