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 63353 Louisiana Pike County 217, 447, 573
MO 63357 Marthasville Warren County 573, 636
MO 63359 Middletown Montgomery County 573
MO 63361 Montgomery City Montgomery County 573, 636
MO 63362 Moscow Mills Lincoln County 636
MO 63363 New Florence Montgomery County 573, 636
MO 63365 New Melle St. Charles County 636
MO 63366 O Fallon St. Charles County 636
MO 63367 Lake Saint Louis St. Charles County 636
MO 63368 O Fallon St. Charles 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.