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 64503 Saint Joseph Buchanan County 785, 816, 913
MO 64504 Saint Joseph Buchanan County 785, 816, 913
MO 64505 Saint Joseph Buchanan County 785, 816
MO 64506 Saint Joseph Buchanan County 816
MO 64507 Saint Joseph Buchanan County 816
MO 64508 Saint Joseph Buchanan County 816
MO 64601 Chillicothe Livingston County 660
MO 64620 Altamont Daviess County 660
MO 64622 Bogard Carroll County 660
MO 64623 Bosworth Carroll 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.