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 63115 Saint Louis St. Louis city 314, 557
MO 63116 Saint Louis St. Louis city 314, 557
MO 63117 Saint Louis St. Louis County 314, 557
MO 63118 Saint Louis St. Louis city 314, 557, 618
MO 63119 Saint Louis St. Louis County 314, 557
MO 63120 Saint Louis St. Louis city 314, 557
MO 63121 Saint Louis St. Louis County 314, 557
MO 63122 Saint Louis St. Louis County 314, 557, 636
MO 63123 Saint Louis St. Louis County 314, 557
MO 63124 Saint Louis St. Louis County 314, 557
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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.