St. Louis County, MO Zip Codes
18 zip codes across 1 cities in St. Louis County, MO
About St. Louis County
St. Louis County, Missouri (MO) contains 18 unique zip codes spanning 1 cities and communities. Each zip code covers a different area within the county, with varying demographics, income levels, and housing markets.
Browse the complete list below to find detailed population, income, home values, cost of living, and climate data for any zip code in St. Louis County.
Cities in St. Louis County
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All Zip Codes in St. Louis County, MO
| Zip Code | City |
|---|---|
| 63101 | Saint Louis |
| 63102 | Saint Louis |
| 63103 | Saint Louis |
| 63104 | Saint Louis |
| 63106 | Saint Louis |
| 63107 | Saint Louis |
| 63108 | Saint Louis |
| 63109 | Saint Louis |
| 63110 | Saint Louis |
| 63111 | Saint Louis |
| 63112 | Saint Louis |
| 63113 | Saint Louis |
| 63115 | Saint Louis |
| 63116 | Saint Louis |
| 63118 | Saint Louis |
| 63120 | Saint Louis |
| 63139 | Saint Louis |
| 63147 | Saint Louis |
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Frequently Asked Questions
How many zip codes are in St. Louis County, MO?
St. Louis County, MO has 18 zip codes across 1 cities.
What cities are in St. Louis County?
Cities in St. Louis County include Saint Louis.
What state is St. Louis County in?
St. Louis County is located in Missouri (MO).
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.