Find Missouri county and township maps.
St. Louis County, Missouri
Find your Missouri County by searching for your address, or by clicking on the map.
St. Louis County, Missouri Map
An detailed map of St. Louis County. Click on a nearby County to view more information about that County.
Map of Townships in St. Louis County, Missouri
An interactive map of county subdivisions in St. Louis County. In Missouri, that can include Townships. Find what township you are in now.
Map of Counties in Missouri
An interactive map of Counties in Missouri. Click on a County to view more information about that County.
About St. Louis County, Missouri
St. Louis County is located in the eastern-central portion of Missouri. It is bounded by the City of St. Louis and the Mississippi River to the east, the Missouri River to the north, and the Meramec River to the south. At the 2020 census, the total population was 1,004,125, making it the most populous county in Missouri. Its county seat is Clayton. The county is included in the St. Louis, MO–IL metropolitan statistical area.
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This site has an interactive map of Missouri Counties. Click on the map to find your Missouri county, and view more details. You can also search for your address and use your GPS to find your Missouri County.
Find what County you are in, and see official Missouri County resources and information. Find any county in the United Stated, along with resources and links to official County websites. See a County map and local details. Looking for what county you are currently in? Find out on this map or use your device GPS to see what county you are in.