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St. Louis County
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, [1] making it the most populous county in Missouri. Its county seat is Clayton. [2]
Discover the various departments and services offered by St. Louis County government on their official website.
The 5th Missouri Senate district is entirely within the city, while the 4th is shared with St. Louis County. At the federal level, St. Louis is the heart of Missouri's 1st congressional district, which also includes part of northern St. Louis County.
In 2022, St. Louis County, MO had a population of 1M people with a median age of 40.2 and a median household income of $78,067. Between 2021 and 2022 the population of St. Louis County, MO declined from 1M to 999,703, a −0.227% decrease and its median household income grew from $72,562 to $78,067, a 7.59% increase.
Explore the latest data and reports on COVID-19 cases, testing, and vaccination in St. Louis County. Learn how to protect yourself and others from the virus and find local resources and updates.
Open data is data that can be freely used, shared, and utilized by anyone. This data is provided by St. Louis County. You'll find maps, applications, reports, tables, and more. Click below to explore all of the available data or explore by category.
