Explore › St. Louis County, Missouri
Things to see

St. Louis County, Missouri

County in Missouri, United States

About

St. Louis County is located in eastern 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. As of the 2020 census, the population was 1,004,125, making it the most populous county in Missouri, and was estimated to be 987,059 in 2023. Its county seat is Clayton, while the largest city is Florissant. The county is included in the St. Louis, MO–IL metropolitan statistical area.

After Great Britain took over former French territory east of the Mississippi River, many ethnic French colonists moved west. They settled the area of St. Louis County and founded the city of St. Louis in the late 1700s. The US acquired this territory in 1803 with the Louisiana Purchase.

Huginn is writing the St. Louis County, Missouri guide — this takes a few seconds the first time.

Nearby

More to see within walking distance

Places to eat nearby

Finding places to eat…

Traveler reviews

Loading reviews…

Tickets & tours

We may earn a commission from some of these links, at no extra cost to you. Learn more

Photos from Unsplash, Wikipedia and Wikimedia Commons (CC BY-SA); facts from Wikipedia; maps © OpenStreetMap contributors, weather from Open-Meteo. Huginn’s tips are AI-written — check prices, hours and entry rules before you go.