St. Louis County, Missouri
county in Missouri, United States
St. Louis County is a county in Missouri, United States. The county seat is Clayton. In 2020, 1,004,125 people lived there.[1]
![](http://up.wiki.x.io/wikipedia/commons/thumb/4/4a/Map_of_Missouri_highlighting_Saint_Louis_County.svg/220px-Map_of_Missouri_highlighting_Saint_Louis_County.svg.png)
References
change- ↑ "QuickFacts: St. Louis County, Missouri". United States Census Bureau. Retrieved August 11, 2023.