About St. Charles County Government and Our Community

Founded in 1812, St. Charles County is one of the fastest growing counties in Missouri, and the state’s third largest county in both population and economic share. It is home to 15 scenic county parks encompassing more than 3,643 acres with additional land under development and more in reserve for future development. 

With a population of 395,504, St Charles County is home to large employers including General Motors, Citi, MasterCard Worldwide and Boeing. It is ranked among the top 25 counties in the nation in high-tech job growth by the Progressive Policy Institute and consistently has the lowest unemployment rate in the Metropolitan St. Louis area. 

St. Charles County Government employs over 1,100 in more than 30 departments and offices, who work to make the county an excellent place to live, work and shop.