About St. Charles County Government and Our Community

St. Charles County, Missouri, founded in 1812, is one of the fastest growing counties in Missouri. With a population of 405,262, is it the state’s third largest county. It is home to 17 scenic county parks encompassing nearly 4,000 acres with additional land under development and more in reserve for future development. 

With one of the largest economies in the state, St. Charles County is home to multinational companies 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 has more than 1,170 employees in more than 30 departments and offices who work to make the county an excellent place to live, work and shop.