Crawford County, Missouri
Crawford County is a county located in the east-central portion of the U.S. state of Missouri. At the 2020 Census, the population was 23,056. The county was organized in 1829 and is named after U.S. Senator William H. Crawford of Georgia. Its county seat, Steelville, was laid out in 1836.
The section of Sullivan which is located in Crawford County is included in the St. Louis, MO-IL metropolitan statistical area.
In 1990, the mean center of U.S. population was located in southwestern Crawford County.