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www .jeffcomo .org. Jefferson County is located in the eastern portion of the U.S. state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2020 census, the population was 226,739, [1] making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. [2]
Breaking news, sports, events from Jefferson County, Mo.
Jefferson County, Missouri, Hillsboro, Missouri. 5,707 likes · 63 talking about this · 2 were here. Jefferson County Missouri Government.
557 single family homes for sale in Jefferson County MO. View pictures of homes, review sales history, and use our detailed filters to find the perfect place.
The Jefferson County Tourism Commission is here to strengthen and grow Jefferson County's economy through travel and tourism which will bring more revenue to the county all while supporting our local businesses.
Heritage and Historical Society site containing free research access to cemetery and newspaper transcriptions, birth, death, marriage, court, military, and school records in Jefferson County, Missouri.
Jefferson County, Missouri has 656.3 square miles of land area and is the 39th largest county in Missouri by total area. Jefferson County, Missouri is bordered by Monroe County, Illinois, Franklin County, Missouri, Washington County, Missouri, Ste. Genevieve County, Missouri, St. Francois County, Missouri, and St. Louis County, Missouri.
