Click here to see all Jefferson County, MO homes for sale.

Jefferson County is located in the eastern portion of the state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2010 census, the population was 218,733, making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. Wikipedia

Click here to see all St. Louis County, MO homes for sale.

St. Louis County is located in the eastern-central portion of Missouri. It is bounded by the city of St. Louis and the Mississippi River to the east, the Missouri River to the north, and the Meramec River to the south. As of the 2019 Census Bureau population estimate, the population was 994,205, making it the most populous county in Missouri. Its county seat is Clayton. Wikipedia

Click here to see all St. Francois County, MO homes for sale.

St. Francois County is a county located in the Lead Belt region in Missouri. The largest city and county seat is Farmington. The northern portion of the county is drained northward by the Big River and its tributaries, including the Flat River, most often known locally as "Flat River Creek." Wikipedia

Click here to see all Ste. Genevieve County, MO homes for sale.

Sainte Genevieve County, often abbreviated Ste. Genevieve County, is a county located in the eastern portion of Missouri. As of the 2010 census, the population was 18,145. The largest city and county seat is Ste. Genevieve. The county's northeastern border with Illinois is formed by the Mississippi River. Wikipedia

Click here to see all Washington County, MO homes for sale.

Washington County is located in the southeastern part of Missouri. As of the 2010 census, the population was 25,195. The county seat and largest city is Potosi. Wikipedia