Washington County
US county in Missouri
Washington County is located in the southeastern part of the U.S. state of Missouri. As of the 2020 United States census, the population was 23,514. The county seat and largest city is Potosi. Wikipedia
Cities: Potosi, Irondale, Mineral Point, and more
Population: 23,441 (2022)
Area: 762 mi²
Congressional district: 8th
Founded: August 21, 1813
Largest city: Potosi
Named for: President George Washington