'''Washington County''' is a county located in the [[Lead Belt]] region of southeast [[Missouri]]. It had a population of 25,195 at the 2010 census. [[Potosi, Missouri|Potosi]] is the county seat and largest city. One of the oldest counties in the state, it was officially organized in 1813 and named after [[George Washington]], the first [[President of the United States]]. | '''Washington County''' is a county located in the [[Lead Belt]] region of southeast [[Missouri]]. It had a population of 25,195 at the 2010 census. [[Potosi, Missouri|Potosi]] is the county seat and largest city. One of the oldest counties in the state, it was officially organized in 1813 and named after [[George Washington]], the first [[President of the United States]]. |