Jefferson County is sandwiched between four larger counties. We are surrounded by Shawnee, Leavenworth, Douglas and Atchison counties. The county consists of eight third class cities, 12 townships and is the home of Perry Lake.

Perry Lake was built by the Corp of Engineers as a reservoir covering 12,000 acres with dedication ceremonies in August 1970. The lake is the third largest in the State of Kansas.

The current census for Jefferson County, KS is 18,243 people. The original courthouse was built in 1867 and was the oldest courthouse in the state until it was destroyed by a tornado in 1960. The current courthouse was occupied in 1962.

John Stuart Curry, renown artist, was a native of Winchester, KS in Jefferson County and was buried there. Some of his breathtaking murals decorate the Kansas State Capitol in Topeka.

The Board of Commissioners conduct the county business every Monday. Their elected offices are held in four-year terms.