Barton County is located in the southwestern part of the state of Missouri. It was established in 1855 and is named after Colonel Joseph Barton, a local military figure. The county seat is Lamar, which is known for its historical significance and as the birthplace of Harry S. Truman, the 33rd President of the United States. The county covers an area of approximately 1,800 square miles and features a mix of rural landscapes, including farmland and forests. Barton County is part of the Joplin, MO Metropolitan Statistical Area and offers various recreational opportunities, including parks and outdoor activities for residents and visitors alike.