Leavenworth County is located in the northeastern part of the state of Kansas, USA. It was established in 1855 and is named after the city of Leavenworth, which is the county seat. The county is known for its rich history and diverse communities, including several small towns and rural areas. The county covers an area of approximately 463 square miles and is bordered by the Missouri River to the east. Leavenworth County is home to various parks, recreational areas, and historical sites, making it a place of interest for both residents and visitors.