Whiteside County is located in the northwestern part of the state of Illinois. It was established in 1836 and is named after William Whiteside, a soldier in the Black Hawk War. The county seat is Morrison, which is known for its historic downtown and community events. The county covers an area of approximately 1,200 square miles and features a mix of rural landscapes, small towns, and the Rock River. It is home to several parks and recreational areas, making it a great place for outdoor activities like hiking, fishing, and camping.