Jersey County is located in the southwestern part of the state of Illinois, bordered by the Mississippi River to the west. It covers an area of approximately 360 square miles and is known for its rural landscape, including farmland and small communities. The county seat is Jerseyville, which serves as the main hub for local government and services. The population of Jersey County is around 22,000 residents, with a mix of agricultural and residential areas. The county is home to several parks and recreational areas, providing opportunities for outdoor activities such as hiking, fishing, and camping. It also hosts various local events that celebrate the community's heritage and culture.