Mercer County is located in the western part of Illinois and is part of the Quad Cities metropolitan area. The county seat is Aledo.

Mercer County is governed by a seven-member Board of Commissioners. The board is responsible for setting policy and overseeing the county's budget. The county also has a county executive, who is responsible for the day-to-day operations of the county.

The county is served by two school districts: Mercer County Community Unit School District 404 and Sherrard Community Unit School District 200.

The county is home to several parks, including Mercer County Park, which features a lake, campground, and picnic areas.

The county is also home to several museums, including the Mercer County Historical Museum, which features artifacts from the county's history.

The county is served by two hospitals: Mercer County Hospital and Mercer County Medical Center.

For the most up-to-date and in-depth information, please check the public records links below.