Pike County is located in the western part of Illinois and is part of the Quincy, IL–MO Micropolitan Statistical Area. The county seat is Pittsfield.

The county government is based in the Pike County Courthouse in Pittsfield. The county is divided into 17 townships, and is governed by a board of commissioners. The county is also served by a state's attorney, circuit clerk, sheriff, coroner, and treasurer.

Pike County is home to several state parks, including the Pike County State Fish and Wildlife Area, the Mississippi Palisades State Park, and the Apple Creek State Wildlife Area. The county is also home to the Pike County Historical Society, which operates a museum in Pittsfield.

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