Mercer County, Illinois, USA

• Location within Illinois
• Township Map
• Community Map
• Communities

• Roosevelt Military Academy
• Mercer County in the Civil War
• Suzy Bogguss
• Mercer County Fair

Mercer County Courthouse, Aledo.
Photo courtesy of Aledo Chamber of Commerce.

Named for Hugh Mercer

Hugh Mercer [1726-1777] was a physician. A general during the American Revolution, Mercer was mortally wounded at the battle of Princeton.

Established Seven Years after Illinois became a State

Formed from unorganized territory attached to Pike County, Illinois on 13 Jan 1825.

Part of the Military Tract

Land granted to veterans of the War of 1812. [More about the Military Tract]

Mercer County Historical Society

The historical society maintains three buildings of the Essley-Noble Museum. The society's address is 1406 SE 2nd Ave, Aledo, IL.