Illinois Regional Archives Depository (IRAD) System Illinois State Archives
Morgan County Courthouse
300 W. State St.
Jacksonville, IL 62650
217-243-8581 – County Clerk
217-243-5419 – Circuit Clerk
217-243-8581 – Recorder
University of Illinois at Springfield
One University Plaza, MS BRK 140
Springfield IL 62703-5407
- January 31, 1823 (Laws, 1823, p. 108.)
Origin of the name of the county
- Named for Daniel Morgan, a General of the American Revolution, who, as commander of the "Rifle Brigade," served with distinction at Quebec, Saratoga, the Cowpens, and other important engagements.
Present area, or parts of it, formerly included in
- 1821–1823 – Greene
- 1812–1821 – Madison
- 1790–1812 – St. Clair
- 1823–1825 – Olmstead’s Mounds—Temporary designation.
- 1825–present – Jacksonville
History of county governing board
- 1823–1849 – County Commissioners’ Court
- 1849–1873 – County Court
- 1873–present – Board of County Commissioners
Documented Record Losses
- December 6, 1827 – Fire. Most records lost (1823–1827).
- Morgan County has never adopted township form of government. The county has been divided into precincts.