Illinois Regional Archives Depository (IRAD) System Illinois State Archives
IRAD Home • Administrative Histories / Record Descriptions • Local Government Records Database • Quick Links • Regional Map and Contact Information • Research Policy
Logan County

Logan County Courthouse
601 Broadway St.
Lincoln, IL 62656
217-732-4148 – County Clerk
217-735-2376 – Circuit Clerk
217-732-4148 – Recorder
IRAD Depository
Illinois State University
2016 Warehouse Rd.
Campus Box 1520
Normal, IL 61790-1520
309-452-6027
Established
- February 15, 1839 (Laws, 1839, p. 104)
Origin of the name of the county
- Named for Dr. John Logan, a pioneer physician, father of General John A. Logan.
Present area, or parts of it, formerly included in
- 1827–1839 – Tazewell
- 1821–1839 – Sangamon
- 1817–1821 – Bond
- 1812–1817 – Madison
- 1790–1812 – St. Clair
- 1790–1801 – Knox, Northwest Territory

County Seats
- 1839–1847 – Postville – Name changed to Camden prior to 1847.
- 1847–1853 – Mt. Pulaski
- 1853–present – Lincoln
History of county governing board
- 1839–1849 – County Commissioners’ Court
- 1849–1867 – County Court
- 1867–present – County Board of Supervisors
Documented Record Losses
- April 15, 1857 – Fire. Total record loss (1839–1857).
Township Government
- Adopted – November 7, 1865 (Completion of township organization was delayed until 1867 by a court suit.)

Township Names
- Aetna
- Atlanta
- Broadwell
- Chester – Name changed from Madison to Chester (date unknown, before 1921).
- Corwin – Name changed from Middletown (date unknown).
- East Lincoln
- Elkhart
- Eminence
- Hurlbut
- Laenna
- Lake Fork
- Mt. Pulaski
- Oran
- Orvil
- Prairie Creek
- Sheridan
- West Lincoln
Township Map
Pertinent Databases