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Hamilton County

Established
February 8, 1821 (Laws, 1821, p. 113)

Origin of the name of the county
Named for Alexander Hamilton, a soldier, statesman, author and financier, aid on the staff of Washington during the Revolution, a member of the Continental Congress, first Secretary of Treasury (1789–1795), and Commander-in-Chief of the United States Army in 1799.

Present area, or parts of it, formerly included in
1815–1821 — White
1812–1815 — Gallatin
1801–1812 — Randolph
1795–1801 — St. Clair
1790–1795 — Knox, Northwest Territory

County Seats
1821–  — McLeansboro

History of county governing board
1821–1849 — County Commissioners’ Court
1849–1873 — County Court
1873–1886 — Board of County Commissioners
1886–  — County Board of Supervisors

Township Government
Adopted — November 3, 1885

Township Names
Beaver Creek
Crook
Crouch
Dahlgren
Flannigan
Knights Prairie
Mayberry
McLeansboro
South Crouch — Formed from Crouch (date unknown: after 1921).
South Flannigan — Formed from Flannigan (date unknown).
South Twigg — Formed from Twigg (date unknown).
Twigg

Township Map

Pertinent Databases
Federal Township Plats of Illinois
Illinois Public Domain Land Tract Sales Database
Illinois Statewide Death Index, 1916–1950
Illinois Statewide Marriage Index
Local Governmental Records Database
Name Index to Illinois Local Governments