ILLINOIS STATE ARCHIVES

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Ogle County

Established
January 16, 1836 (Laws, 1836, p. 274)
County organization was completed in 1837.

Origin of the name of the county
Named for Joseph Ogle, pioneer politician and Lieutenant of the Territorial militia.

Present area, or parts of it, formerly included in
1836–1837 — Attached to JoDaviess (Laws, 1836, p. 277)
1831–1836 — LaSalle
1827–1836 — JoDaviess
1825–1831 — Putnam
1823–1825 — Fulton
1821–1823 — Pike
1819–1821 — Clark
1816–1819 — Crawford
1815–1816 — Edwards
1812–1815 — Madison
1817–1821 — Bond
1795–1812 — St. Clair

County Seats
1838–  — Oregon

History of county governing board
1837–1850 — County Commissioners’ Court
1850–  — County Board of Supervisors

Township Government
Adopted — November 6, 1849

Township Names
Brookville
Buffalo
Byron
Dement — Formed from Flagg on February 13, 1856.
Eagle Point — Formed from Buffalo in September, 1869.
Flagg
Forreston — Formed from Brookville on March 4, 1857.
Grand Detour
Lafayette
Leaf River
Lincoln — Formed as Haldane from Buffalo and Mt. Morris in September, 1869; changed name from Haldane to Lincoln in December, 1873.
Lynnville
Marion
Maryland — Name changed from Harrison on November 12, 1850.
Monroe
Mount Morris
Nashua
Oregon
Pine Creek
Pine Rock — Name changed from Eagle on November 12, 1850.
Rockvale — Name changed from Brooklyn on November 12, 1850.
Scott
Taylor
White Rock
Woosung — Formed from Buffalo on September 15, 1880.

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 Ogle County Almshouse Register Index (1878–1933)
Ogle County Naturalization Papers (County Court) Index (1872–1906)