ILLINOIS STATE ARCHIVES
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Kendall County
Contact InformationKendall County Office Building
111 W. Fox St.
Yorkville, IL 60560
630-553-4104 — County Clerk
630-553-4112 — Recorder
Circuit Clerk
Kendall County Courthouse
807 W. John St.
Yorkville, IL 60560
630-553-4183
Regional History Center
Founders Memorial Library
Rm. 400
Northern Illinois University
DeKalb, IL 60115
815-753-1807
Established
February 19, 1841 (Laws, 1841, p. 75)
Origin of the name of the county
For Amos Kendall, a successful politician and journalist, Postmaster General under Jackson, and as partner of S.F.B. Morse, the inventor of the electric telegraph, he contributed largely to the commercial success of that invention.
Present area, or parts of it, formerly included in
1836–1841 — Kane
1831–1841 — LaSalle
1825–1831 — Putnam
1823–1825 — Fulton
1821–1823 — Pike
1819–1821 — Clark
1816–1819 — Crawford
1815–1816 — Edwards
1812–1815 — Madison
1801–1812 — St. Clair
1790–1801 — Knox, Northwest Territory
County Seats
1841–1845 — Yorkville
1845–1864 — Oswego
1864– — Yorkville
History of county governing board
1841–1850 — County Commissioners’ Court
1850– — County Board of Supervisors
Township Government
Adopted — November 6, 1849
Township Names
Big Grove
Bristol
Fox
Kendall
Lisbon
Little Rock
Na-Au-Say
Oswego
Seward — Name changed from Franklin (date unknown).
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