Addresses for County Courthouse and IRAD:

Established:		January 30, 1821 (Laws, 1821, p. 45)
Origin of the name of the county:
	Named after the Sangamon River which flows through the county which derived its name from the Pottawatomie Indian word Sain-guee-mon or Sangamon (pronounced sang gä mun) meaning literally "where there is plenty to eat" or what we would call the "land of milk and honey."
Present area, or parts of it, formerly included in:
	1817–1821	Bond
	1812–1821	Madison
	1790–1812	St. Clair
	1790–1801	Knox, Northwest Territory
County Seats:
	1821–1825	Springfield—Temporary designation.
	1825–	Springfield—Permanent designation.
	The Old State Capitol building was sold to Sangamon County and used as a courthouse from 1876 to 1961 when it was purchased by the State of Illinois.
History of county governing board:
	1821–1849	County Commissioners’ Court
	1849–1861	County Court
	1861–	County Board of Supervisors
Township Government
	Adopted:	November 6, 1860
Township Names:
	Auburn
	Ball
	Buffalo Hart
	Capital	Formed from Springfield on July 1, 1877; on February 17, 1892, the limits of Capitol Township were made co-extensive with the limits of the City of Springfield.
	Cartwright
	Chatham	Name changed from Campbell on September 2, 1863.
	Clear Lake
	Cooper
	Cotton Hill
	Curran
	Divernon	Formed from Pawnee (date unknown, before 1921.)
	Fancy Creek	Name changed from Power on September 11, 1861.
	Gardner
	Illiopolis
	Island Grove
	Lanesville	Formed from Illiopolis (date unknown, before 1921.)
	Loami
	Maxwell	Formed from Loami (date unknown, before 1921.)
	Mechanicsburg
	New Berlin	Formed from Island Grove on March 3, 1869.
	Pawnee
	Rochester
	Salisbury	Name changed from Sackett on September 9, 1867.
	Springfield
	Talkington
	Williams
	Woodside