phone number: fax number: emergency response program: 928-428-0110: 928-428-8074: public health: 928-428-0110: 928-428-8074
Springfield, Illinois. Springfield is the capital of the U.S. state of Illinois and the county seat of Sangamon County. The city's population of 116,250 as of the 2010 U.S. Census makes it the state's sixth most populous city. It is the largest city in central Illinois.
1 major mustering-in site for Civil War. 2  named for William Butler, treasurer of state of Illinois for 2 terms [1859-1863] who was from Sangamon County. 3  east of Springfield on Clear Lake.  first troops arrived in Aug 1861.