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.
The Office of Management and Budget has designated the three-county Champaign-Urbana area as one of its metropolitan statistical areas (the Champaign-Urbana, IL MSA), which are used for statistical purposes by the Census Bureau and other agencies. The area has a population of 231,891 as determined by the 2010 U.S. Census.