* Core demographic data is based on information taken from the 2000 Census. Business data is from Business Census 2003 and CBSA data is from December 2006 Census CBSA data.
Greater Springfield Chamber of Commerce , (217) 525-1173, www.gscc.org Illinois Association of Chamber of Commerce Executives , (217) 522-5512, www.iacce.org Illinois State Chamber of Commerce , (312) 987-7100, www.ilchamber.org