Us Internal Revenue Service 310 W Church St Champaign, IL 61820 Phone : (217) 398-5210 Business Category Public Finance Taxation & Monetary Policy Internal Revenue Service--local Area Office Champaign, IL 61820 Phone : (217) 398-5210 Business Category Government Offices-Federal Government Offices & Public Schools United States Government--internal Revenue Service, Local Area Office Champaign, IL 61820 Phone : (217) 398-5210 Business Category Government Offices-Federal Government Offices & Public Schools