Chambers of Commerce go Results Found: 3 Button group with nested dropdown Champaign County Chamber of Commerce Champaign County Chamber of Commerce 303 W. Kirby Ave. Champaign IL 61820-7207 (217) 359-1791 Mahomet Area Chamber of Commerce Mahomet Area Chamber of Commerce 512 E. Main St. P.O. Box 1031 Mahomet IL 61853-1031 (217) 586-3165 Rantoul Area Chamber of Commerce Rantoul Area Chamber of Commerce 120 E. Sangamon Ave. Rantoul IL 61866-2369 (217) 893-3323