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O’Fallon-Shiloh Chamber of Commerce
116 East First Street
O’Fallon, Illinois 62269

Mailing Address:
P.O. Box 371
O’Fallon, Illinois 62269

(618) 632-3377
Fax: (618) 632-8162
Web site: OFallonChamber.com

Office Hours:
Monday – Friday
9 a.m. – 12 p.m.
1 p.m. – 4 p.m.
(Closed for lunch from noon – 1 p.m.)