Ottumwa Chamber of Commerce 217 East Main Street PO Box 308 Ottumwa, IA 52501 USA Phone: (641) 682-3465  Official Website  Find Local Businesses The Ottumwa Area Chamber of Commerce has a proud history that spans more than 100 years. Established in 1902, as the "Commercial Club," with 177 local businessmen and professionals to "...vigorously act upon every opportunity to promote the prosperity of the city."

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