According to our records, this business is located at 944 Highway 14 in Knoxville (in Marion County), Iowa 50138, the location GPS coordinates are: 41.3262581 (latitude), -93.1095004 (longitude). Optimist International is categorized under Fraternal Organizations (SIC code 8641). Known organization principal is Donald Kane. You can contact the company by phone at (641) 842-5079.