Otto Insurance Group Share: Insurance Otto Insurance Group Visit Website Request Info 523 Madison Way Plain City, OH 43064 (614) 397-7544 LinkedIn Hours: 8am-6pm M-F About Map About Otto Insurance Group offers first-rate insurance for residents living across Ohio. Our independent insurance agency chooses the best carriers at the most competitive rates for your needs. Directions Please contact for meeting location What's Nearby? Distance: 5 10 15 20 25 50 mi.