This graphic takes the top insurance providers in Chattanooga, TN and compares the average monthly cost of their respective premiums against the average cost of $276. The state’s top providers, and the percent difference that is between their average monthly cost and the average cost in the city as a whole are: Allstate (31%), Farmers (-2%), GEICO (-6%), Nationwide (4%), Progressive (3%), State Farm (-21%), and USAA (-20%).