This graphic takes the top insurance providers in Elk Grove, CA and compares the average monthly cost of their respective premiums against the average cost of $327. 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 (24%), Farmers (26%), GEICO (-38%), Nationwide (20%), Progressive (-36%), State Farm (14%), and USAA (-37%).