The Hanover Insurance Group, Inc. (NYSE: THG), based in Worcester, Massachusetts., is the holding company for a group of insurers that includes The Hanover Insurance Company, also based in Worcester, Citizens Insurance Company of America, headquartered in Howell, Michigan, Chaucer Holdings PLC, based in London, and their affiliates.

The Hanover offers a wide range of property and casualty products and services to businesses, individuals, and families through a select group of independent agents across the U.S., and has been meeting its obligations to its agent partners and their customers for nearly 160 years. The company is ranked among the top 25 property and casualty insurers in the country and maintains excellent ratings from A.M. Best, Standard & Poor's, and Moody's.