Allstate Corporation is a prominent American insurance company, established in 1931 and headquartered in Northbrook, Illinois. It is the second largest property and casualty insurer in the United States, holding about 12% of the home and auto insurance market. Allstate became fully independent in 1995 after separating from Sears, Roebuck and Co.

The company provides a diverse array of insurance and financial products, including auto and homeowners insurance, life insurance, annuities, and business insurance. Allstate's offerings are available through exclusive agents, independent agents, call centers, and online platforms. The company serves approximately 16 to 20 million customers across the U.S. and Canada, supported by a large network of agents. Allstate is recognized for its commitment to customer service and has a history of innovation in the insurance industry, including the introduction of the Good Driver Discount and merit rating plans.