Allstate offers a protection product through multiple brands including auto, home, life, and other insurance. Allstate is one of the largest U.S. property-casualty insurers. Personal auto represents the largest percentage of revenue, but the company offers homeowners insurance and other insurance products. Life insurance contributes about 10% of revenue. Allstate products are sold in North America primarily by about 10,000 company agencies. Founded in 1931, Allstate is based in Northbrook, Illinois, United States.