State Auto Insurance provides insurance services for automobile, boats, business and farm. It operates as a subsidiary of State Auto Financial Corporation, a regional insurance holding company. Located in Columbus, Ohio, State Auto Financial Corporation offers personal and commercial insurance for both standard and nonstandard insurance markets. The company's line of business includes personal and commercial auto, homeowners, commercial multi-peril, fire and general liability insurance. Its insurance subsidiaries consist of State Auto Property and Casualty Insurance Company, Milbank Insurance Company, Farmers Casualty Insurance Company and State Auto National Insurance Company. State Auto Financial Corporation is affiliated with State Automobile Mutual Insurance Company.