Where is grange mutual casualty company located? Key people. Grange Mutual Casualty Company, commonly known as Grange Insurance, is an American insurance company based in Columbus, Ohio. Grange markets its products exclusively through a network of about 3,600 independent agents to offer home, auto, life, and business insurance protection to policyholders.Who is the new director of grange insurance company? COLUMBUS, Ohio-- (BUSINESS WIRE)--Today, Grange Insurance announced Jim Benson’s appointment to the Grange Mutual Holding Company Board of Directors effective Feb. 25, 2021.How do i contact ncnc grange mutual insurance company? NC Grange Mutual Insurance Company — Contact Information Office Hours Monday-Thursday: 8:00 am - 4:30 pm Friday: 8:00 am - 1:00 pm Phone: 1-800-394-1236 Fax: 1-336-292-1923 Mailing Address: PO Box 9558