Our Members

Who we represent

Our members include 27 domestic P/C companies, 14 foreign P/C insurers and reinsurers, eight insurance trade associations and five insurance-related organizations.

OII’s member companies represent 87% of Ohio’s private passenger auto insurance market, 81% of the homeowners market and 50% of the commercial market (based on 2017 market share data from the Ohio Department of Insurance).

Allstate Insurance Company
American Family Insurance Group
Auto-Owners Insurance Company
Buckeye Insurance Group
Central Insurance Companies
Century Insurance Group
Cincinnati Insurance Board
The Cincinnati Insurance Companies
CNA Insurance Group
Crossroads Property Restoration
Demotech, Inc.
Eastern Ohio Mutual Insurance
EMC Insurance Companies
Erie Insurance Group
Evergreen National Indemnity Co.
Farmers Insurance Group
Farmers Mutual Insurance Company
FCCI Insurance Group
German Mutual Insurance Company
Grange Insurance Companies
Great American Insurance Group
Grinnell Mutual Reinsurance Co.
Imperial PFS
Maiden Re
MAPFRE Insurance
Marias Technology

Mennonite Mutual Aid Society
Mennonite Mutual Insurance Company
Motorists Insurance Group
MSO, Inc.
National Assn. of Mutual Insurance Companies (NAMIC)
National Insurance Crime Bureau (NICB)
Norton Mutual Fire Association
Ohio Insurance Agents Association
(formerly PIAA of Ohio)
Ohio Mutual Insurance Group
Perry County Mutual Fire Insurance Company
Progressive Insurance Group
Property Casualty Insurers Association of America
Reinsurance Association of America
Springfield Township Mutual Insurance Association
State Auto Insurance
State Farm Insurance Companies
Swiss Re
Travelers Insurance 
Washington County Farmers Mutual Insurance Association
Washington Mutual Insurance Association (Note: Part of Wayne Mutual Group)
Wayne Insurance Group
Western Reserve Group
Westfield Group
Wyandot Mutual Insurance Company