This is a list of insurance companies based in the United States. These are companies with a strong national or regional presence.
U.S. insurance companies
Main article: Insurance in the United States
21st Century Insurance
AccuQuote
Alleghany Corporation
Allied Insurance
Allstate
American Automobile Association
American Family Insurance
American Income Life Insurance Company
American International Group (AIG)
American National Insurance Company
Ameritas
Amica Mutual Insurance
Aon Corporation
Assurant
Assurity
Auto-Owners Insurance
AXA Equitable Life Insurance Company
Bankers Life & Casualty Company
Berkshire Hathaway
California Casualty
Capital Insurance Group
Cincinnati Insurance Company
CNA Financial
Colonial Life & Accident Insurance Company
Commerce Insurance Group
Conseco
Country Financial
Chartis
Chubb Corp.
Encompass Insurance Company
Erie Insurance Group
Esurance
Everest Re Group
Evergreen USA RRG
Farmers Insurance Group
Federated Mutual Insurance Company
GAINSCO
GEICO
General Re
Genworth Financial
GMAC Insurance
Guardian Life Insurance Company of America
Hanover Insurance
The Hartford
HCC Insurance Holdings
Hereford Insurance Company
Infinity Property & Casualty Corporation
Insurance Company of the West (ICW Group)
International Fidelity Insurance Company
Illinois Mutual
Jackson National Life
John Hancock Insurance
Kemper Insurance
lgap Insurance
Knights of Columbus Insurance
Liberty Mutual
Markel Corporation
MassMutual Financial Group
Merchants Insurance Group
Mercury Insurance Group
MetLife
Mutual of America
Mutual of Omaha
Nationwide Mutual Insurance Company
New Jersey Manufacturers Insurance Company
New York Life Insurance Company
Northwestern Mutual
Ohio National
OneBeacon
Oxford Health Plans
Pacific Life
PEMCO
Penn Mutual
Primerica
Principal Financial Group
Progressive
Protective Life
Prudential Financial
The Regence Group
Reliance Insurance Company
Response Insurance
RLI Corp.
Safe Auto Insurance Company
Safeco
Safeway Insurance Group
Sentry Insurance
Selective Insurance
Shelter Insurance
Southern Aid and Insurance Company
Standard Insurance Company
State Farm Insurance
Swiss Re
Symetra
Tri-State Consumer Insurance Company
TIAA-CREF
The Travelers Companies
Uniguard - Headquarter in greater Seattle area
United Auto Insurance Company
Unitrin Direct Auto Insurance
Unum
Vantislife Insurance Company
Volusia
USAA
Wawanesa Insurance USA (CA and OR)
Wells Fargo
West Coast Life
Western Mutual Insurance Group
Western & Southern Financial Group
Westfield Insurance
Western Reserve Life Insurance Company
White Mountains Insurance Group
source:wikipedia.org
