Best List of United States insurance companies

 21st Century Insurance

AARP
ACE Limited
Acuity
Elephant.com
Admiral Life Insurance
Aetna
Aetna for life
Affirmative Insurance
Aflac
Alleghany Corporation
Allied Insurance
Alfa
Allstate
American Automobile Association (AAA)
American Family Insurance
American Income Life Insurance Company
American International Group (AIG)
American National Insurance Company
American Strategic Insurance (ASI)
American Tri-Star Insurance Services
Ameritas Life Insurance Company
AMERICUS INSURANCE
Amica Mutual Insurance
Amtrust Financial Services
Andy Insurance
Applied Underwriters
Arbella Insurance Group
Assurity Life Insurance Company
Auto-Owners Insurance
AXA Equitable Life Insurance Company
Azimuth risk solutions
Bankers Life and Casualty Company
Berkshire Hathaway
Blue Advantage
Brotherhood Mutual Insurance Company
CareSource
Central Insurance Companies
Champ VA
Chappell Insurance Services
Chubb Corp
Cigna Health Spring
Cincinnati Insurance Company
Civil Service Employees
CNA Financial
CNO Financial Group
Colonial Life & Accident Insurance Company
Combined Insurance
Commerce Insurance Group
Country Financial
Country-Wide Insurance Company
Delta Dental
Elephant Auto Insurance
Encompass Insurance Company
Erie Insurance Group
Esurance
Evergreen USA RRG
Farmers Insurance Group
Federal Life Insurance Company
Federated Mutual Insurance Company
First Insurance Company of Hawaii
FM Global
GAINSCO
GEICO
General Re
Genworth Financial
Gerber Life Insurance Company
Globe Life And Accident Insurance Company
GMAC Insurance
Gracy Title Company
Grange Mutual Casualty Company
The Guardian Life Insurance Company of America
GuideOne Insurance
Hanover Insurance
The Hartford
HCC Insurance Holdings
Hiscox Small Business Insurance
Horace Mann Educators Corporation
Homeowners Choice Property & Casualty Insurance Inc.,
Inaam Abbasi Insurance Company (IAIC)
Infinity Property & Casualty Corporation
Insurance Panda
InsureScan
IntelliQuote Insurance Services
Ironshore
Jackson National Life
John Hancock Insurance
K&K Insurance
Kansas City Life Insurance Company
Kentucky Farm Bureau
Knights of Columbus
Lemonade (insurance)
Liberty Mutual
Lincoln National Corporation
Manhattan Life Insurance Company
Markel Corporation
MassMutual
Mass Health Insurance
MBBS ( Mohtarma Bainzeer Bhutto Shaheed )
Merchants Insurance Group
Mercury Insurance Group
MetLife
MMG Insurance
Modern Woodmen of America
Mutual of Omaha
National Life
Nationwide Mutual Insurance Company
New Jersey Manufacturers Insurance Company
New York Life Insurance Company
The Norfolk & Dedham Group
Northwestern Mutual
Ohio National Financial Services
Omega
OneBeacon
Oxford Health Plans
Pacific Life
Pacificare
PEMCO
Penn Mutual
Philadelphia Contributionship for the Insurance of Houses from Loss by Fire
Philadelphia Insurance Companies
Physicians Mutual
Primerica
Principal Financial Group
Progressive
ProSight Specialty Insurance
Protective Life
Prudential Financial
Pure Insurance
QBE
The Regence Group
Reliance Insurance Company
RLI Corp.
Safe Auto Insurance Company
Safeco
Safeway Insurance Group
Securian Financial Group
Selective Insurance
Sentry Insurance
Shelter Insurance
Southern Aid and Insurance Company
Southern Farm Bureau Life Insurance Company
Standard Insurance Company
State Auto Insurance Company
State Farm Insurance
Stillwater Insurance Group
Sun Life Financial
Symetra
TIAA-CREF
Transamerica Corporation
The Producer's Group
The Travelers Companies
Tricare
Tricare For Life
TriWest
Trupanion
Unum
USAA
US Health Group
Vantage Health Plan
Veteran Affairs
Wellmed Healthcare Insurance
West Bend Mutual Insurance
West Coast Life
Western & Southern Financial Group
Western Mutual Insurance Group
Westfield Insurance
Westminster American Insurance Company
White Mountains Insurance Group
XL Catlin