Below are the most recommended & trusted insurance companies in the US. Each of the following is linked to their insurance company profile on wikipedia, so you will get an unbiased description about them and their services.

• AIG
• Allstate
• American Automobile Association
• American Family Insurance
• American Income Life
• American National Insurance Company
• Amica
• Arbella
• Assurant Employee Benefits
• Auto-Owners Insurance
• CapitalOne
• CNA Financial
• Colonial Life
• Commerce Insurance Group
• Country Financial
• Chubb Corporation
• Encompass
• Erie Insurance Group
• Esurance
• Evergreen USA RRG
• Farmers Insurance
• GEICO
• Genworth
• GMAC Insurance
• Hanover Insurance
• The Hartford
• Independent Health
• Infinity Auto Insurance Company
• John Hancock Insurance
• Liberty Mutual
• Merchants Insurance Group
• Metropolitan Life Insurance Company
• Mutual of America Life Insurance Company
• Mutual of Enumclaw
• Mutual of Omaha
• Nationwide Insurance
• New York Life Insurance
• OneBeacon Insurance Group
• Pemco
• Principal Financial Group
• Progressive
• Prudential Financial
• Regence Group
• Response
• Safe Auto Insurance Company
• Safeco
• Safeway Insurance Group
• Selective
• Shelter Insurance Companies
• Standard Insurance Company
• State Farm Mutual Automobile Insurance Company
• Symetra Financial
• The Travelers Companies, Inc.
• TIAA-CREF
• Unitrin Direct Auto Insurance
• USAA
• Westfield Insurance