State Farm, Geico, Progressive and Allstate are the largest auto insurance companies in the U.S. Together they control just over 50% of the market for private passenger auto insurance.

    More: Compare Allstate, Geico, Progressive and State Farm

Here are the 50 biggest car insurance companies and how they're owned:

  • Mutual company: Owned by its policyholders
  • Stock company: Publicly held
  • Reciprocal exchange: A group of insurers that spread the risk among one another

The largest auto insurance companies

Rank Company Ownership form Market share
1 State Farm Mutual company

18.18%

2 Berkshire Hathaway Inc. (Geico) Stock company

12.87%

3 Progressive Stock company

9.91%

4 Allstate Corp. Stock company

9.32%

5 USAA Reciprocal exchange

5.72%

6 Liberty Mutual Stock company

5.04%

7 Farmers Insurance Group Reciprocal exchange

4.51%

8 Nationwide Mutual Group Mutual company

3.19%

9 Travelers Cos. Stock company

1.91%

10 American Family Insurance Group Stock company

1.90%

11 Auto Club Exchange Reciprocal exchange

1.35%

12 Erie Insurance Reciprocal exchange

1.29%

13 CSAA Insurance Exchange Reciprocal exchange

1.22%

14 National General Holdings Corp. Stock company

1.15%

15 Mercury General Corp. Stock company

1.07%

16 Auto-Owners Insurance Mutual company

1.06%

17 MetLife Stock company

1.05%

18 Hartford Financial Services Stock company

1%

19 Auto Club Insurance Association Reciprocal exchange

0.77%

20 MAPFRE Stock company

0.73%

21 Kemper Corp. Stock company

0.61%

22 Amica Mutual Insurance Co. Mutual company

0.57%

23 Infinity P&C Corp. Stock company

0.54%

24 COUNTRY Financial Mutual company

0.48%

25 Hanover Insurance Group Stock company

0.48%

26 NJM Insurance Stock company

0.44%

27 Southern Farm Bureau Casualty Stock company

0.44%

28 Sentry Insurance Mutual company

0.41%

29 Shelter Insurance Mutual company

0.39%

30 Alfa Mutual Group Mutual company

0.39%

31 Ameriprise Financial Stock company

0.33%

32 Chubb Ltd. Stock company

0.32%

33 Texas Farm Bureau Insurance Cos. Stock company

0.30%

34 Tennessee Farmers Insurance Cos. Mutual company

0.28%

35 Cincinnati Financial Corp. Stock company

0.27%

36 Plymouth Rock of New Jersey Reciprocal exchange

0.26%

37 Grange Mutual Casualty Co. Mutual company

0.25%

38 Kentucky Farm Bureau Mutual Insurance Co. Mutual company

0.25%

39 North Carolina Farm Bureau Insurance Mutual company

0.25%

40 State Auto Insurance Cos. Mutual company

0.23%

41 Farm Bureau Financial Services Stock company

0.22%

42 Loya Insurance Stock company

0.21%

43 American National Insurance Stock company

0.21%

44 Safety Insurance Group Inc. Stock company

0.20%

45 Horace Mann Educators Corp. Stock company

0.19%

46 Markel Corp. Stock company

0.19%

47 Arbella Insurance Mutual company

0.19%

48 Michigan Farm Bureau Mutual company

0.18%

49 Westfield Insurance Mutual company

0.18%

50 Plymouth Rock Co. Stock company

0.17%

Source: S&P Global Market Intelligence, based on direct premiums written in 2017 for private passenger auto insurance


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