The 50 Biggest Auto Insurance Companies

Here is a list of the largest U.S. auto insurers based on market share of direct premiums for private passenger auto insurance. State Farm Group tops the list with a market share of more than 16%. GEICO, a subsidiary of Berkshire Hathaway Inc, is the second largest auto insurance company in the United States by market share.

Rank	Company	Market share %
1	State Farm	16.2
2	GEICO	13.6
3	Progressive	13.3
4	Allstate Corp	10.4
5	USAA	6.3
6	Farmers Insurance	4.9
7	Liberty Mutual	4.7
8	Nationwide	2.3
9	American Family Insurance	2.1
10	Travelers	2.0
11	Kemper	1.5
12	Erie Insurance	1.4
13	Auto Club Exchange	1.4
14	Auto-owners Group	1.3
15	National General	1.3
16	CSAA Insurance Exchange	1.1
17	Mercury Insurance	1.0
18	Auto Club Insurance Association	0.8
19	Hartford Fire & Casualty	0.7
20	Amica	0.5
21	COUNTRY Financial	0.6
22	The Hanover Insurance Group	0.5
23	MAPFRE	0.5
24	Shelter Insurance	0.4
25	Universal Insurance Holdings Inc	0.4
26	Southern Farm Bureau Casualty	0.4
27	American International Group (AIG)	0.4
28	New Jersey Manufacturers (NJM)	0.4
29	The Cincinnati Insurance Cos	0.4
30	Tennessee Farmers Insurance Companies	0.4
31	Alfa Mutual Group	0.4
32	Chubb	0.3
33	Texas Farm Bureau Insurance	0.3
34	State Auto	0.3
35	Farm Bureau Financial Services	0.3
36	North Carolina Farm Bureau Insurance	0.3
37	Kentucky Farm Bureau	0.3
38	Plymouth Rock of New Jersey	0.3
39	Grange Insurance	0.3
40	Heritage Insurance	0.3
41	Root Car Insurance	0.3
42	American National	0.2
43	Markel	0.2
44	Loya Insurance Group	0.2
45	Westfield Insurance	0.2
46	Citizens Property Insurance Corp	0.2
47	Michigan Farm Bureau	0.2
48	Consumers County Mutual	0.2
49	Home State Insurance	0.2
50	Plymouth Rock Co	0.2
51	Safety Insurance	0.2
52	Arbella Insurance Group	0.2

Source: S&P Global Market Intelligence 2021