Allstate, Geico, Progressive and State Farm are the largest auto insurance companies in the U.S. Together they control almost 50% of the market share for private passenger auto insurance. If you're looking for car insurance quotes, you have many additional choices. Here are the 50 biggest car insurance companies.

Largest auto insurance companies

Rank Insurance company Market share
1 State Farm 18.25%
2 Geico 11.89%
3 Allstate 9.69%
4 Progressive 9.14%
5 USAA 5.44%
6 Liberty Mutual 5.02%
7 Farmers 4.80%
8 Nationwide 3.56%
9 American Family 1.87%
10 Travelers 1.81%
11 Auto Club Exchange 1.28%
12 Erie Insurance 1.27%
13 CSAA Insurance (AAA) 1.18%
14 Hartford Financial Services 1.16%
15 Mercury 1.13%
16 MetLife 1.09%
17 National General 1.04%
18 Auto-Owners Insurance 0.95%
19 Allied 0.95%
20 Mapfre 0.80%
21 Auto Club Insurance Association 0.77%
22 Infinity 0.58%
23 Kemper 0.58%
24 Amica Mutual 0.56%
25 COUNTRY Financial 0.48%
26 Hanover Insurance 0.47%
27 NJM Insurance 0.44%
28 Southern Farm Bureau 0.42%
29 Sentry Insurance 0.39%
30 Shelter Insurance 0.38%
31 Alfa Mutual 0.38%
32 Ameriprise Financial 0.34%
33 Chubb 0.33%
34 Texas Farm Bureau Insurance 0.31%
35 Tennessee Farmers Insurance 0.29%
36 Grange Mutual 0.27%
37 Plymouth Rock of New Jersey 0.27%
38 Cincinnati Financial 0.27%
39 Loya Insurance 0.27%
40 State Auto Insurance 0.24%
41 Home State Insurance 0.24%
42 Kentucky Farm Bureau 0.24%
43 North Carolina Farm Bureau) 0.24%
44 American International Group 0.23%
45 Farm Bureau Mutual 0.23%
46 Safety Insurance 0.22%
47 Arbella Insurance 0.21%
48 Consolidated Lloyds 0.21%
49 American National Insurance 0.21%
50 Horace Mann 0.20%
Source: S&P Global Market Intelligence, based on 2016 direct premiums written