Here are the largest auto insurance companies in Maryland, based on premiums for policies sold in the state in 2018.
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Largest auto insurance companies in Maryland
| Rank in Maryland | Company | Market share % in Maryland |
|---|---|---|
| 1 | Berkshire Hathaway Inc. | 24.43 |
| 2 | State Farm | 18.33 |
| 3 | Allstate Corp. | 11.58 |
| 4 | USAA | 8.94 |
| 5 | Erie Insurance | 7.89 |
| 6 | Progressive | 6.78 |
| 7 | Nationwide | 6.47 |
| 8 | Liberty Mutual | 3.29 |
| 9 | Travelers | 1.78 |
| 10 | Maryland Automobile Insurance Fund | 1.57 |
| 11 | Agency Insurance Co. of MD Inc. | 0.93 |
| 12 | The Hartford | 0.92 |
| 13 | Elephant Insurance Co. | 0.64 |
| 14 | CSAA Insurance Exchange | 0.63 |
| 15 | Farmers Insurance | 0.62 |
| 16 | MetLife | 0.56 |
| 17 | State Auto | 0.51 |
| 18 | Amica | 0.48 |
| 19 | American Family Insurance | 0.45 |
| 20 | Donegal | 0.43 |
| 21 | Brethren Mutual Insurance Co. | 0.36 |
| 22 | The Cincinnati Insurance Cos. | 0.31 |
| 23 | Chubb | 0.31 |
| 24 | Penn National Insurance | 0.26 |
| 25 | Kemper | 0.24 |
| 26 | Selective | 0.24 |
| 27 | Mutual Benefit | 0.2 |
| 28 | National General Holdings Corp. | 0.14 |
| 29 | Markel | 0.1 |
| 30 | California Casualty | 0.09 |
| 31 | Cumberland Insurance Group | 0.07 |
| 32 | Horace Mann | 0.07 |
| 33 | PURE | 0.07 |
| 34 | Sentry | 0.06 |
| 35 | Root Insurance Co. | 0.05 |
| 36 | American National | 0.04 |
| 37 | Tokio Marine | 0.03 |
| 38 | AIG | 0.03 |
| 39 | General Electric Co. | 0.03 |
| 40 | Rider Insurance Co. | 0.02 |
| 41 | Assurant | 0.02 |
| 42 | Munich Re | 0.02 |
| Source: S&P Global Market Intelligence, based on premiums written in 2018 for private passenger auto insurance. | ||