Review the Buckeye State insurers that underwrite the most property and casualty policies. Carriers that have the largest market share do not necessarily offer the cheapest rates, but they are typically very reliable and stable companies. From information provided by the Ohio Department of Insurance, shown below is the most recent data for all available types of coverage.

Auto Insurance (Private Passenger)

1.  19.7% – State Farm

2.  13.5% – Progressive

3.  10.3% – Allstate

4.  8.0% – Nationwide

5.  7.0% – Berkshire Hathaway (Geico)

6.  5.2% – Grange

7.  4.7% – Liberty Mutual

8.  3.3% – Erie

9.  3.0% – USAA

10.  2.6% – American Family

11.  2.5% – Westfield

12.  2.0% – Cincinnati Financial

13.  1.8% – Farmers

14.  1.6% – Auto Owners

15.  1.3% – Travelers

16.  1.1% – Motorists Mutual

17.  1.1% – Safe Auto

18.  1.0% – Ohio Mutual

19.  1.0% – Western Reserve

20.  1.0% – State Auto

21.  0.7% – Metropolitan (MetLife)

22.  0.6% – Hartford

23.  0.5% – Pekin

24.  0.4% – Alfa

25.  0.4% – Central Mutual

26.  0.4% – Utica

27.  0.4% – First Acceptance

28.  0.3% – Sentry

29.  0.3% – Celina

30.  0.3% – American National Financial Group

Homeowners Insurance (Multi-Peril)

1.  21.5% – State Farm

2.  10.9% – Allstate

3.  8.3% – Liberty Mutual

4.  8.1% – Nationwide

5.  5.7% – Grange

6.  5.1% – Erie

7.  4.0% – Westfield

8.  3.9% – Cincinnati Financial

9.  3.3% – USAA

10.  3.1% – American Family

Farmowners (Multi-Peril)

1.  22.2% – Nationwide

2.  13.4% – Ohio Mutual

3.  8.5% – Hastings Mutual

4.  8.3% – Westfield Group

5.  7.6% – Western Reserve Group

6.  5.7% – State Farm

7.  5.3% – Grange

8.  4.5% – Auto Owners

9.  3.5% – Mennonite Mutual

10.  3.4% – Celina Group

Commercial Lines

1.  8.3% – Cincinnati Financial

2.  6.0% – Liberty Mutual

3.  5.4% – Travelers

4.  5.1% – Chubb

5.  4.6% – Westfield Group

6.  4.4% – International Group

7.  4.4% – CNA

8.  3.7% – Nationwide

9.  3.3% – Zurich

10.  2.3% – Auto Owners

11.  2.1% – Erie

12.  2.1% – Motorists Mutual

13.  2.1% – State Farm

14.  2.0% – Tokio Marine

15.  1.8% – Berkshire Hathaway

Commercial Auto

1.  9.1% – Cincinnati Financial

2.  7.7% – Progressive

3.  6.7% – Westfield

4.  5.6% – Nationwide

5.  5.0% – Travelers

6.  4.4% – Motorists Mutual

7.  3.5% – Erie

8.  3.5% – Auto-Owners

9.  3.3% – Zurich

10.  3.2% – Liberty Mutual

11.  3.2% – Old Republic

12.  2.9% – Acuity Mutual

13.  2.5% – American Financial

14.  2.1% – Berkshire Hathaway

15.  2.1% – Grange Mutual

Commercial General Liability

1.  9.4% – Chubb

2.  8.4% – American International

3.  7.9% – Cincinnati Financial

4.  5.5% – Travelers

5.  4.4% – Zurich

6.  4.2% – CNA

7.  3.8% – XL AMER

8.  3.1% – Liberty Mutual

9.  2.8% – Nationwide

10.  2.7% – Tokio Marine

11.  2.1% – Westfield

12.  2.0% – Motorists Mutual

13.  1.8% – Berkshire Hathaway

14.  1.8% – WR Berkley

15.  1.6% – American Financial

Fire And Allied Line

1.  7.4% – FM Global

2.  6.9% – American International

3.  6.3% – Assurant

4.  6.2% – Zurich

5.  5.9% – Cincinnati Financial

6.  5.5% – Travelers

7.  5.4% – Farmers

8.  3.7% – Munich

9.  3.6% – Auto Owners

10.  3.4% – State Auto

11.  3.3% – Nationwide

12.  3.1% – Ohio Mutual

13.  2.9% – Liberty Mutual

14.  2.7% – Grange

15.  2.0% – Westfield

Commercial And Multiple Peril

1.  14.1% – Cincinnati Financial

2.  8.5% – Westfield

3.  6.5% – Travelers

4.  5.3% – Erie

5.  5.0% – Liberty Mutual

6.  5.0% – Nationwide

7.  4.4% – State Farm

8.  4.3% – Auto Owners

9.  3.6% – Chubb

10.  3.2% – Tokio Marine Holdings

11.  2.7%  – CNA

12.  2.3% – Motorists Mutual

13.  2.1% – Grange

14.  1.9% – Allstate

15.  1.9% – Hartford

Medical Professional Liability

1.  22.6% – Berkshire Hathaway

2.  18.2% – Doctors CO Group

3.  11.3% – Coverys

4.  10.4% – ProAssurance

5.  7.5% – CNA

6.  2.9% – Cincinnati

7.  2.9% – Fairfax Financial Group

8.  2.5% – Intact Financial Group

9.  2.3% – NCMIC Group

10.  1.8% – Liberty Mutual

11.  1,8% – Chubb

12.  1.5% –  Health Care Industry Liab.

13.  1.5% – Allegheny Group

14.  1.1% – American Express

15.  0.9% – Norcal Group

Ohio insurers with larger market shares don’t necessarily offer the lowest rates. However, generally, their prices are very competitive, and policies are available throughout the entire state. Compare car insurance companies in Ohio, including commercial risks.