Top 5 car insurance companies in USA

According to recent data from multiple sources—including NAIC and S&P Global—the following are the five largest car insurance companies in the U.S. by market share or premiums written:

1. State Farm – Around 18–19% market share, ValuePenguin, Business Insider, MoneyGeek. Car insurance.comADV Ratings

2. Progressive – Approximately 15–17% ValuePenguinBusiness InsiderMoneyGeek.comCarinsurance.com

3. GEICO (Berkshire Hathaway) – Around 12–13% ValuePenguinBusiness InsiderMoneyGeek.comADV Ratings

4. Allstate – About 10–10.5% ValuePenguinBusiness InsiderADV RatingsAP News

5. USAA – Roughly 6% market share, though it's only available to military members and their families. ValuePenguinBusiness InsiderCarinsurance.comMoneyGeek.com

These five companies dominate the U.S. auto insurance market with over 60% combined market share.

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Top 5 by Customer Satisfaction (Ratings-Based)

If you're more interested in which companies offer the best customer experiences, here's how some recent rankings stack up:

• U.S. News & World Report (as of Jan 27, 2025):

  1. USAA

  2. Auto-Owners

  3. Nationwide

  4. State Farm

  5. Geico U.S. News

• The Zebra’s 2024 Survey (by customer satisfaction ratings):

  1. USAA

  2. Erie Insurance

  3. American Family

  4. AAA

  5. State Farm The Zebra

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Summary Table

Metric	Top 5 Companies (2025)
By Market Share	1. State Farm • 2. Progressive • 3. Geico • 4. Allstate • 5. USAA
By Customer Satisfaction	Varies—often includes USAA, Auto-Owners, Nationwide, Erie, American Family, State Farm, Geico, depending on the ranking

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Final Thoughts