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The US property and casualty (P&C) insurance market has continued to show impressive strength amid ongoing headwinds. From economic uncertainty and rising inflation to evolving consumer needs and geopolitical shifts, the sector has proven its resilience once again.

In 2024, US carriers wrote more in direct premiums than ever before, contributing significantly to the $1.8tn global industry. That figure is expected to grow at a compound annual growth rate (CAGR) of 5.5% through to 2032—driven in large part by the industry's top players.

So who’s leading the charge in 2025? Let’s dive into the list of the ten largest P&C insurers in the US, ranked by direct premiums written (DPW) in 2024.

Here are the 10 largest P&C insurance companies in the US, ranked by premiums:

Direct Premiums Written: $109.0bn

State Farm retains its spot at the top of the leaderboard, writing $109.0bn in direct premiums in 2024—a significant jump from $93.8bn the previous year. The Bloomington, Illinois-based mutual has consistently leveraged its vast agent network, strong brand loyalty, and consumer-first strategy to dominate the personal lines market.

Direct Premiums Written: $75.9bn

Progressive continues its strong upward trajectory, climbing to $75.9bn in direct premiums. Known for its aggressive pricing, digital-first approach, and broad distribution through both direct and independent channels, the Ohio-based carrier remains a powerhouse in the auto and home insurance segments.

Direct Premiums Written: $63.3bn

Berkshire Hathaway, home to GEICO and several other insurance businesses, wrote $63.3bn in P&C premiums in 2024. Warren Buffett’s conglomerate benefits from strong underwriting results and a diversified book that spans personal, commercial, and specialty lines.

Direct Premiums Written: $55.9bn

Allstate continues to climb, with $55.9bn in premiums written last year. With a sharp focus on technology investment and distribution transformation, the Northbrook, Illinois-based insurer is pushing hard to stay competitive in a tightening market.

Direct Premiums Written: $44.1bn

Liberty Mutual posted $44.1bn in DPW in 2024, slightly down from the year prior. Still, the Boston-based carrier holds firm in the top five, buoyed by its global presence and a broad portfolio spanning personal and commercial lines.

Direct Premiums Written: $41.9bn

Travelers saw solid growth in 2024, increasing its DPW from $38.6bn to $41.9bn. The New York-based giant is known for its strength in commercial insurance and risk management services, particularly with middle-market and large corporate clients.

Direct Premiums Written: $36.1bn

USAA continues to serve military members and their families with a focused model that drives loyalty and retention. With $36.1bn in DPW, the member-owned carrier has expanded steadily across both personal auto and homeowners insurance.

Direct Premiums Written: $33.1bn

Chubb reported $33.1bn in direct premiums for 2024. Known for its strength in high-net-worth personal lines, global commercial capabilities, and consistent underwriting discipline, Chubb remains a key global player.

Direct Premiums Written: $28.3bn

Farmers wrote $28.3bn in premiums in 2024, continuing a trend of modest growth. Backed by its extensive network of exclusive and independent agents, Farmers maintains a significant presence in personal lines across the US.

Direct Premiums Written: $18.6bn

Zurich rounds out the top 10 with $18.6bn in US P&C premiums written. While its global headquarters are in Switzerland, the company’s US operations play a vital role in its commercial insurance strategy, serving businesses across a range of industries.

Whether it’s State Farm’s scale or Progressive’s tech-driven distribution, these market leaders are doing more than just writing premiums—they’re shaping the future of the US P&C market. Understanding who’s growing, who’s innovating, and who’s doubling down on strategy gives you an edge in a fast-moving environment.

At Insurance Insider US, we deliver the intelligence behind the numbers. From exclusive data insights to in-depth regulatory coverage and industry forecasts, we provide the tools you need to stay competitive and informed in 2025 and beyond.

All data sourced from S&P CAP IQ, 2025