Company lists · Data refreshed September 2026

Top 25 Property and casualty insurers based in the United States

Name: Property and casualty insurers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 9,179 companies tracked

RevenueBase identified 9,179 company matches for property and casualty insurers associated with the United States as of September 2026 and tracks 527,972 professional contacts across them, including 186,274 with verified work emails. Houston is the largest hub.

This list covers company matches for property and casualty insurers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

9,179Companies

527,972Contacts tracked

186,274Verified emails

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The 25 largest property and casualty insurers based in the United States

Ranked by team size

Top 25 of 9,179 company matches for property and casualty insurers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Progressive Insurance	Exact match	Mayfield Village, OH, United StatesHQ recorded Sep 20, 2026	10001+	39,169 contacts →
	Exact match “Every journey has a beginning, and wherever you are on your career path, we want to help you along the way.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Farmers Insurance	Exact match	Woodland Hills, CA, United StatesHQ recorded Sep 20, 2026	10001+	39,066 contacts →
	Exact match “The companies comprising the Farmers Insurance Group of Companies® currently make up one of the country's largest insurers of vehicles, homes and small businesses, and provide a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Travelers	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	32,682 contacts →
	Exact match “Travelers provides insurance coverage to protect the things that are important to you – your home, your car, your valuables and your business.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Liberty Mutual Insurance	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	10001+	30,330 contacts →
	Exact match “At Liberty Mutual, we believe progress happens when people feel secure.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	AIG	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	10001+	23,438 contacts →
	Exact match “American International Group, Inc.(NYSE: AIG) is a leading global insurance organization.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	American Family Insurance	Exact match	Madison, WI, United StatesHQ recorded Sep 20, 2026	10001+	17,111 contacts →
	Exact match “For more than 90 years, American Family Insurance has built its reputation on sound principles.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	State Farm Agent	Exact match	Bloomington, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	10,979 contacts →
	Exact match “At State Farm®, our mission is to help people manage the risks of everyday life, recover from the unexpected, and realize their dreams.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Marsh Mclennan Agency	Exact match	White Plains, NY, United StatesHQ recorded Sep 20, 2026	10001+	9,086 contacts →
	Exact match “Marsh McLennan Agency, a business of Marsh (NYSE: MRSH), is a leading provider of business insurance, employee health & benefits, retirement & wealth, and private client insurance…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Zurich North America	Exact match	Schaumburg, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	8,988 contacts →
	Exact match “Zurich North America is one of the largest providers of insurance solutions and services to businesses and individuals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Mutual Of Omaha	Exact match	Omaha, NE, United StatesHQ recorded Sep 20, 2026	1,001-5,000	8,621 contacts →
	Exact match “Founded in 1909, Mutual of Omaha is a highly-rated, Fortune 300 organization offering a variety of insurance and financial products for individuals, businesses and groups…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Country Financial	Exact match	Bloomington, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	7,402 contacts →
	Exact match “COUNTRY Financial® provides insurance and financial services for over a million households and businesses across 19 states.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	CNA Insurance	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	6,984 contacts →
	Exact match “CNA is one of the largest U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	FM	Exact match	Johnston, RI, United StatesHQ recorded Sep 20, 2026	5,001-10,000	6,351 contacts →
	Exact match “For nearly 200 years, FM has empowered businesses worldwide to manage risk, prevent loss, and build resilience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Erie Insurance Group	Exact match	Erie, PA, United StatesHQ recorded Sep 20, 2026	5,001-10,000	6,321 contacts →
	Exact match “From our modest roots starting in 1925 as a Pennsylvania auto insurer, we've grown to become a multi-line insurance company, offering auto, home, business and life insurance…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Kemper	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,419 contacts →
	Exact match “The Kemper family of companies is one of the nation’s leading specialized insurers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Auto-Owners Insurance	Exact match	Lansing, MI, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,282 contacts →
	Exact match “We are a team of hard working associates and local, independent agents who are proud to be among the nation's largest insurers of Life, Home, Car, and Business; and consistently…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	The Hanover Insurance Group	Exact match	Worcester, MA, United StatesHQ recorded Sep 20, 2026	5,001-10,000	5,132 contacts →
	Exact match “Rooted in our commitment to be with you, every step, The Hanover Insurance Group, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Amwins	Exact match	Charlotte, NC, United StatesHQ recorded Sep 20, 2026	5,001-10,000	4,926 contacts →
	Exact match “Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Amtrust Financial Services, INC	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	4,734 contacts →
	Exact match “AmTrust Financial Services, Inc, through its subsidiaries, operates as a multinational property and casualty insurance company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	The Cincinnati Insurance Companies	Exact match	Fairfield, OH, United StatesHQ recorded Sep 20, 2026	1,001-5,000	4,539 contacts →
	Exact match “The Cincinnati Insurance Company, operating since 1950, stands among the nation's top 25 property casualty insurer groups based on net written premiums.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Sentry	Exact match	Stevens Point, WI, United StatesHQ recorded Sep 20, 2026	5,001-10,000	3,963 contacts →
	Exact match “Sentry Insurance got its start in 1904, when members of the Wisconsin Retail Hardware Association formed their own insurance company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Shelter Insurance Companies	Exact match	Columbia, MO, United StatesHQ recorded Sep 20, 2026	1,001-5,000	3,912 contacts →
	Exact match “Shelter Insurance® is a property casualty insurance company offering auto and home insurance in addition to several other insurance products, including: Life Insurance Renters…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Everest	Exact match	Warren, NJ, United StatesHQ recorded Sep 20, 2026	1,001-5,000	3,411 contacts →
	Exact match “Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Mercury Insurance	Exact match	Brea, CA, United StatesHQ recorded Sep 20, 2026	5,001-10,000	3,186 contacts →
	Exact match “At Mercury, we have been guided by our purpose to help people reduce risk and overcome unexpected events for more than 60 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Markel	Exact match	Glen Allen, VA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	3,151 contacts →
	Exact match “As the insurance operations within the Markel Group Inc.(NYSE: MKL), we leverage a broad array of capabilities and expertise to create intelligent solutions for the most complex…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “property and casualty insurers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,179 property and casualty insurers based in the United States

See the full list, filter by size, metro and specialty, and access 186,274 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Property and casualty insurers based in the United States at a glance

As of Sep 20, 2026

35.3%Verified-email coverage

57.5Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

5,462

11-50

2,697

51-200

574

201-500

172

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,179 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “property and casualty insurers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 186,274 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Property and casualty insurers by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “property and casualty insurers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many property and casualty insurers are there based in the United States?

RevenueBase identified 9,179 company matches for property and casualty insurers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Progressive Insurance tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most property and casualty insurers?

Houston leads with 119 company records, followed by New York (112) and Miami (88).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 186,274 professional contacts with verified work emails tracked across these 9,179 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.