Company lists · Data refreshed September 2026

Top 25 Insurance companies based in the United States

Name: Insurance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 8,411 companies tracked

This directory lists 8,411 insurance companies based in the United States, with contact information for 496,655 professionals and 161,400 business email addresses. The list was updated in September 2026, and Houston is the single most-represented city among the companies listed.

Insurance companies provide insurance products by assessing risk, underwriting coverage, issuing policies, and paying covered claims. This list covers companies that underwrite, issue, or provide insurance policies for individuals, businesses, or other organizations. Ranked by team size, largest first. Data current as of September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

8,411Companies

496,655Contacts tracked

161,400Verified emails

234,125Mobile numbers

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The 25 largest insurance companies based in the United States

Ranked by team size

Top 25 of 8,411 insurance companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to insurance companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Progressive Insurance	Indirect evidence	Mayfield Village, OH, United StatesHQ checked Sep 6, 2026	10001+	39,169 contacts →
	Indirect evidence “Every journey has a beginning, and wherever you are on your career path, we want to help you along the way.” Source: RevenueBase Database · checked Sep 6, 2026
2	Farmers Insurance	Strong evidence	Woodland Hills, CA, United StatesHQ checked Sep 6, 2026	10001+	39,066 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
3	AFLAC	Indirect evidence	Columbus, GA, United StatesHQ checked Sep 6, 2026	10001+	33,480 contacts →
	Indirect evidence “Over 50 Million people worldwide have chosen Aflac because of our commitment to providing customers with the confidence that comes from knowing they have assistance in being…” Source: RevenueBase Database · checked Sep 6, 2026
4	Travelers	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	10001+	32,682 contacts →
	Strong evidence “Travelers provides insurance coverage to protect the things that are important to you – your home, your car, your valuables and your business.” Source: RevenueBase Database · checked Sep 6, 2026
5	Liberty Mutual Insurance	Indirect evidence	Boston, MA, United StatesHQ checked Sep 6, 2026	10001+	30,330 contacts →
	Indirect evidence “At Liberty Mutual, we believe progress happens when people feel secure.” Source: RevenueBase Database · checked Sep 6, 2026
6	AIG	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	10001+	23,438 contacts →
	Strong evidence “American International Group, Inc.(NYSE: AIG) is a leading global insurance organization.” Source: RevenueBase Database · checked Sep 6, 2026
7	American Family Insurance	Strong evidence	Madison, WI, United StatesHQ checked Sep 6, 2026	10001+	17,111 contacts →
	Strong evidence “For more than 90 years, American Family Insurance has built its reputation on sound principles.” Source: RevenueBase Database · checked Sep 6, 2026
8	Zurich North America	Strong evidence	Schaumburg, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	8,988 contacts →
	Strong evidence “Zurich North America is one of the largest providers of insurance solutions and services to businesses and individuals.” Source: RevenueBase Database · checked Sep 6, 2026
9	Mutual Of Omaha	Strong evidence	Omaha, NE, United StatesHQ checked Sep 6, 2026	1,001-5,000	8,621 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
10	Guardian Life	Strong evidence	New York, NY, United StatesHQ checked Sep 6, 2026	5,001-10,000	8,592 contacts →
	Strong evidence “Who we are: Guardian is making a difference in people’s lives across the US as a leading mutual company, providing life and disability insurance, dental and workforce benefits…” Source: RevenueBase Database · checked Sep 6, 2026
11	Country Financial	Strong evidence	Bloomington, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	7,402 contacts →
	Strong evidence “COUNTRY Financial® provides insurance and financial services for over a million households and businesses across 19 states.” Source: RevenueBase Database · checked Sep 6, 2026
12	CNA Insurance	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	6,984 contacts →
	Indirect evidence “CNA is one of the largest U.S.” Source: RevenueBase Database · checked Sep 6, 2026
13	Erie Insurance Group	Strong evidence	Erie, PA, United StatesHQ checked Sep 6, 2026	5,001-10,000	6,321 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
14	Kemper	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	5,419 contacts →
	Indirect evidence “The Kemper family of companies is one of the nation’s leading specialized insurers.” Source: RevenueBase Database · checked Sep 6, 2026
15	Auto-Owners Insurance	Indirect evidence	Lansing, MI, United StatesHQ checked Sep 6, 2026	5,001-10,000	5,282 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 6, 2026
16	Amwins	Strong evidence	Charlotte, NC, United StatesHQ checked Sep 6, 2026	5,001-10,000	4,926 contacts →
	Strong evidence “Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.” Source: RevenueBase Database · checked Sep 6, 2026
17	The Cincinnati Insurance Companies	Strong evidence	Fairfield, OH, United StatesHQ checked Sep 6, 2026	1,001-5,000	4,539 contacts →
	Strong evidence “The Cincinnati Insurance Company, operating since 1950, stands among the nation's top 25 property casualty insurer groups based on net written premiums.” Source: RevenueBase Database · checked Sep 6, 2026
18	Sentry	Strong evidence	Stevens Point, WI, United StatesHQ checked Sep 6, 2026	5,001-10,000	3,963 contacts →
	Strong evidence “Sentry Insurance got its start in 1904, when members of the Wisconsin Retail Hardware Association formed their own insurance company.” Source: RevenueBase Database · checked Sep 6, 2026
19	Shelter Insurance Companies	Strong evidence	Columbia, MO, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,912 contacts →
	Strong evidence “Shelter Insurance® is a property casualty insurance company offering auto and home insurance in addition to several other insurance products, including: Life Insurance Renters…” Source: RevenueBase Database · checked Sep 6, 2026
20	Goosehead Insurance	Strong evidence	Westlake, TX, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,743 contacts →
	Strong evidence “Goosehead Insurance is an independent personal lines insurance company serving the continental United States.” Source: RevenueBase Database · checked Sep 6, 2026
21	Mercury Insurance	Indirect evidence	Brea, CA, United StatesHQ checked Sep 6, 2026	5,001-10,000	3,186 contacts →
	Indirect evidence “At Mercury, we have been guided by our purpose to help people reduce risk and overcome unexpected events for more than 60 years.” Source: RevenueBase Database · checked Sep 6, 2026
22	Amica Insurance	Indirect evidence	Lincoln, RI, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,040 contacts →
	Indirect evidence “When you look at Amica, you’ll see we’re different.” Source: RevenueBase Database · checked Sep 6, 2026
23	Mcgriff	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,021 contacts →
	Indirect evidence “When it comes to protecting what matters most in business and everyday life, at McGriff we believe our clients should never settle for less than the best.” Source: RevenueBase Database · checked Sep 6, 2026
24	Arch Insurance Group INC	Strong evidence	Jersey City, NJ, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,704 contacts →
	Strong evidence “Arch Insurance Group Inc, a division of Arch Capital Group Ltd.(ACGL), is a market-leading specialty insurer.” Source: RevenueBase Database · checked Sep 6, 2026
25	Medical Mutual	Strong evidence	Cleveland, OH, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,667 contacts →
	Strong evidence “Founded in 1934, Medical Mutual is the oldest and one of the largest health insurance companies based in Ohio.” Source: RevenueBase Database · checked Sep 6, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: insurance companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names insurance companies.
Partial evidence: Its own public description names part of insurance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name insurance companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 8,411 insurance companies based in the United States

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Insurance companies based in the United States at a glance

As of Sep 6, 2026

32.5%Verified-email coverage

47.1%Mobile-number coverage

59.0Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Houston

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

5,010

11-50

2,371

51-200

603

201-500

176

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

148,8150–30

10,45631–60

10961–90

5390–180

1,967180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among insurance companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “insurance companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names insurance companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among insurance companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 161,400 across the full list. 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 6, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Insurance companies by metro

Frequently asked

How many insurance companies are based in the United States?

The directory contains 8,411 insurance companies based in the United States.

Which city has the most insurance companies?

Houston is the single most-represented city among the companies on the list.

How can I find contacts at insurance companies?

The directory includes 496,655 professional contacts and 161,400 business email addresses for insurance companies.

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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 Smart Search, 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.