Company lists · Data refreshed September 2026

Top 25 Group insurance companies based in the United States

Name: Group 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 16, 2026 4,431 companies tracked

RevenueBase identified 4,431 company matches for group insurance companies associated with the United States as of September 2026 and tracks 272,820 professional contacts across them, including 87,477 with verified work emails. Houston is the largest hub.

This list covers company matches for group insurance companies 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 16, 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 16, 2026 How this list was built

4,431Companies

272,820Contacts tracked

87,477Verified emails

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The 25 largest group insurance companies based in the United States

Ranked by team size

Top 25 of 4,431 company matches for group insurance companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 16, 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 16, 2026 · View company records in RevenueBase
2	AFLAC	Exact match	Columbus, GA, United StatesHQ recorded Sep 16, 2026	10001+	33,480 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Anthem, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 16, 2026	n/a	18,559 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	American Family Insurance	Exact match	Madison, WI, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
5	Unitedhealthcare	Exact match	Minnetonka, MN, United StatesHQ recorded Sep 16, 2026	10001+	13,144 contacts →
	Exact match “When it comes to your health, everything matters.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	UNUM	Exact match	Chattanooga, TN, United StatesHQ recorded Sep 16, 2026	10001+	10,841 contacts →
	Exact match “Since our founding in 1848, Unum has been a leader in the employee benefits business through innovation, integrity and an unwavering commitment to our customers.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	Marsh Mclennan Agency	Exact match	White Plains, NY, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
8	Zurich North America	Exact match	Schaumburg, IL, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
9	Mutual Of Omaha	Exact match	Omaha, NE, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
10	Colonial Life	Exact match	Columbia, SC, United StatesHQ recorded Sep 16, 2026	1,001-5,000	7,742 contacts →
	Exact match “Colonial Life & Accident Insurance Company, a subsidiary of Unum Group, provides financial protection benefits to America’s workers and their families when the unexpected happens.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	American Income Life Insurance Company	Exact match	Waco, TX, United StatesHQ recorded Sep 16, 2026	5,001-10,000	7,555 contacts →
	Exact match “American Income Life is a major provider of supplemental insurance benefits to working families through relationships established with labor unions, credit unions, and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Kemper	Exact match	Chicago, IL, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
13	The Standard	Exact match	Portland, OR, United StatesHQ recorded Sep 16, 2026	5,001-10,000	4,348 contacts →
	Exact match “The Standard is a leading provider of workplace benefits including group and individual disability insurance, group life and accidental death and dismemberment insurance, group…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Sentry	Exact match	Stevens Point, WI, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
15	Onedigital	Exact match	Atlanta, GA, United StatesHQ recorded Sep 16, 2026	5,001-10,000	3,478 contacts →
	Exact match “OneDigital’s team of fierce advocates helps businesses and individuals achieve their aspirations of health, success and financial security.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Medical Mutual	Exact match	Cleveland, OH, United StatesHQ recorded Sep 16, 2026	1,001-5,000	2,667 contacts →
	Exact match “Founded in 1934, Medical Mutual is the oldest and one of the largest health insurance companies based in Ohio.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	CNO Financial Group	Exact match	Carmel, IN, United StatesHQ recorded Sep 16, 2026	1,001-5,000	2,298 contacts →
	Exact match “CNO Financial Group, Inc.(NYSE: CNO) secures the future of middle-income America.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	American Fidelity	Exact match	Oklahoma City, OK, United StatesHQ recorded Sep 16, 2026	1,001-5,000	2,039 contacts →
	Exact match “American Fidelity is more than an insurance company.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Acuity Insurance	Exact match	Sheboygan, WI, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,647 contacts →
	Exact match “Acuity Insurance is a leading provider of insurance solutions, delivering exceptional coverage and customer service to individuals and businesses in over 30 states.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	HMSA	Exact match	Honolulu, HI, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,311 contacts →
	Exact match “The Hawaii Medical Service Association (HMSA), an independent licensee of the Blue Cross and Blue Shield Association, is a reliable name in Hawaii health care.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Trustmark	Exact match	Lake Forest, IL, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,001 contacts →
	Exact match “Trustmark is a national employee benefits company offering specialized expertise in voluntary benefits, self-funded health benefit plan design and administration, and employee…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	Western National Insurance	Exact match	Edina, MN, United StatesHQ recorded Sep 16, 2026	501-1,000	825 contacts →
	Exact match “Celebrating 125 years of service, Western National Insurance is a super-regional group of property-and-casualty insurance companies providing personal and commercial coverage in…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	Encova Insurance	Exact match	Columbus, OH, United StatesHQ recorded Sep 16, 2026	1,001-5,000	824 contacts →
	Exact match “Encova Insurance provides commercial, auto and home insurance.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	Keenan	Exact match	Torrance, CA, United StatesHQ recorded Sep 16, 2026	501-1,000	744 contacts →
	Exact match “Keenan provides innovative insurance and financial solutions for schools, public agencies and health care organizations.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Bristol West Insurance Group	Exact match	Independence, OH, United StatesHQ recorded Sep 16, 2026	1,001-5,000	718 contacts →
	Exact match “Bristol West®: The Beginning It all started in Florida in 1973.” Recorded in the RevenueBase company graph · Sep 16, 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 “group insurance companies”. 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 4,431 group insurance companies based in the United States

See the full list, filter by size, metro and specialty, and access 87,477 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Group insurance companies based in the United States at a glance

As of Sep 16, 2026

32.1%Verified-email coverage

61.6Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

2,694

11-50

1,217

51-200

313

201-500

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 4,431 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 “group insurance companies” 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 87,477 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 16, 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.

Group insurance companies 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 “group insurance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many group insurance companies are there based in the United States?

RevenueBase identified 4,431 company matches for group insurance companies 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 group insurance companies?

Houston leads with 64 company records, followed by Dallas (43) and Los Angeles (40).

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 87,477 professional contacts with verified work emails tracked across these 4,431 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 16, 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.