Company lists · Data refreshed September 2026

Top 12 Auto insurance underwriting companies based in the United States

RevenueBase identified 35 company matches for auto insurance underwriting companies associated with the United States as of September 2026 and tracks 3,045 professional contacts across them, including 1,257 with verified work emails and 1,366 with mobile numbers. New York is the largest hub.

This list covers company matches for auto insurance underwriting 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 6, 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 6, 2026 How this list was built
35Companies
3,045Contacts tracked
1,257Verified emails
1,366Mobile numbers
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The 12 largest auto insurance underwriting companies based in the United States

Ranked by team size
Top 12 of 35 company matches for auto insurance underwriting companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWayne, PA, United StatesHQ recorded Sep 6, 20261,001-5,0001,314 contacts →

Exact match

“We aspire to be the very best insurance company at underwriting insurance products for our customers.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
2Exact matchWilmington, DE, United StatesHQ recorded Sep 6, 20265,001-10,000719 contacts →

Exact match

“21st Century Insurance specializes in providing customized auto insurance for each and every customer.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
3Exact matchGoldsboro, NC, United StatesHQ recorded Sep 6, 2026201-500335 contacts →

Exact match

“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
4Exact matchDallas, TX, United StatesHQ recorded Sep 6, 2026201-500105 contacts →

Exact match

“Risk Theory provides nationwide insurance programs which incorporate dynamic coverages, features, and flexible underwriting with dependable, and reasonably priced coverage.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
5Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 6, 2026201-50061 contacts →

Exact match

“At GoAuto Insurance, we redefine what it means to protect what matters most.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
6Exact matchShreveport, LA, United StatesHQ recorded Sep 6, 202651-20042 contacts →

Exact match

“We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
7Exact matchMiami, FL, United StatesHQ recorded Sep 6, 202611-5028 contacts →

Exact match

“At GIC Underwriters our success is based on 30 years of superior service, conservative underwriting and commitment to meeting the needs of our producers.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
8Exact matchMeriden, CT, United StatesHQ recorded Sep 6, 2026201-50028 contacts →

Exact match

“Direct to the customer auto insurance company, founded in 1995.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
9Exact matchSuite 200, United StatesHQ recorded Sep 6, 20261-107 contacts →

Exact match

“Established since October 2005, Southside Insurance specializes in Auto, Home, and Commercial Insurance.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
10Exact matchEphrata, PA, United StatesHQ recorded Sep 6, 202611-506 contacts →

Exact match

“G.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
11Exact matchChesterbrook, PA, United StatesHQ recorded Sep 6, 20261-104 contacts →

Exact match

“Trofee Reinsurance Company provides quota share reinsurance coverage for non-standard auto, commercial auto and general liability business with program markets, hybrid/fronting…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
12Exact matchLisle, IL, United StatesHQ recorded Sep 6, 20261-102 contacts →

Exact match

“From Property/Building insurance to Workers Comp & Auto policies.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase

Showing 12 of 35 auto insurance underwriting companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,257 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Auto insurance underwriting companies based in the United States at a glance

As of Sep 6, 2026
41.3%Verified-email coverage
44.9%Mobile-number coverage
87.0Average contacts per company
11-50Median size (employees)
5.7%Largest-city concentration · New York
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
11
51-200
1
201-500
5
1,001-5,000
2
5,001-10,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 “auto insurance underwriting 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 1,257 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 6, 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.

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

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

RevenueBase identified 35 company matches for auto insurance underwriting 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?

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

Which city has the most auto insurance underwriting companies?

New York leads with 2 company records, followed by Allen (1) and Anaheim (1).

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 1,257 professional contacts with verified work emails tracked across these 35 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 6, 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.