Company lists · Data refreshed September 2026

Top 25 Actuary consulting firms based in the United States

Name: Actuary consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 926 companies tracked

RevenueBase identified 926 actuary consulting firms headquartered in the United States as of September 2026 and tracks 106,852 professional contacts across them, including 55,585 with verified work emails. New York is the largest hub.

This list covers actuary consulting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

926Companies

106,852Contacts tracked

55,585Verified emails

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The 25 largest actuary consulting firms based in the United States

Ranked by team size

Top 25 of 926 actuary consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to actuary consulting firms: 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	Mercer	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	10001+	20,868 contacts →
	Indirect evidence “At Mercer, A Marsh business, we’re helping our clients realize their investment objectives, shape the future of work, and enhance health and retirement outcomes for their people.” Source: RevenueBase Database · checked Sep 21, 2026
2	USI Insurance Services	Partial evidence	Valhalla, NY, United StatesHQ checked Sep 21, 2026	10001+	10,303 contacts →
	Partial evidence “USI is one of the largest insurance brokerage and consulting firms in the world, delivering property and casualty, employee benefits, personal risk, program and retirement…” Source: RevenueBase Database · checked Sep 21, 2026
3	Alliant Insurance Services	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	10001+	6,091 contacts →
	Partial evidence “Alliant Insurance Services is among the top 5 largest and fastest-growing insurance brokerage and consulting firms in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
4	Milliman	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	4,350 contacts →
	Strong evidence “Milliman is among the world’s largest independent actuarial and consulting firms.” Source: RevenueBase Database · checked Sep 21, 2026
5	Nfp, An AON Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	5,001-10,000	4,119 contacts →
	Indirect evidence “NFP, an Aon company, helps companies and individuals address today’s most significant Risk Capital and Human Capital challenges.” Source: RevenueBase Database · checked Sep 21, 2026
6	Risk Strategies Company	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	5,001-10,000	2,206 contacts →
	Indirect evidence “At Risk Strategies, part of the Brown & Brown team, we help our clients protect those things that matter most to them.” Source: RevenueBase Database · checked Sep 21, 2026
7	Alera Group, INC	Indirect evidence	Deerfield, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,643 contacts →
	Indirect evidence “Alera Group is a growing leader, reimagining the complex risk management, insurance and financial services delivery experience through intentional collaboration connecting clients…” Source: RevenueBase Database · checked Sep 21, 2026
8	World Insurance Associates LLC	Indirect evidence	Iselin, NJ, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,181 contacts →
	Indirect evidence “World is a leading financial services organization that uses its vast resources and industry expertise to empower people to make informed decisions to improve their risk…” Source: RevenueBase Database · checked Sep 21, 2026
9	SEGAL	Strong evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,149 contacts →
	Strong evidence “Segal is a leading employee-owned consulting firm with more than 1,100 professionals across North America, including 150+ credentialed actuaries.” Source: RevenueBase Database · checked Sep 21, 2026
10	HRH	Indirect evidence	Radnor, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	930 contacts →
	Indirect evidence “Willis Group Holdings plc is a leading global insurance broker.” Source: RevenueBase Database · checked Sep 21, 2026
11	Conner Strong & Buckelew	Partial evidence	Camden, NJ, United StatesHQ checked Sep 21, 2026	501-1,000	612 contacts →
	Partial evidence “As one of America’s largest and most admired insurance brokerage and consulting firms, our mission is to provide innovative solutions to businesses facing complex risks and…” Source: RevenueBase Database · checked Sep 21, 2026
12	Foundation Risk Partners	Partial evidence	Ormond Beach, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	531 contacts →
	Partial evidence “Foundation Risk Partners is one of the fastest growing insurance brokerage and consulting firms in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
13	USI Consulting Group	Partial evidence	Glastonbury, CT, United StatesHQ checked Sep 21, 2026	501-1,000	453 contacts →
	Partial evidence “USI Consulting Group (USICG), an industry leading, full-service retirement plan consulting and benefits administration firm, has been helping employers enable their workforce to…” Source: RevenueBase Database · checked Sep 21, 2026
14	Johnson Lambert LLP	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 21, 2026	201-500	326 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
15	Rcm&d	Indirect evidence	Hunt Valley, MD, United StatesHQ checked Sep 21, 2026	201-500	314 contacts →
	Indirect evidence “RCM & D is ranked among the top independent insurance advisory firms in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
16	Gibson	Indirect evidence	South Bend, IN, United StatesHQ checked Sep 21, 2026	51-200	312 contacts →
	Indirect evidence “Gibson is a firm of advisors and consultants that help clients get to the proactive side of insurance.” Source: RevenueBase Database · checked Sep 21, 2026
17	The Partners Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	201-500	266 contacts →
	Partial evidence “At The Partners Group, we offer insurance, consulting, and financial services all in one place.” Source: RevenueBase Database · checked Sep 21, 2026
18	AON Inpoint	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	10001+	252 contacts →
	Indirect evidence “Aon plc (NYSE:AON) is a leading global professional services firm providing a broad range of risk, retirement and health solutions.” Source: RevenueBase Database · checked Sep 21, 2026
19	Definiti LLC	Strong evidence	Cary, NC, United StatesHQ checked Sep 21, 2026	201-500	231 contacts →
	Strong evidence “From 401(k) plan design and administration, compliance and actuarial consulting, to pension outsourcing, recordkeeping and 3(16) fiduciary services, Definiti helps organizations…” Source: RevenueBase Database · checked Sep 21, 2026
20	Wakely Consulting Group	Strong evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	51-200	213 contacts →
	Strong evidence “Going Beyond the Numbers At Wakely Consulting Group, an HMA company, our mission is to provide the utmost in professional actuarial, health care reform consulting and value-added…” Source: RevenueBase Database · checked Sep 21, 2026
21	Marshberry	Partial evidence	Woodmere, OH, United StatesHQ checked Sep 21, 2026	201-500	213 contacts →
	Partial evidence “MarshBerry – Helping Clients Learn, Improve & Realize Value MarshBerry is a global leader in investment banking and consulting dedicated to helping insurance brokerages, and firms…” Source: RevenueBase Database · checked Sep 21, 2026
22	Henderson Brothers, INC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	51-200	194 contacts →
	Partial evidence “Henderson Brothers is a leading independent insurance, employee benefits, retirement plan consulting and personal money management firm headquartered in Pittsburgh, Pennsylvania.” Source: RevenueBase Database · checked Sep 21, 2026
23	LP Insurance Services	Indirect evidence	Reno, NV, United StatesHQ checked Sep 21, 2026	201-500	181 contacts →
	Indirect evidence “LP Insurance Services is an insurance and advisory firm that protects businesses, enables responsible growth, and supports the communities we call home.” Source: RevenueBase Database · checked Sep 21, 2026
24	October Three Consulting	Strong evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	201-500	178 contacts →
	Strong evidence “October Three Consulting, LLC is a full service actuarial, consulting and technology firm that is a leading force behind the reemergence of defined benefit plans across the…” Source: RevenueBase Database · checked Sep 21, 2026
25	The Plexus Groupe	Indirect evidence	Deer Park, IL, United StatesHQ checked Sep 21, 2026	51-200	171 contacts →
	Indirect evidence “The Plexus Groupe is a Top 100 independent insurance advisory firm backed by our knowledgeable team, innovative resources, and an extensive international network.” Source: RevenueBase Database · checked Sep 21, 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: actuary consulting firms. 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 actuary consulting firms.
Partial evidence: Its own public description names part of actuary consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name actuary consulting firms. 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 926 actuary consulting firms based in the United States

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Actuary consulting firms based in the United States at a glance

As of Sep 21, 2026

52.0%Verified-email coverage

115.4Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

523

11-50

271

51-200

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 926 companies.

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 actuary consulting firms, 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 “actuary consulting firms”. 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 actuary consulting firms), 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 actuary consulting firms, 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, 55,585 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 21, 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.

Actuary consulting firms by metro

Actuary consulting firms in New York38

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its 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 the category the list is about. Each row is rated strong evidence when the company's own description names actuary consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many actuary consulting firms are there based in the United States?

RevenueBase identified 926 actuary consulting firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Mercer, headquartered in New York, tops this list with the largest team on record.

Which city has the most actuary consulting firms?

New York leads with 38 headquartered companies, followed by Chicago (23) and Atlanta (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 55,585 verified decision-maker contacts tracked across these 926 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 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.