Company lists · Data refreshed September 2026

Top 25 Retained search services based in the United States

Name: Retained search services 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 10,637 companies tracked

RevenueBase identified 10,637 retained search services headquartered in the United States as of September 2026 and tracks 174,201 professional contacts across them, including 42,033 with verified work emails. New York is the largest hub.

This list covers retained search services 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

10,637Companies

174,201Contacts tracked

42,033Verified emails

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The 25 largest retained search services based in the United States

Ranked by team size

Top 25 of 10,637 retained search services 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 retained search services: 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	Robert Half	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 21, 2026	10001+	25,574 contacts →
	Indirect evidence “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Source: RevenueBase Database · checked Sep 21, 2026
2	Heidrick & Struggles	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,376 contacts →
	Partial evidence “Heidrick & Struggles is the premier provider of executive search, corporate culture and leadership consulting services.” Source: RevenueBase Database · checked Sep 21, 2026
3	Beacon Hill	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,238 contacts →
	Partial evidence “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: RevenueBase Database · checked Sep 21, 2026
4	Spencer Stuart	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,889 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
5	Addison Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,840 contacts →
	Indirect evidence “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Source: RevenueBase Database · checked Sep 21, 2026
6	SELF	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	n/a	1,431 contacts →
	Indirect evidence “We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Source: RevenueBase Database · checked Sep 21, 2026
7	ASK Consulting	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 21, 2026	501-1,000	1,296 contacts →
	Indirect evidence “ASK Consulting is an award-winning technology and professional services recruiting firm servicing Fortune 500 organizations nationally.” Source: RevenueBase Database · checked Sep 21, 2026
8	GSI	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	n/a	1,183 contacts →
	Indirect evidence “Founded in 1997, GSI specializes in five primary practice areas, Life Sciences (biotechnology, pharmaceuticals, biomedical technologies), Medical Device/Capital Equipment…” Source: RevenueBase Database · checked Sep 21, 2026
9	Planet Pharma	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Founded in 2012, Planet Pharma is a global leader in life sciences recruitment and staffing, specializing in Pharmaceuticals, Biotechnology, Medical Device, Labs & Healthcare…” Source: RevenueBase Database · checked Sep 21, 2026
10	Accounting & Finance Professionals	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 21, 2026	n/a	973 contacts →
	Indirect evidence “With over a decade of experience, we specialize in Finance, Accounting, Administrative, and Executive staffing markets.” Source: RevenueBase Database · checked Sep 21, 2026
11	Self Opportunity, INC	Indirect evidence	Lewisville, TX, United StatesHQ checked Sep 21, 2026	n/a	969 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
12	Career Strategies	Indirect evidence	Round Rock, TX, United StatesHQ checked Sep 21, 2026	n/a	955 contacts →
	Indirect evidence “Career Strategies is a full service staffing firm specializing in Property Management, Healthcare and Professional Services recruitment.” Source: RevenueBase Database · checked Sep 21, 2026
13	Boyden	Indirect evidence	Tarrytown, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	939 contacts →
	Indirect evidence “Transforming today’s organisations with tomorrow’s leaders.” Source: RevenueBase Database · checked Sep 21, 2026
14	Vbeyond Corporation	Partial evidence	Hillsborough, United StatesHQ checked Sep 21, 2026	201-500	878 contacts →
	Partial evidence “VBeyond is a Search and HR consulting firm- by the Professionals, for the Professionals and of the Professionals!” Source: RevenueBase Database · checked Sep 21, 2026
15	H.P. Associates, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	n/a	869 contacts →
	Indirect evidence “H.P.” Source: RevenueBase Database · checked Sep 21, 2026
16	Elite Network	Indirect evidence	San Francisco Bay, CA, United StatesHQ checked Sep 21, 2026	n/a	841 contacts →
	Indirect evidence “Elite Network is a recruiting firm specializing in accounting and finance, with deep roots in the Bay Area and clients across the country.” Source: RevenueBase Database · checked Sep 21, 2026
17	True Search	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	501-1,000	807 contacts →
	Partial evidence “True is modernizing executive hiring by combining global search expertise with the True AI Capability Index™, the industry’s only methodology for assessing candidate adaptability…” Source: RevenueBase Database · checked Sep 21, 2026
18	Eastridge Workforce Solutions	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	n/a	803 contacts →
	Indirect evidence “Eastridge Workforce Solutions is a trusted staffing partner helping businesses build stronger, more productive teams across industrial and professional sectors.” Source: RevenueBase Database · checked Sep 21, 2026
19	Stanton Chase Executive Search & Leadership Consultants	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	501-1,000	766 contacts →
	Indirect evidence “Great organizations need exceptional leaders.” Source: RevenueBase Database · checked Sep 21, 2026
20	Cynet Systems	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	732 contacts →
	Indirect evidence “Headquartered in Washington DC Metro Area, Cynet Systems is a top talent supplier for companies across North America.” Source: RevenueBase Database · checked Sep 21, 2026
21	Solomon Page	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	687 contacts →
	Partial evidence “Founded in 1990, Solomon Page is a leading staffing and executive search firm headquartered in New York City with offices across the United States.” Source: RevenueBase Database · checked Sep 21, 2026
22	DHR Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	501-1,000	656 contacts →
	Partial evidence “For more than 35 years, DHR has been a leading provider of executive search, leadership consulting and emerging leader search solutions, serving more than 60 markets around the…” Source: RevenueBase Database · checked Sep 21, 2026
23	ZRG	Indirect evidence	Rochelle Park, NJ, United StatesHQ checked Sep 21, 2026	201-500	606 contacts →
	Indirect evidence “ZRG is a global talent advisory firm that is changing the way companies hire and manage talent.” Source: RevenueBase Database · checked Sep 21, 2026
24	Cybercoders	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	531 contacts →
	Indirect evidence “CyberCoders, a division of ASGN Incorporated, is a leading permanent placement recruiting firm.” Source: RevenueBase Database · checked Sep 21, 2026
25	Options Group	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	498 contacts →
	Partial evidence “Options Group is a leading global executive search and strategic consulting firm specializing in financial services including capital markets, global markets, alternative…” 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: retained search services. 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 retained search services.
Partial evidence: Its own public description names part of retained search services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retained search services. 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 10,637 retained search services based in the United States

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Retained search services based in the United States at a glance

As of Sep 21, 2026

24.1%Verified-email coverage

16.4Average contacts per company

1-10Median size (employees)

7.9%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

7,294

11-50

2,464

51-200

637

201-500

138

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 10,637 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 retained search services, 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 “retained search services”. 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 retained search services), 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 retained search services, 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, 42,033 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.

Retained search services by metro

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 retained search services, 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 retained search services are there based in the United States?

RevenueBase identified 10,637 retained search services 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?

Robert Half, headquartered in Menlo Park, tops this list with the largest team on record.

Which city has the most retained search services?

New York leads with 839 headquartered companies, followed by Chicago (335) and Atlanta (288).

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 42,033 verified decision-maker contacts tracked across these 10,637 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.