Company lists · Data refreshed September 2026

Top 25 Global HR outsourcing companies based in the United States

Name: Global HR outsourcing 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 28, 2026 2,934 companies tracked

RevenueBase identified 2,934 company matches for global HR outsourcing companies associated with the United States as of September 2026 and tracks 212,126 professional contacts across them, including 68,680 with verified work emails. New York is the largest hub.

This list covers company matches for global HR outsourcing 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 28, 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 28, 2026 How this list was built

2,934Companies

212,126Contacts tracked

68,680Verified emails

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The 25 largest global HR outsourcing companies based in the United States

Ranked by team size

Top 25 of 2,934 company matches for global HR outsourcing companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	ADP	Exact match	Roseland, NJ, United StatesHQ recorded Sep 28, 2026	10001+	84,166 contacts →
	Exact match “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Paychex	Exact match	Rochester, NY, United StatesHQ recorded Sep 28, 2026	10001+	17,911 contacts →
	Exact match “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	8,522 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	DEEL	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	6,510 contacts →
	Exact match “Deel is one platform for payroll, HR, benefits, mobility, performance, and device management across 150+ countries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Strada	Exact match	The Woodlands, TX, United StatesHQ recorded Sep 28, 2026	5,001-10,000	5,585 contacts →
	Exact match “With over 30 years as a global people, payroll, and technology leader, Strada specializes in removing complexity to simplify workforce management.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Lancesoft, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	4,877 contacts →
	Exact match “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Insperity	Exact match	Kingwood, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,761 contacts →
	Exact match “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Trinet	Exact match	Dublin, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,056 contacts →
	Exact match “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	GUSTO	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,543 contacts →
	Exact match “Gusto has been growing the small business economy for 15+ years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Ubiquity	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	10001+	3,396 contacts →
	Exact match “Recognized as the #1 CX provider for disruptors and innovators across financial services, healthcare, and e-commerce, Ubiquity was founded on the belief that our clients and their…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Allegis Global Solutions	Exact match	Hanover, MD, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,866 contacts →
	Exact match “At Allegis Global Solutions (AGS), we’re in the human enterprise business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Enshored	Exact match	Signal Hill, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,247 contacts →
	Exact match “Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Solvo Global	Exact match	Duluth, GA, United StatesHQ recorded Sep 28, 2026	501-1,000	2,135 contacts →
	Exact match “Solvo is changing how companies connect with talented, nearshore employees, along with the latest AI-powered tools.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Kronos Incorporated	Exact match	Lowell, MA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	1,889 contacts →
	Exact match “Built from the merger of Ultimate Software & Kronos Inc, we are now UKG.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	E-Solutions	Exact match	San Jose, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,669 contacts →
	Exact match “Empowering Technology Services” Founded in 2003, we are in our 22th year of structured growth.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Broadpath	Exact match	Tucson, AZ, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,275 contacts →
	Exact match “BroadPath provides transformational outsourcing and managed services powered by our one-of-a-kind, 100% remote business model.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	SEBPO	Exact match	Marlton, NJ, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,237 contacts →
	Exact match “SEBPO transforms operational complexity into a seamless, strategic advantage.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Eclaro	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,024 contacts →
	Exact match “ECLARO is an award-winning Talent Solutions firm headquartered in New York City and operating in the U.S, Canada and the Philippines.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Open Access BPO	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,021 contacts →
	Exact match “Open Access is a leading outsourcing solutions provider with a history of delivering high-quality services to global businesses across industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Intellipro	Exact match	San Jose, CA, United StatesHQ recorded Sep 28, 2026	501-1,000	990 contacts →
	Exact match “IntelliPro Group Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	G&a Partners	Exact match	Houston, TX, United StatesHQ recorded Sep 28, 2026	501-1,000	840 contacts →
	Exact match “Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	BOLDR	Exact match	Santa Monica, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	840 contacts →
	Exact match “Boldr believes talent is equally distributed, but opportunity is not.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	JDA TSG	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	786 contacts →
	Exact match “JDA TSG is a preferred global strategic and outsourcing partner of some of the biggest brands in the world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Ispace, INC	Exact match	El Segundo, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	755 contacts →
	Exact match “iSpace is a global services company focused on Information Technology Services, Business Process Services, Location Based Services and Healthcare Solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Mineral, Part Of Mitratech	Exact match	Portland, OR, United StatesHQ recorded Sep 28, 2026	201-500	701 contacts →
	Exact match “Trusted by more than 1 million companies, Mineral is the HR and compliance leader for growing businesses.” Recorded in the RevenueBase company graph · Sep 28, 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 “global HR outsourcing 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 2,934 global HR outsourcing companies based in the United States

See the full list, filter by size, metro and specialty, and access 68,680 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Global HR outsourcing companies based in the United States at a glance

As of Sep 28, 2026

32.4%Verified-email coverage

72.3Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,523

11-50

821

51-200

331

201-500

109

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 2,934 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 “global HR outsourcing 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 68,680 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 28, 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.

Global HR outsourcing 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 “global HR outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many global HR outsourcing companies are there based in the United States?

RevenueBase identified 2,934 company matches for global HR outsourcing 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?

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

Which city has the most global HR outsourcing companies?

New York leads with 105 company records, followed by Miami (49) and Atlanta (48).

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 68,680 professional contacts with verified work emails tracked across these 2,934 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 28, 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.