Company lists · Data refreshed September 2026

Top 25 Retail human resources outsourcing companies based in the United States

RevenueBase identified 3,033 retail human resources outsourcing companies headquartered in the United States as of September 2026 and tracks 139,441 professional contacts across them, including 45,344 with verified work emails. New York is the largest hub.

This list covers retail human resources outsourcing companies 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 29, 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 29, 2026 86% judged on-target in blind review
3,033Companies
139,441Contacts tracked
45,344Verified emails
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The 25 largest retail human resources outsourcing companies based in the United States

Ranked by team size
Top 25 of 3,033 retail human resources outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to retail human resources outsourcing companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceRoseland, NJ, United StatesHQ checked Sep 29, 202610001+84,166 contacts →

Indirect evidence

“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 29, 20261,001-5,0008,522 contacts →

Indirect evidence

“Randstad North America, Inc.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceKingwood, TX, United StatesHQ checked Sep 29, 20261,001-5,0004,761 contacts →

Indirect evidence

“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceDublin, CA, United StatesHQ checked Sep 29, 20261,001-5,0004,056 contacts →

Indirect evidence

“TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceMarina Del Rey, CA, United StatesHQ checked Sep 29, 20261,001-5,0004,000 contacts →

Indirect evidence

“PSG is a global leader in recruitment process optimization, delivering high-performance outsourced recruiting solutions that drive real business results.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceHanover, MD, United StatesHQ checked Sep 29, 20261,001-5,0002,866 contacts →

Partial evidence

“At Allegis Global Solutions (AGS), we’re in the human enterprise business.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceBradenton, FL, United StatesHQ checked Sep 29, 2026201-500586 contacts →

Indirect evidence

“CoAdvantage is now CoAd.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceGreenville, SC, United StatesHQ checked Sep 29, 20261,001-5,000553 contacts →

Indirect evidence

“Industrial Staffing | Professional & Skilled Hourly Recruiting | HR Services | Retention Strategies | Outplacement | Greenfield Start Ups & Expansions | Talent Management At HTI…”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceRichfield, OH, United StatesHQ checked Sep 29, 2026501-1,000535 contacts →

Indirect evidence

“We provide comprehensive HR solutions to companies of all sizes throughout the United States.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceMinnetonka, MN, United StatesHQ checked Sep 29, 2026n/a402 contacts →

Indirect evidence

“HR Personnel Services is a leading national staffing and executive search firm specializing exclusively in placing HR professionals.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceClearwater, FL, United StatesHQ checked Sep 29, 2026201-500383 contacts →

Indirect evidence

“FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceRaleigh, NC, United StatesHQ checked Sep 29, 2026n/a381 contacts →

Partial evidence

“Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceMiami, FL, United StatesHQ checked Sep 29, 2026201-500334 contacts →

Partial evidence

“Somos parte de ARCH Resources Group, un conglomerado líder en el desarrollo de soluciones en Recursos Humanos, con presencia en 12 países del continente.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceMonona, WI, United StatesHQ checked Sep 29, 202651-200324 contacts →

Indirect evidence

“BASIC's integrated HR solutions come full-circle for employers nationwide.”

Source: RevenueBase Database · checked Sep 29, 2026
15Strong evidenceTampa, FL, United StatesHQ checked Sep 29, 2026201-500321 contacts →

Strong evidence

“At PuzzleHR, we help companies solve the Human Resource puzzle by providing "HR as a Service".”

Source: RevenueBase Database · checked Sep 29, 2026
16Strong evidenceOrlando, FL, United StatesHQ checked Sep 29, 2026501-1,000297 contacts →

Strong evidence

“CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceCosta Mesa, CA, United StatesHQ checked Sep 29, 2026501-1,000291 contacts →

Indirect evidence

“Employers need a partner they can rely on to face today’s new challenges.”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidenceThe Woodlands, TX, United StatesHQ checked Sep 29, 202651-200279 contacts →

Partial evidence

“Outsourcing HR through a PEO is a strong option for growing businesses.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceAllentown, PA, United StatesHQ checked Sep 29, 20261,001-5,000275 contacts →

Indirect evidence

“Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.”

Source: RevenueBase Database · checked Sep 29, 2026
20Strong evidenceNashville, TN, United StatesHQ checked Sep 29, 2026201-500271 contacts →

Strong evidence

“Inova Payroll is a leading employer services company, integrating payroll and human capital management (HCM) technology with personalized support and full-service HR outsourcing.”

Source: RevenueBase Database · checked Sep 29, 2026
21Strong evidenceMarion, IL, United StatesHQ checked Sep 29, 2026501-1,000243 contacts →

Strong evidence

“HireLevel is a certified women-owned business (WBE), nationwide Human Capital Management company leading the way in human resources and staffing, payroll, timekeeping, and…”

Source: RevenueBase Database · checked Sep 29, 2026
22Partial evidenceAnaheim, CA, United StatesHQ checked Sep 29, 20261,001-5,000237 contacts →

Partial evidence

“Staff Boom specializes in customized staffing solutions and consulting for small and medium sized businesses to save money and resources, improve how they work and prevent…”

Source: RevenueBase Database · checked Sep 29, 2026
23Strong evidenceSan Diego, CA, United StatesHQ checked Sep 29, 202651-200213 contacts →

Strong evidence

“TEAM Risk Management Strategies is the nation’s leading provider of comprehensive, outsourced payroll and human resources services for fiduciaries and advisors whose clients have…”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 29, 2026201-500209 contacts →

Indirect evidence

“Neer Info Solutions is a boutique executive search firm and has been in the search industry since 2005.”

Source: RevenueBase Database · checked Sep 29, 2026
25Strong evidenceRichmond, VA, United StatesHQ checked Sep 29, 202651-200197 contacts →

Strong evidence

“Dominion Payroll is a leader in payroll and human resource solutions for clients nationwide.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 3,033 retail human resources outsourcing companies based in the United States

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Retail human resources outsourcing companies based in the United States at a glance

As of Sep 29, 2026
32.5%Verified-email coverage
46.0Average contacts per company
1-10Median size (employees)
2.7%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
2,094
11-50
609
51-200
190
201-500
55
501-1,000
28
1,001-5,000
38
5,001-10,000
10
10001+
6

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 3,033 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 retail human resources outsourcing companies, 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 “retail human resources outsourcing companies”. 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 retail human resources outsourcing companies), 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 retail human resources outsourcing companies, 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, 45,344 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 29, 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.

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 retail human resources outsourcing companies, 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 retail human resources outsourcing companies are there based in the United States?

RevenueBase identified 3,033 retail human resources outsourcing companies 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?

ADP, headquartered in Roseland, tops this list with the largest team on record.

Which city has the most retail human resources outsourcing companies?

New York leads with 83 headquartered companies, followed by Atlanta (67) and Los Angeles (49).

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 45,344 verified decision-maker contacts tracked across these 3,033 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 29, 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.