Company lists · Data refreshed September 2026

Top 25 HR outsourcing firms based in Washington, United States

Name: HR outsourcing firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 76 companies tracked

RevenueBase identified 76 HR outsourcing firms headquartered in Washington, United States as of September 2026 and tracks 587 professional contacts across them, including 178 with verified work emails. Across the United States, New York is the largest hub for this category (417 companies); Washington has 76.

This list covers HR outsourcing firms headquartered in Washington, 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 30, 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 30, 2026 86% judged on-target in blind review

76Companies

587Contacts tracked

178Verified emails

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The 25 largest HR outsourcing firms based in Washington, United States

Ranked by team size

Top 25 of 76 HR outsourcing firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to HR outsourcing 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	Seramount	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	51-200	262 contacts →
	Partial evidence “Seramount is a leading talent services firm that helps HR leaders prepare for the workplace of tomorrow.” Source: RevenueBase Database · checked Sep 30, 2026
2	PRM Consulting Group, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	11-50	77 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
3	Human Capital Strategic Consulting	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	7 contacts →
	Indirect evidence “A certified woman-owned small business, Human Capital Strategic Consulting provides an integrated suite of management consulting services that accelerates business performance…” Source: RevenueBase Database · checked Sep 30, 2026
4	Talint	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	7 contacts →
	Partial evidence “Talint is the only HR consultancy dedicated to improving small business performance and we have designed our service model to meet the specific needs of this community.” Source: RevenueBase Database · checked Sep 30, 2026
5	Pinnacle HR Consulting, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	11-50	6 contacts →
	Strong evidence “HR Empowered, Consulting & Outsourcing serving the District of Columbia, Maryland, Virginia, Georgia, North Carolina and South Carolina.” Source: RevenueBase Database · checked Sep 30, 2026
6	JOB Society	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	6 contacts →
	Indirect evidence “For us, it's not about "filling the order." We won't ever push you to hire a candidate or accept an offer.in fact, we might even talk you out of it!” Source: RevenueBase Database · checked Sep 30, 2026
7	Legal E	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	51-200	6 contacts →
	Indirect evidence “Legal E has been a trusted employment partner since 2003.” Source: RevenueBase Database · checked Sep 30, 2026
8	Accelhrate	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	11-50	4 contacts →
	Indirect evidence “accelHRate is a retainer-based executive search firm focused on primarily placing Boards of Directors and Human Resource Executives.” Source: RevenueBase Database · checked Sep 30, 2026
9	Aspen Of Dc, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	51-200	4 contacts →
	Partial evidence “ADC Management Solutions is a woman and minority-owned human capital outsourcing company providing consulting and administrative management solutions to government and commercial…” Source: RevenueBase Database · checked Sep 30, 2026
10	Redwood Staffing	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	51-200	4 contacts →
	Partial evidence “Redwood Staffing understands the immediate impact that intelligent outsourcing can have on your business.” Source: RevenueBase Database · checked Sep 30, 2026
11	Dahl-Morrow International	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	11-50	3 contacts →
	Indirect evidence “DMI is an Executive Search, Interim Management, and Human Capital Consulting firm, with over 25 years of success in providing industry expertise to our clients worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
12	PAT Taylor & Associates, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Passion for the Process, Respect for Colleagues, and Appreciation for the Common Goal Since 1992, these three principles helped PTA aggressively expand from one woman’s vision to…” Source: RevenueBase Database · checked Sep 30, 2026
13	Officium, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Officium, LLC is an HR management consulting firm that provides innovative problem solving through an HR lens in a way that is sustainable and maintains, or increases…” Source: RevenueBase Database · checked Sep 30, 2026
14	Fuelhr	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	11-50	3 contacts →
	Indirect evidence “FuelHR aligns and accelerates the lifeblood of organizations - its workforce.” Source: RevenueBase Database · checked Sep 30, 2026
15	Venture Hr, LLC	Indirect evidence	Washington, MI, United StatesHQ checked Sep 30, 2026	11-50	2 contacts →
	Indirect evidence “VentureHR Pro, a family owned business was founded when a need arose to help businesses (small & large) with payroll, employee management and administration, and simply just to be…” Source: RevenueBase Database · checked Sep 30, 2026
16	Greater Human Capital	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Partial evidence “Greater Human Capital is a people-first HR consulting firm helping organizations strengthen compliance, strategy, and culture.” Source: RevenueBase Database · checked Sep 30, 2026
17	Managers Resource Group, INC	Indirect evidence	Washington, WV, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence “The team at Managers Resource Group, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
18	Peoplewisehr	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence “The mission of PeopleWiseHR is to advise partner and deliver tailored solutions that transform the employee experience and elevates organizational performance.” Source: RevenueBase Database · checked Sep 30, 2026
19	Finden Search	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “A boutique search firm specializing in the placement of HR and Talent Acquisition Professionals.” Source: RevenueBase Database · checked Sep 30, 2026
20	Calibrate North LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “We offer a variety of outsourced recruiting services to our partners.” Source: RevenueBase Database · checked Sep 30, 2026
21	RISE	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “RISE provides HR and Talent Development Solutions that help organizations in the development sector achieve greater social impact.” Source: RevenueBase Database · checked Sep 30, 2026
22	Anthro Capital	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “Founded by Alana Elston, Anthro Capital combines a human-centered philosophy with deep expertise in HR and people operations.” Source: RevenueBase Database · checked Sep 30, 2026
23	Chloe Caras Consulting, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “I am an experienced and dedicated human resources and business operations consultant who helps companies from a range of sectors and industries customize and operationalize…” Source: RevenueBase Database · checked Sep 30, 2026
24	Integristar HR Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “I provide HR consulting and training to organizations who are looking to create, assess, or realign their organizational goals with their talent.” Source: RevenueBase Database · checked Sep 30, 2026
25	Blue Lotus Leadership Solutions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “Blue Lotus Leadership Solutions is a human resources consulting firm that takes a holistic and deliberate approach to providing solutions to public, private, and nonprofit…” Source: RevenueBase Database · checked Sep 30, 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: HR outsourcing 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 HR outsourcing firms.
Partial evidence: Its own public description names part of HR outsourcing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name HR outsourcing 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 76 HR outsourcing firms based in Washington, United States

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HR outsourcing firms based in Washington, United States at a glance

As of Sep 30, 2026

30.3%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 76 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 HR outsourcing 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 Washington, United States whose own description of what they do matches “HR outsourcing 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 HR outsourcing 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 HR outsourcing firms, and records with no verified work email. Companies headquartered outside Washington 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, 178 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 30, 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.

HR outsourcing firms by metro in the United States

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 HR outsourcing 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 HR outsourcing firms are there based in Washington, United States?

RevenueBase identified 76 HR outsourcing firms headquartered in Washington, 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?

Seramount, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most HR outsourcing firms?

New York leads the United States with 417 headquartered companies, followed by Atlanta (236) and Houston (217). Washington has 76.

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 178 verified decision-maker contacts tracked across these 76 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 30, 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.