Company lists · Data refreshed September 2026

Top 13 Nonprofit HR service providers based in Seattle, United States

Name: Nonprofit HR service providers based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 39 companies tracked

RevenueBase identified 39 company matches for nonprofit HR service providers associated with Seattle, United States as of September 2026 and tracks 349 professional contacts across them, including 122 with verified work emails. Across the United States, New York is the largest hub for this category (141 companies); Seattle has 39.

This list covers company matches for nonprofit HR service providers associated with Seattle, 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 20, 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 20, 2026 How this list was built

39Companies

349Contacts tracked

122Verified emails

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The 13 largest nonprofit HR service providers based in Seattle, United States

Ranked by team size

Top 13 of 39 company matches for nonprofit HR service providers based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	Archbright	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	51-200	93 contacts →
	Exact match “Archbright™ is the go-to resource for employers offering expert HR, safety, and legal support.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	501 Commons	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	51-200	56 contacts →
	Exact match “We all rise when nonprofits thrive.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Plum Coaching & HR Consulting	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	11-50	20 contacts →
	Exact match “Plum provides a range of HR services, as well as career-related coaching.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Finney Neill & Company, P.S	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	11-50	14 contacts →
	Exact match “Finney, Neill & Company, P.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	The Ostara Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	11-50	11 contacts →
	Exact match “The Ostara Group is an advisor to mission-driven nonprofits.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	HR Group International	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	6 contacts →
	Exact match “Human Resources Group International, Inc.(HRGI) is a group of Human Resources consultants with over 25 years of experience in the field providing comprehensive human resources…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Cavnesshr	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	4 contacts →
	Exact match “At cavnessHR we deliver HR to companies with 49 or fewer people across the U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Modern Human HR	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “Modern Human helps people be and do their best for the benefit of innovative Pacific Northwest companies that see HR as a tool for achieving strategic goals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Hruprise	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	3 contacts →
	Exact match “We support employees with independent HR coaching.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Social Strategies, LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Social Strategies is dedicated to educating and supporting social service agencies, non-profits, and charities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	CDS Human Capital Consulting LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “cDs Human Capital Consulting LLC was founded in 2016 by Carla S Dye, a human resource consulting company located in the Washington DC Metropolitan area focused on emerging…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	BIG Wave Recruiting	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Are you a CEO, CFO, or in HR leadership?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	KLS Works LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “Consultation and interim leadership in operations, finance, and program management.” Recorded in the RevenueBase company graph · Sep 20, 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 “nonprofit HR service providers”. 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 13 of 39 nonprofit HR service providers based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 122 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit HR service providers based in Seattle, United States at a glance

As of Sep 20, 2026

35.0%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

Sep 20, 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 Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 39 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 Seattle, United States whose business descriptions match “nonprofit HR service providers” 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 122 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 20, 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.

Nonprofit HR service providers by metro in the United States

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 “nonprofit HR service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nonprofit HR service providers are there based in Seattle, United States?

RevenueBase identified 39 company matches for nonprofit HR service providers associated with Seattle, 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?

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

Which city in the United States has the most nonprofit HR service providers?

New York leads the United States with 141 company records, followed by Atlanta (105) and Chicago (101). Seattle has 39.

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 122 professional contacts with verified work emails tracked across these 39 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 20, 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.