Company lists · Data refreshed September 2026

Top 25 Nonprofit HR service providers based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 4,380 companies tracked

RevenueBase identified 4,380 company matches for nonprofit HR service providers associated with the United States as of September 2026 and tracks 37,495 professional contacts across them, including 14,469 with verified work emails. New York is the largest hub.

This list covers company matches for nonprofit HR service providers 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 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

4,380Companies

37,495Contacts tracked

14,469Verified emails

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The 25 largest nonprofit HR service providers based in the United States

Ranked by team size

Top 25 of 4,380 company matches for nonprofit HR service providers based in the 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	Insperity	Exact match	Kingwood, TX, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
2	Your Part-Time Controller, LLC	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 20, 2026	501-1,000	775 contacts →
	Exact match “THE NONPROFIT ACCOUNTING SPECIALISTS.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mineral, Part Of Mitratech	Exact match	Portland, OR, United StatesHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
4	Coadvantage	Exact match	Bradenton, FL, United StatesHQ recorded Sep 20, 2026	201-500	586 contacts →
	Exact match “CoAdvantage is now CoAd.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	PNP Staffing Group	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	n/a	486 contacts →
	Exact match “PNP Staffing Group believes in the power of nonprofits to make a difference, and we provide the staff to help make that difference.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	HR Personnel Services	Exact match	Minnetonka, MN, United StatesHQ recorded Sep 20, 2026	n/a	402 contacts →
	Exact match “HR Personnel Services is a leading national staffing and executive search firm specializing exclusively in placing HR professionals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	BASIC	Exact match	Monona, WI, United StatesHQ recorded Sep 20, 2026	51-200	324 contacts →
	Exact match “BASIC's integrated HR solutions come full-circle for employers nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Puzzlehr	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	201-500	321 contacts →
	Exact match “At PuzzleHR, we help companies solve the Human Resource puzzle by providing "HR as a Service".” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Nonprofit Hr, Powered By Onedigital	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	10001+	300 contacts →
	Exact match “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	MRA	Exact match	Waukesha, WI, United StatesHQ recorded Sep 20, 2026	201-500	290 contacts →
	Exact match “Founded in 1901, MRA is a nonprofit employer association that serves more than employers, covering more than 1 million employees worldwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Coordinated Care Services, Inc. Ccsi	Exact match	Rochester, NY, United StatesHQ recorded Sep 20, 2026	201-500	287 contacts →
	Exact match “CCSI is a not-for-profit management services organization with a special focus in the area of behavioral health and human services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Capincrouse	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 20, 2026	51-200	262 contacts →
	Exact match “As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Arabella Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	227 contacts →
	Exact match “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Team Risk Management Strategies	Exact match	San Diego, CA, United StatesHQ recorded Sep 20, 2026	51-200	213 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	M R	Exact match	Washington, United StatesHQ recorded Sep 20, 2026	51-200	208 contacts →
	Exact match “We are M+R.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	CPS HR Consulting	Exact match	Sacramento, CA, United StatesHQ recorded Sep 20, 2026	51-200	200 contacts →
	Exact match “For over 40 years, CPS HR Consulting has delivered trusted HR solutions that strengthen the public sector.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	HR Source	Exact match	Downers Grove, IL, United StatesHQ recorded Sep 20, 2026	n/a	189 contacts →
	Exact match “With HR Source, you're more than a customer - you're a member.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Nexeo HR	Exact match	Lehi, UT, United StatesHQ recorded Sep 20, 2026	51-200	185 contacts →
	Exact match “Nexeo is a dynamic full-service human resources firm that provides employers with comprehensive recruiting and staffing, payroll and benefits solutions, and consulting and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Lamb Insurance Services	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	181 contacts →
	Exact match “Lamb Insurance Service is the largest, national brokerage dedicated exclusively to nonprofit and human service organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	FES	Exact match	Lincoln, NE, United StatesHQ recorded Sep 20, 2026	51-200	181 contacts →
	Exact match “FES is a nonprofit foundation that provides support to communities and nonprofit organizations so they can focus on fulfilling their missions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Arbor Associates	Exact match	Southborough, MA, United StatesHQ recorded Sep 20, 2026	201-500	175 contacts →
	Exact match “Arbor Associates has been serving partners in the field of Human Services throughout New England for more than 30 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Minutemen HR	Exact match	Cleveland, OH, United StatesHQ recorded Sep 20, 2026	51-200	160 contacts →
	Exact match “Minutemen HR is a Cleveland-based, family-owned business that serves over companies by offering a range of business solutions to cost-effectively manage your workforce.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Insource Services, INC	Exact match	Wellesley, MA, United StatesHQ recorded Sep 20, 2026	51-200	149 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Lyons HR	Exact match	Florence, AL, United StatesHQ recorded Sep 20, 2026	51-200	149 contacts →
	Exact match “Lyons HR is a “Full Service” human resource company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	NEW Hope Services, INC	Exact match	Jeffersonville, IN, United StatesHQ recorded Sep 20, 2026	51-200	140 contacts →
	Exact match “Based in Jeffersonville, Indiana, New Hope Services has a rich history of meeting human services needs for the past 65 years.” 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 25 of 4,380 nonprofit HR service providers based in the United States

See the full list, filter by size, metro and specialty, and access 14,469 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit HR service providers based in the United States at a glance

As of Sep 20, 2026

38.6%Verified-email coverage

8.6Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,485

11-50

656

51-200

160

201-500

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 4,380 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 “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 14,469 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

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 the United States?

RevenueBase identified 4,380 company matches for nonprofit HR service providers 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?

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

Which city has the most nonprofit HR service providers?

New York leads with 145 company records, followed by Atlanta (105) and Chicago (101).

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 14,469 professional contacts with verified work emails tracked across these 4,380 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.