Company lists · Data refreshed September 2026

Top 25 Nonprofit HR service providers based in Chicago, United States

RevenueBase identified 101 company matches for nonprofit HR service providers associated with Chicago, United States as of September 2026 and tracks 957 professional contacts across them, including 295 with verified work emails. Across the United States, New York is the largest hub for this category (141 companies); Chicago has 101.

This list covers company matches for nonprofit HR service providers associated with Chicago, 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
101Companies
957Contacts tracked
295Verified emails
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The 25 largest nonprofit HR service providers based in Chicago, United States

Ranked by team size
Top 25 of 101 company matches for nonprofit HR service providers based in Chicago, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-200102 contacts →

Exact match

“Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202651-20072 contacts →

Exact match

“Bostrom is a professional services firm offering comprehensive management, consulting and outsourcing to the not-for-profit community.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5050 contacts →

Exact match

“DBD Group is a professional services firm that works for not-for-profit organizations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5031 contacts →

Exact match

“More than 2,200 organizations across the country rely on First Nonprofit’s unemployment programs and save millions annually.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-1029 contacts →

Exact match

“Kittleman is the first national executive recruiting firm dedicated exclusively to recruiting chief executive officers and executive directors for tax-exempt nonprofit…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“Salesberry Group is a financial, people, and general operations firm serving progressive organizations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“Our purpose is to make it easier for mission-driven organizations to focus their efforts on creating a better world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5020 contacts →

Exact match

“Big Buzz Idea Group works with nonprofits and associations who want their offices to run more efficiently so they can focus on their mission and organizational growth.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-1016 contacts →

Exact match

“Wagenmaker & Oberly, LLC provides a broad spectrum of legal services to nonprofit organizations and others within the philanthropic sector.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“Keystone Alliance is an ecosystem of nonprofit organizations, services, and initiatives, working together and with the field as a collaborative force to help nonprofits strengthen…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-109 contacts →

Exact match

“At Vantage Solutions, we believe that business success is driven by people.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-508 contacts →

Exact match

“Founded in 2006, EvolveHR partners with US companies to support their HR needs and drive their people growth.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchChicago, United StatesHQ recorded Sep 20, 20261-108 contacts →

Exact match

“We Staff Your Mission.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchChicago, United StatesHQ recorded Sep 20, 20261-108 contacts →

Exact match

“Implementing the highest caliber integrity based human resources solutions and support, to drive top tier business outcomes, by a network of best in class hr pro’s, without the…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchChicago, United StatesHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Marketstaff, Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Noetic Search is a national retained search and consulting firm, exclusively serving the nonprofit sector.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Cooper Coleman is a leading national executive search firm serving mission-driven organizations across the nonprofit and social impact sector.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Focused on employment law on behalf of management and executives, Savine Employment Law, Ltd.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-105 contacts →

Exact match

“We offer a full range of customized HR services designed to alleviate the burden of HR on business resources while partnering with clients to drive business performance through…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-105 contacts →

Exact match

“The Back Office Cooperative (BOC) was founded in 2008 by a group of Chicago nonprofits who understood the power of creating scale in purchasing.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Morales Consulting specializes in human resources, philanthropic strategies/grantmaking and strategic planning.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Olive Park Consulting Group provides specialized Accounting, Finance and Human Resources support services for small-to medium-sized businesses.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202611-504 contacts →

Exact match

“We're a Human Resources services and consulting firm that specializes in serving startups, SMBs and non-profit organizations; whether it's payroll, employee benefits, HR software…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchChicago, United StatesHQ recorded Sep 20, 20261-103 contacts →

Exact match

“At TA Resources, we recognize the challenge Small Businesses face when staffing and retaining talent, and we know the most important driver of success for any business is its…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchChicago, United StatesHQ recorded Sep 20, 202611-503 contacts →

Exact match

“Most small and midsize businesses are told they have two choices: hand everything over to a PEO and lose their identity, or settle for a payroll vendor that doesn’t actually solve…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 101 nonprofit HR service providers based in Chicago, United States

See the full list, filter by size, metro and specialty, and access 295 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 20, 2026
30.8%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
82
11-50
14
51-200
4
201-500
1

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 101 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 Chicago, 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 295 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.

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 Chicago, United States?

RevenueBase identified 101 company matches for nonprofit HR service providers associated with Chicago, 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?

Campbell & Company 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).

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 295 professional contacts with verified work emails tracked across these 101 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.