Company lists · Data refreshed September 2026

Top 25 HR outsourcing advisors based in Columbus, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 63 companies tracked

RevenueBase identified 63 HR outsourcing advisors headquartered in Columbus, United States as of September 2026 and tracks 841 professional contacts across them, including 267 with verified work emails. Across the United States, New York is the largest hub for this category (464 companies); Columbus has 63.

This list covers HR outsourcing advisors headquartered in Columbus, 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

63Companies

841Contacts tracked

267Verified emails

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The 25 largest HR outsourcing advisors based in Columbus, United States

Ranked by team size

Top 25 of 63 HR outsourcing advisors based in Columbus, 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 advisors: 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	MAN Power	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	201-500	167 contacts →
	Indirect evidence “Manpower Inc.(NYSE: MAN) is a world leader in the workforce solutions; creating and delivering services that enable its clients to win in the changing world of work.” Source: RevenueBase Database · checked Sep 30, 2026
2	Nxtthing RPO	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	51-200	156 contacts →
	Indirect evidence “NXTThing is a leading talent solutions provider specializing in RPO, high-volume hiring technologies, recruitment marketing agency services, and talent analytics platforms.” Source: RevenueBase Database · checked Sep 30, 2026
3	opoc.us	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	201-500	135 contacts →
	Indirect evidence “OPOC.us (One Point of Care™.” Source: RevenueBase Database · checked Sep 30, 2026
4	Clemans, Nelson & Associates, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	11-50	40 contacts →
	Indirect evidence “Clemans Nelson is the preeminent public sector labor relations and human resource consulting firm in the state of Ohio.” Source: RevenueBase Database · checked Sep 30, 2026
5	Delphia Consulting, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	11-50	36 contacts →
	Partial evidence “Delphia Consulting provides on-premise and cloud-based HR and payroll solutions for small to mid-sized organizations throughout North America.” Source: RevenueBase Database · checked Sep 30, 2026
6	Consolidated Employer Services, INC	Partial evidence	Columbus, United StatesHQ checked Sep 30, 2026	11-50	31 contacts →
	Partial evidence “CES handles administrative and HR needs for small business including risk management, employee benefits, payroll administration and HR consulting.” Source: RevenueBase Database · checked Sep 30, 2026
7	Proiasys INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	51-200	23 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
8	MY Business Resource	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	21 contacts →
	Indirect evidence “At My Business Resource, our mission is to empower businesses to build thriving, inclusive, and dynamic workplaces through innovative human resource solutions.” Source: RevenueBase Database · checked Sep 30, 2026
9	Unfinished Business	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	12 contacts →
	Partial evidence “Unfinished Business, Matrix Psychological Services corporate consulting division, has been helping business leaders and HR professionals manage their executive talent for more…” Source: RevenueBase Database · checked Sep 30, 2026
10	Go-Hr A DBA Of Boldlygo Career And HR Management, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	10 contacts →
	Partial evidence “Full-service, full-cycle outsourced HR for small businesses, and HR support for HR Departments of One and over-extended HR departments in larger organizations.” Source: RevenueBase Database · checked Sep 30, 2026
11	Centric HC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	51-200	10 contacts →
	Partial evidence “Providing organizations across the nation expert guidance in the areas of Human Resources, HR & Pay Technology, Benefits Administration, and Retirement Planning.” Source: RevenueBase Database · checked Sep 30, 2026
12	Vivo Growth Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	7 contacts →
	Indirect evidence “At VIVO Growth Partners, we’re all about helping you invest in what matters most-your people.” Source: RevenueBase Database · checked Sep 30, 2026
13	Tallann Resources, LLC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	5 contacts →
	Partial evidence “We are Talent Advisors providing consulting, training, and speaking specifically for the staffing industry and corporate talent acquisition function.” Source: RevenueBase Database · checked Sep 30, 2026
14	Proactive Approach	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Proactive Approach is a full-service Human Resources and Recruiting firm based in Columbus, Ohio.” Source: RevenueBase Database · checked Sep 30, 2026
15	Bloom Consulting Services	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	11-50	3 contacts →
	Indirect evidence “Bloom Consulting Services, LLC is a certified women-owned consulting and recruiting firm whose mission is to provide flexible staffing solutions to our clients, supporting…” Source: RevenueBase Database · checked Sep 30, 2026
16	Hirerq	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “HireRQ provides strategies and solutions that center around the hiring process.” Source: RevenueBase Database · checked Sep 30, 2026
17	Bellevuehrm	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “BellevueHRM is committed to elevating your HR function.” Source: RevenueBase Database · checked Sep 30, 2026
18	Abundance Leadership Consulting, LLC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Are you bleeding talent?” Source: RevenueBase Database · checked Sep 30, 2026
19	COREL	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Corel Consulting is a woman‑owned fractional HR firm in Columbus, Ohio, providing outsourced HR, payroll administration, talent acquisition, and compliance for small and mid-sized…” Source: RevenueBase Database · checked Sep 30, 2026
20	Circle Line Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence “Circle Line Partners is a boutique search firm that provides comprehensive search, recruiting, hiring, and on-boarding process solutions that are cost-effective and can be…” Source: RevenueBase Database · checked Sep 30, 2026
21	Diversified Recruiting	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “Diversified Recruiting is founded on virtues of honesty, credibility, awareness, openness, and creativity.” Source: RevenueBase Database · checked Sep 30, 2026
22	Full Speed HR	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “We help small businesses turn HR and their employee benefit plans into a competitive advantage through AI, strategy, and smarter systems.” Source: RevenueBase Database · checked Sep 30, 2026
23	Integrated HR Systems	Partial evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “HR Solutions – Integrated, Automated, and Applied Benefits Administration – A streamlined system that is easy to use for employees, HR admin, and benefits consultants.” Source: RevenueBase Database · checked Sep 30, 2026
24	Intelligent Recruiting Resources LLC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “Intelligent Recruiting Resources LLC Founded in 2004 and based in Columbus, Ohio, we are a Human Resource Consulting and Executive Search firm with a focus on all levels of…” Source: RevenueBase Database · checked Sep 30, 2026
25	Mahogany Search Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 30, 2026	1-10	1 contacts →
	Indirect evidence “About Us and How We’re Deliberately Different.” 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 advisors. 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 advisors.
Partial evidence: Its own public description names part of HR outsourcing advisors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name HR outsourcing advisors. 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 63 HR outsourcing advisors based in Columbus, United States

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HR outsourcing advisors based in Columbus, United States at a glance

As of Sep 30, 2026

31.7%Verified-email coverage

13.3Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole United States list rather than for Columbus, so it is reported there. Company counts and contact totals on this page are exact for Columbus, over 63 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 advisors, 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 Columbus, United States whose own description of what they do matches “HR outsourcing advisors”. 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 advisors), 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 advisors, and records with no verified work email. Companies headquartered outside Columbus 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, 267 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 advisors 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 advisors, 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 advisors are there based in Columbus, United States?

RevenueBase identified 63 HR outsourcing advisors headquartered in Columbus, 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?

MAN Power, headquartered in Columbus, tops this list with the largest team on record.

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

New York leads the United States with 464 headquartered companies, followed by Atlanta (283) and Houston (219). Columbus has 63.

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 267 verified decision-maker contacts tracked across these 63 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.