Company lists · Data refreshed September 2026

Top 11 Organizational development consulting firms based in Westport, United States

Name: Organizational development consulting firms based in Westport, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 26 companies tracked

RevenueBase identified 26 organizational development consulting firms headquartered in Westport, United States as of September 2026 and tracks 1,826 professional contacts across them, including 99 with verified work emails. New York is the largest hub.

This list covers organizational development consulting firms headquartered in Westport, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

26Companies

1,826Contacts tracked

99Verified emails

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The 11 largest organizational development consulting firms based in Westport, United States

Ranked by team size

Top 11 of 26 organizational development consulting firms based in Westport, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names organizational development consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	MCAPartial evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	n/a	1,650
	“MCAworks is a strategic marketing consulting firm passionately dedicated to helping our clients accelerate and sustain business growth.” Source: company website · checked Sep 5, 2026
2	AptmetricsPartial evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	51-200	90
	“APTMetrics provides Strategic Workforce Engineering to ensure that your organization has the right people, with the right skills, in the right roles, at the right time, to achieve…” Source: company website · checked Sep 5, 2026
3	The NEW England Consulting GroupStrong evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	11-50	29
	“The New England Consulting Group (NECG) is a strategy consulting firm for organizations that are, or wish to be, dedicated to consistent, profitable growth.” Source: company website · checked Sep 5, 2026
4	Playbook Coaching, LLCIndirect evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	4
	“Playbook Coaching, LLC is an executive coaching firm, specializing in coaching CEOs, leadership teams and emerging leaders.” Source: company website · checked Sep 5, 2026
5	Birkdale PartnersIndirect evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	3
	“Birkdale Partners is a full service, boutique management consultancy founded in 2018 by Andy Fennell, a McKinsey alum who set out to reframe the way we approach management…” Source: company website · checked Sep 5, 2026
6	GebanahPartial evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	3
	“Gebanah is a human capital consulting company uniquely dedicated to optimizing your firm’s culture.” Source: company website · checked Sep 5, 2026
7	Blom Leadership Coaching & Consulting & ConsultingPartial evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	2
	“BLOM Leadership Coaching & Consulting transforms leaders navigating unprecedented growth and complexity.” Source: company website · checked Sep 5, 2026
8	Epic 47Indirect evidence	Westport, MA, United StatesHQ checked Sep 5, 2026	11-50	2
	“EPIC Mamas \| EPIC 47 is a compilation of businesses.” Source: company website · checked Sep 5, 2026
9	Lift Strategic Partners, LLCIndirect evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	2
	“We help you execute focused strategies and develop meaningful partnerships, boosting your bottom line and growing your network.” Source: company website · checked Sep 5, 2026
10	Coleytown AdvisorsIndirect evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	1
	“Organizing ideas into actions and outcomes.” Source: company website · checked Sep 5, 2026
11	The Honest Advisor LLCPartial evidence	Westport, CT, United StatesHQ checked Sep 5, 2026	1-10	1
	“The Honest Advisor provides a confidential and highly customized approach to coaching, consulting, and connecting.” Source: company website · checked Sep 5, 2026

Showing 11 of 26 organizational development consulting firms based in Westport, United States

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Organizational development consulting firms based in Westport, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 2030 HQs

Contacts with mobile numbers

Sep 5, 2026Data 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 this city, so it is reported there. Company counts and contact totals on this page are exact for Westport, over 26 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 organizational development consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Westport, United States whose own description of what they do matches “organizational development consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among organizational development consulting firms, and records with no verified work email. Companies headquartered outside Westport 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 an evidence 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, 99 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 5, 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.

Organizational development consulting firms by metro in the United States

Frequently asked

How many organizational development consulting firms are there based in Westport, United States?

RevenueBase identified 26 organizational development consulting firms headquartered in Westport, 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?

MCA, headquartered in Westport, tops this list with the largest team on record.

Which city has the most organizational development consulting firms?

New York leads with 2030 headquartered companies, followed by Chicago (1259) and Atlanta (1253).

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 99 verified decision-maker contacts tracked across these 26 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 5, 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.