Company lists · Data refreshed September 2026

Top 25 Social impact consulting firms based in Seattle, United States

Name: Social impact consulting firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 111 companies tracked

RevenueBase identified 111 social impact consulting firms headquartered in Seattle, United States as of September 2026 and tracks 624 professional contacts across them, including 335 with verified work emails. Across the United States, New York is the largest hub for this category (432 companies); Seattle has 111.

This list covers social impact consulting firms headquartered in Seattle, 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 29, 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 29, 2026 86% judged on-target in blind review

111Companies

624Contacts tracked

335Verified emails

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The 25 largest social impact consulting firms based in Seattle, United States

Ranked by team size

Top 25 of 111 social impact consulting firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to social impact consulting firms: 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	Cascadia Consulting Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	51-200	110 contacts →
	Partial evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 29, 2026
2	Berk Consulting, INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	68 contacts →
	Indirect evidence “BERK is an interdisciplinary consultancy integrating strategy, planning, and policy development; financial and economic analysis; and facilitation, design, and communications.” Source: RevenueBase Database · checked Sep 29, 2026
3	ORS Impact	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “We nurture collaborations with our clients, bringing distinctive expertise in planning and measurement, strategy, and evaluation to their most vexing challenges.” Source: RevenueBase Database · checked Sep 29, 2026
4	Linksbridge	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “Linksbridge expands the capacity of NGOs, IGOs, and nonprofits to improve human lives.” Source: RevenueBase Database · checked Sep 29, 2026
5	AVO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “OUR STORY In the journey of brand building, we are the architects.” Source: RevenueBase Database · checked Sep 29, 2026
6	Intentional Futures	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	34 contacts →
	Indirect evidence “Why does Intentional Futures exist?” Source: RevenueBase Database · checked Sep 29, 2026
7	Formative	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	31 contacts →
	Indirect evidence “Driven by work that matters, we help our clients navigate the complex worlds of marketing, advocacy, and technology.” Source: RevenueBase Database · checked Sep 29, 2026
8	Kinetic West	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Strong evidence “Kinetic West is a social impact consulting firm.” Source: RevenueBase Database · checked Sep 29, 2026
9	Sankofa Consulting LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “Our team brings expertise in Monitoring, Evaluation, and Learning (MEL) across sectors and geographies, and experience engaging with non-profits of various sizes.” Source: RevenueBase Database · checked Sep 29, 2026
10	Paritii	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “A dynamic firm specializing in tech-enabled, data-driven strategies that deliver sophisticated, sustainable, and impactful solutions for businesses and communities.” Source: RevenueBase Database · checked Sep 29, 2026
11	The Ostara Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	11 contacts →
	Indirect evidence “The Ostara Group is an advisor to mission-driven nonprofits.” Source: RevenueBase Database · checked Sep 29, 2026
12	Alithi Management Consulting	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Alithi’s team of expert strategists, policy leaders, sourcing specialists, education reformers, community builders, data scientists, and impact experts have spent decades honing…” Source: RevenueBase Database · checked Sep 29, 2026
13	Intelligent Partnerships	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “Intelligent Partnerships, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
14	Break Blue Strategies	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Partial evidence “Break Blue Strategies is a full service consulting group focused on providing opportunities and services for organizations and campaigns centered on the values we share.” Source: RevenueBase Database · checked Sep 29, 2026
15	Common Great	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “Common Great is a woman-owned, woman-led collective that helps nonprofits build forward-looking development and communications practices that innovate and get results.” Source: RevenueBase Database · checked Sep 29, 2026
16	True Wind Collaborative	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Partial evidence “True Wind Collaborative is a consulting firm that designs and implements comprehensive strategic planning, stakeholder engagement, and communications programs in service of our…” Source: RevenueBase Database · checked Sep 29, 2026
17	Altruist Partners	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	11-50	6 contacts →
	Strong evidence “Altruist Partners helps mission-driven organizations of all types make even their most ambitious social impact goals a reality.” Source: RevenueBase Database · checked Sep 29, 2026
18	Archetekt	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “Your biggest strategic risk isn’t disruption.” Source: RevenueBase Database · checked Sep 29, 2026
19	Informed International	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Informed International is a monitoring, evaluation, and learning consulting firm focused on quantifying, examining, and improving the impact of development initiatives.” Source: RevenueBase Database · checked Sep 29, 2026
20	P5 Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
21	Imago, LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Imago is here to support you in becoming radically responsible for the talents that you have been given, so you can break the old systems that no longer serve us and build new…” Source: RevenueBase Database · checked Sep 29, 2026
22	Esgevolution	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “The new generation of corporate ESG leaders may have the most demanding remit yet: You've been tasked with stepping up rapidly in the midst of multiple global disruptions to…” Source: RevenueBase Database · checked Sep 29, 2026
23	BLUUM	Strong evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Strong evidence “Social impact marketing + creative agency” Source: RevenueBase Database · checked Sep 29, 2026
24	Luma Consulting, LLC	Partial evidence	Seattle, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Luma Consulting LLC works with nonprofit organizations and foundations that want assistance with strategic planning, developing nonprofit business plans, implementing new…” Source: RevenueBase Database · checked Sep 29, 2026
25	BIG House Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “Most companies don't lack talent or ideas.” Source: RevenueBase Database · checked Sep 29, 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: social impact consulting firms. 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 social impact consulting firms.
Partial evidence: Its own public description names part of social impact consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name social impact consulting firms. 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 111 social impact consulting firms based in Seattle, United States

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Social impact consulting firms based in Seattle, United States at a glance

As of Sep 29, 2026

53.7%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

Sep 29, 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 111 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 social impact consulting firms, 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 Seattle, United States whose own description of what they do matches “social impact consulting firms”. 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 social impact consulting firms), 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 social impact consulting firms, and records with no verified work email. Companies headquartered outside Seattle 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, 335 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 29, 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.

Social impact consulting firms 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 social impact consulting firms, 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 social impact consulting firms are there based in Seattle, United States?

RevenueBase identified 111 social impact consulting firms headquartered in Seattle, 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?

Cascadia Consulting Group, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most social impact consulting firms?

New York leads the United States with 432 headquartered companies, followed by Washington (309) and Chicago (233). Seattle has 111.

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 335 verified decision-maker contacts tracked across these 111 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 29, 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.