Company lists · Data refreshed November 2026

Top 25 Leadership development nonprofits based in Seattle, United States

Name: Leadership development nonprofits based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 227 companies tracked

RevenueBase identified 227 company matches for leadership development nonprofits associated with Seattle, United States as of November 2026 and tracks 1,192 professional contacts across them, including 350 with verified work emails. Across the United States, New York is the largest hub for this category (796 companies); Seattle has 227.

This list covers company matches for leadership development nonprofits associated with Seattle, 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 November 6, 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 Nov 6, 2026 How this list was built

227Companies

1,192Contacts tracked

350Verified emails

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The 25 largest leadership development nonprofits based in Seattle, United States

Ranked by team size

Top 25 of 227 company matches for leadership development nonprofits based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Earthcorps	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	96 contacts →
	Exact match “EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Rainier Scholars	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	73 contacts →
	Exact match “Rainier Scholars cultivates students’ academic and leadership potential through rigorous, transformative opportunities that increase college graduation rates and empower new…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Leadership Tomorrow	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	n/a	47 contacts →
	Exact match “Leadership Tomorrow is the Puget Sound Region’s preeminent community leadership organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Camp Fire Central Puget Sound	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	33 contacts →
	Exact match “We inspire and enable youth of all backgrounds and abilities to discover their spark, value the natural world, and become tomorrow’s leaders, today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Alexander Hamilton Scholars	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	n/a	32 contacts →
	Exact match “We empower high-achieving, underserved young leaders to thrive in college and beyond through hands-on mentorship and a network of support, much like Hamilton had, so they, in…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Teens In Public Service	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	27 contacts →
	Exact match “Teens In Public Service (TIPS) is a 501(c)3 non-profit organization that offers youth, ages 15-19, rewarding and transformational work in the form of paid community service…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Henley Leadership Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	26 contacts →
	Exact match “For over 20 years, Henley Leadership Group in Seattle, Washington, has partnered in developing workplaces that energize people to produce extraordinary results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	RVC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	24 contacts →
	Exact match “Communities of color are left out of every important issue of the day, particularly in the Rainier Valley.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Rootspring	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	24 contacts →
	Exact match “We are nurturing a new generation of globally-minded leaders with the inner and outer resources to pursue lives of purpose and to advance social good.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Levelup Economy	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	21 contacts →
	Exact match “At LevelUp, we remove obstacles and build sustainable systems that fuel personal and collective success.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Community For Youth	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	19 contacts →
	Exact match “Community for Youth (CfY) is a 501(c)(3) nonprofit organization focused on youth mentorship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Scandiuzzi Krebs	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	13 contacts →
	Exact match “Scandiuzzi Krebs partners with nonprofit organizations working at the intersection of culture and community.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	The Service Board	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	13 contacts →
	Exact match “As a youth-led organization the Service Board (tSB) centers youth leadership in bridging opportunity and wellness gaps through lifelong mentorship, outdoor adventure, and social…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Giant Leap	Exact match	Seattle, United StatesHQ recorded Nov 6, 2026	1-10	10 contacts →
	Exact match “Giant Leap helps business leaders build the entrepreneurial lives they want to live through assessments, workshops, peer mentoring, and consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Cambridge Leadership Associates	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	10 contacts →
	Exact match “Cambridge Leadership Associates (CLA) is an international leadership development practice and the Home of Adaptive Leadership.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Mobilize Network	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	10 contacts →
	Exact match “The world is quivering, and we in it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Clover Search Works	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	9 contacts →
	Exact match “Clover Search Works provides a full range of search and leadership transition services for nonprofit organizations of all shapes and sizes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	NEX Foundation	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	9 contacts →
	Exact match “Founded in 2018, NEX Foundation is a 501(c)(3) nonprofit organization based in Seattle and Taipei, committed to supporting students and talents as they begin their career and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Clarity Compass Consulting	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	9 contacts →
	Exact match “Reimagine Leadership - Imagine a heart-centered transformation in which you identify blind-spots, unblock barriers, and create an authentic reality for yourself where grace, ease…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Perennial	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	8 contacts →
	Exact match “Perennial's mission is to reawaken the roots of leadership by fostering development in leaders of social change, enabling them to confront today's challenges with resilience and a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Common Great	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “Common Great is a woman-owned, woman-led collective that helps nonprofits build forward-looking development and communications practices that innovate and get results.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Sodo Consulting	Exact match	Seattle, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “Welcome to Sodo Consulting: Your Source for Leadership, Organizational and Team Development Excellence Is it time to turn your goals into reality?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Wa-Bloc	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “We are WA-BLOC, a community-based organization rooted in south Seattle with a mission to build and nurture intergenerational leaders through transformative education and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Totem Star	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	6 contacts →
	Exact match “Totem Star amplifies and empowers youth voice through music production and performance to strengthen life skills in leadership, civic engagement, and community building.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Nina Simonds Coaching LLC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	6 contacts →
	Exact match “NINA SIMONDS COACHING LLC is a leadership and team development firm based in Seattle, Washington.” Recorded in the RevenueBase company graph · Nov 6, 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 “leadership development nonprofits”. 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 227 leadership development nonprofits based in Seattle, United States

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Leadership development nonprofits based in Seattle, United States at a glance

As of Nov 6, 2026

29.4%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

196

11-50

51-200

501-1,000

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 227 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 Seattle, United States whose business descriptions match “leadership development nonprofits” 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 350 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 November 6, 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.

Leadership development nonprofits by metro in the United States

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 “leadership development nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many leadership development nonprofits are there based in Seattle, United States?

RevenueBase identified 227 company matches for leadership development nonprofits associated with Seattle, United States as of November 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?

Earthcorps 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 leadership development nonprofits?

New York leads the United States with 796 company records, followed by Washington (452) and Chicago (436). Seattle has 227.

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 350 professional contacts with verified work emails tracked across these 227 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 November 6, 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.