Company lists · Data refreshed September 2026

Top 15 Environmental education organizations based in Seattle, United States

Name: Environmental education organizations based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 26 companies tracked

RevenueBase identified 26 company matches for environmental education organizations associated with Seattle, United States as of September 2026 and tracks 615 professional contacts across them, including 260 with verified work emails. Across the United States, Washington is the largest hub for this category (83 companies); Seattle has 26.

This list covers company matches for environmental education organizations 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 September 19, 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 19, 2026 How this list was built

26Companies

615Contacts tracked

260Verified emails

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The 15 largest environmental education organizations based in Seattle, United States

Ranked by team size

Top 15 of 26 company matches for environmental education organizations based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	University Of Washington, Environmental Studies	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	n/a	244 contacts →
	Exact match “The Program on the Environment is an innovative experiment in interdisciplinary environmental education combining natural science, the human dimension, and community-based…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Earthcorps	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	83 contacts →
	Exact match “EarthCorps cultivates leaders and community partnerships to advance environmental justice.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Washington Conservation Action	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	51 contacts →
	Exact match “Washington Conservation Action’s mission is to advocate for environmental progress and justice through actions that mobilize the public, elect champions for the environment, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	University Of Washington School Of Environmental And Forest Sciences	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	201-500	50 contacts →
	Exact match “The School of Environmental and Forest Sciences (SEFS) was established in 1907 as one of the oldest units on the University of Washington campus-and one of the original natural…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Camp Fire Central Puget Sound	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	29 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 · Sep 19, 2026 · View company records in RevenueBase
6	ECOSS	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	25 contacts →
	Exact match “Mission: ECOSS is devoted to promoting environmental justice and sustainability in an effort to build immigrant and refugee communities that can shape their environmental futures.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Pollution Prevention Resource Center	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “The Pollution Prevention Resource Center (PPRC), a 501(c)(3) nonprofit organization, is a leading source of high-quality, unbiased pollution prevention information.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Earthgen	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “EarthGen equips young people to become changemakers for a healthy environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Iseen Independent Schools Experiential Education Network	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1-10	12 contacts →
	Exact match “ISEEN is an international learning laboratory and networking opportunity through which independent school experiential educators, administrators, & classroom teachers can share…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Basilica BIO	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1-10	11 contacts →
	Exact match “How do we build resilience in frontline communities most affected by the environmental crisis?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Post84	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “POST 84 is a student-focused outdoor education organization that strives to encourage environmental awareness, leadership, diversity, self-confidence, and knowledge of the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Earthtalk	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1-10	5 contacts →
	Exact match “EarthTalk is a 501(c)3 non-profit launched in 2018 to leverage the power of the media to help everyday people understand complex environmental issues and become more responsible…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Sierra Club Washington State	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1-10	4 contacts →
	Exact match “Outreach, education, advocacy, and campaign design & implementation on environmental issues.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Killer Whale Tales	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1-10	3 contacts →
	Exact match “Killer Whale Tales is a 501 (c) 3 environmental education program that uses storytelling and field-based science to inspire students to take an active role in the conservation of…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Foxberry Education	Exact match	Seattle, United StatesHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “We are dedicated to providing hands-on learning opportunities in the field of environmental education.” Recorded in the RevenueBase company graph · Sep 19, 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 “environmental education organizations”. 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 15 of 26 environmental education organizations based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 260 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental education organizations based in Seattle, United States at a glance

As of Sep 19, 2026

42.3%Verified-email coverage

23.7Average contacts per company

1-10Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

201-500

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 26 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 “environmental education organizations” 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 260 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 19, 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.

Environmental education organizations 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 “environmental education organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental education organizations are there based in Seattle, United States?

RevenueBase identified 26 company matches for environmental education organizations associated with Seattle, 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?

University Of Washington, Environmental Studies 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 environmental education organizations?

Washington leads the United States with 83 company records, followed by New York (67) and Portland (33). Seattle has 26.

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 260 professional contacts with verified work emails tracked across these 26 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 19, 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.