Company lists · Data refreshed September 2026

Top 25 Conservation nonprofits based in Portland, United States

Name: Conservation nonprofits based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 51 companies tracked

RevenueBase identified 51 conservation nonprofits headquartered in Portland, United States as of September 2026 and tracks 699 professional contacts across them, including 355 with verified work emails. Washington is the largest hub.

This list covers conservation nonprofits headquartered in Portland, 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 19, 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 19, 2026 86% judged on-target in blind review

51Companies

699Contacts tracked

355Verified emails

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The 25 largest conservation nonprofits based in Portland, United States

Ranked by team size

Top 25 of 51 conservation nonprofits based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to conservation nonprofits: 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	Xerces Society For Invertebrate Conservation	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “We are an international nonprofit organization established in 1971, based in Portland, Oregon, with staff located in 16 different states.” Source: RevenueBase Database · checked Sep 19, 2026
2	Bird Alliance Of Oregon	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	59 contacts →
	Indirect evidence “Oregon wouldn’t be Oregon without Bird Alliance.” Source: RevenueBase Database · checked Sep 19, 2026
3	The Freshwater Trust	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “The Freshwater Trust is focused on using insight to solve problems at the intersection of water and the economy.” Source: RevenueBase Database · checked Sep 19, 2026
4	Bonneville Environmental Foundation BEF	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	46 contacts →
	Partial evidence “A national nonprofit, BEF empowers businesses to be in balance with the environment through a full suite of environmental products, educational and community engagement programs…” Source: RevenueBase Database · checked Sep 19, 2026
5	Sustainable Northwest	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “Sustainable Northwest forges community-led solutions that benefit nature, people, and local economies.” Source: RevenueBase Database · checked Sep 19, 2026
6	World Forestry Center	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	40 contacts →
	Partial evidence “Founded in 1964 in Portland, Oregon, World Forestry Center is a nonprofit dedicated to creating and inspiring champions of sustainable forestry.” Source: RevenueBase Database · checked Sep 19, 2026
7	FB Environmental Associates	Indirect evidence	Portland, ME, United StatesHQ checked Sep 19, 2026	11-50	28 contacts →
	Indirect evidence “Where Science Meets Civics" Our Mission: FB Environmental is dedicated to practical stewardship of our natural world.” Source: RevenueBase Database · checked Sep 19, 2026
8	SOLVE	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “SOLVE is a statewide, 501(c)(3) nonprofit organization with a mission to bring Oregonians together to improve our environment and build a legacy of stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
9	Friends Of The Columbia Gorge	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Keeping the Columbia Gorge wild and beautiful is the core of what we do.” Source: RevenueBase Database · checked Sep 19, 2026
10	Environment Oregon	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	25 contacts →
	Indirect evidence “Environment Oregon advocates on behalf of its more than members for clean air, clean water, and open space.” Source: RevenueBase Database · checked Sep 19, 2026
11	Western Rivers Conservancy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “SOMETIMES TO SAVE A RIVER, YOU HAVE TO BUY IT.” Source: RevenueBase Database · checked Sep 19, 2026
12	Oregon Wild	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Oregon Wild works to protect and restore Oregon’s wildlands, wildlife and waters as an enduring legacy for all Oregonians.” Source: RevenueBase Database · checked Sep 19, 2026
13	Ecology In Classrooms & Outdoors ECO	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	15 contacts →
	Indirect evidence “Ecology in Classrooms and Outdoors (ECO) is a tax-exempt, non-profit organization dedicated to presenting hands-on, ecology-based enrichment learning opportunities that are an…” Source: RevenueBase Database · checked Sep 19, 2026
14	Forest Park Conservancy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Portland’s Forest Park is one of the largest urban forests in the United States, with more than 100 species of native trees, 112 species of birds and more than 60 species of…” Source: RevenueBase Database · checked Sep 19, 2026
15	Crag LAW Center	Strong evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Crag Law Center is an environmental nonprofit based in Portland, Oregon that provides free and low cost legal services to conservation groups, grassroots activists, and Tribes…” Source: RevenueBase Database · checked Sep 19, 2026
16	Willamette Partnership	Strong evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Willamette Partnership is a conservation nonprofit based in Portland, Oregon.” Source: RevenueBase Database · checked Sep 19, 2026
17	Oregon League Of Conservation Voters	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “OLCV works to protect Oregon's natural legacy, elect pro-environment candidates, and hold our elected officials accountable.” Source: RevenueBase Database · checked Sep 19, 2026
18	Industrial Treatment Of Water LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Energy and Water Conservation & Sustainability” Source: RevenueBase Database · checked Sep 19, 2026
19	SEE Turtles	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “SEE Turtles protects endangered sea turtles around the world by supporting community-based conservation efforts to protect nesting beaches, promote conservation travel, get…” Source: RevenueBase Database · checked Sep 19, 2026
20	Defend Them ALL	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Our Mission The Defend Them All Foundation (DTA) is a 501(c)(3) nonprofit working to secure a better future for all animals and their habitats by preserving the symbiotic…” Source: RevenueBase Database · checked Sep 19, 2026
21	Oregon Parks Forever	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Oregon Parks Forever is a statewide nonprofit organization dedicated to raising funds to enhance the experience of using Oregon's parks & forests.” Source: RevenueBase Database · checked Sep 19, 2026
22	Coalition Of Oregon Land Trusts	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “You can call us COLT.” Source: RevenueBase Database · checked Sep 19, 2026
23	Earthrise LAW Center	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Earthrise’s mission is to preserve the environment by providing expert, pro bono legal services for conservation groups, and training highly talented law students through direct…” Source: RevenueBase Database · checked Sep 19, 2026
24	The Wetlands Conservancy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “The Wetlands Conservancy (TWC) is the only organization in Oregon dedicated to promoting community and private partnerships to permanently protect and conserve Oregon’s greatest…” Source: RevenueBase Database · checked Sep 19, 2026
25	Friends Of Katahdin Woods And Waters	Indirect evidence	Portland, ME, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “MISSION The mission of Friends of Katahdin Woods and Waters is to preserve and protect the outstanding natural beauty, ecological vitality and distinctive cultural resources of…” Source: RevenueBase Database · checked Sep 19, 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: conservation nonprofits. 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 conservation nonprofits.
Partial evidence: Its own public description names part of conservation nonprofits, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name conservation nonprofits. 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 51 conservation nonprofits based in Portland, United States

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Conservation nonprofits based in Portland, United States at a glance

As of Sep 19, 2026

50.8%Verified-email coverage

13.7Average contacts per company

1-10Median size (employees)

160.8%Largest-city concentration · Washington

Sep 19, 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 Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 51 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 conservation nonprofits, 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 Portland, United States whose own description of what they do matches “conservation nonprofits”. 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 conservation nonprofits), 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 conservation nonprofits, and records with no verified work email. Companies headquartered outside Portland 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, 355 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 19, 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.

Conservation nonprofits by metro in the United States

Conservation nonprofits in Washington82
Conservation nonprofits in New York56
Conservation nonprofits in Portland51
Conservation nonprofits in San Francisco43
Conservation nonprofits in Denver36
Conservation nonprofits in Seattle35
Conservation nonprofits in Los Angeles32
Conservation nonprofits in Atlanta30
Conservation nonprofits in Austin27
Conservation nonprofits in San Diego25

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 conservation nonprofits, 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 conservation nonprofits are there based in Portland, United States?

RevenueBase identified 51 conservation nonprofits headquartered in Portland, 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?

Xerces Society For Invertebrate Conservation, headquartered in Portland, tops this list with the largest team on record.

Which city has the most conservation nonprofits?

Washington leads with 82 headquartered companies, followed by New York (56) and Portland (51).

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 355 verified decision-maker contacts tracked across these 51 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 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 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.