Company lists · Data refreshed September 2026
Top 25 Land trust organizations based in the United States
RevenueBase identified 672 land trust organizations headquartered in the United States as of September 2026 and tracks 10,798 professional contacts across them, including 4,501 with verified work emails. Washington is the largest hub.
This list covers land trust organizations headquartered in the 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 20, 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.
The 25 largest land trust organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 660 contacts → | ||||
Indirect evidence “The East Bay Regional Park District is a system of beautiful parklands, open space, and trails in Alameda and Contra Costa counties east of San Francisco.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 554 contacts → | ||||
Indirect evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 531 contacts → | ||||
Strong evidence “Trust for Public Land (TPL) is a national nonprofit that works to connect everyone to the benefits and joys of the outdoors.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 312 contacts → | ||||
Indirect evidence “Whitewater is a 501(c)(3) nonprofit and outdoor lifestyle brand that facilitates outdoor access by lowering barriers and inspiring people to get outside.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 294 contacts → | ||||
Indirect evidence “Over acres, 94 miles of trails, 25 miles of river frontage, right at your doorstep.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 199 contacts → | ||||
Partial evidence “The Wilderness Society (TWS) is the leading conservation organization working to protect America’s wild places and public lands for the health of local communities, wildlife, and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 197 contacts → | ||||
Indirect evidence “Five Rivers MetroParks protects the region's natural heritage and provides outdoor experiences that inspire a personal connection with nature.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 171 contacts → | ||||
Indirect evidence “The NFF works with communities and organizations to conserve and enhance the watersheds, wildlife habitat and wild places across our 193-million-acre National Forest System.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 118 contacts → | ||||
Indirect evidence “The American Forest Foundation (AFF) is a national conservation organization that works to deliver clean water, wildlife habitat, carbon sequestration and storage, and sustainable…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 112 contacts → | ||||
Indirect evidence “Leave No Trace is a member-funded 501(c)(3) non-profit organization providing Leave No Trace programs, education, training, and outreach in all 50 states and more than 100…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 108 contacts → | ||||
Strong evidence “The Land Trust Alliance is the voice of the land trust community.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 106 contacts → | ||||
Indirect evidence “Maymont, located in the heart of Richmond, Virginia, is a well-preserved 100 acres where all are welcome to connect with history, nature, wildlife and each other.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 98 contacts → | ||||
Indirect evidence “Leroy Springs & Co.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 80 contacts → | ||||
Partial evidence “Natural Lands is dedicated to preserving and nurturing nature’s wonders while creating opportunities for joy and discovery in the outdoors for everyone.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 78 contacts → | ||||
Indirect evidence “Cincinnati Nature Center connects people of all ages with the natural world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 67 contacts → | ||||
Indirect evidence “For 25 years, the Santa Valley Open Space Authority – in partnership with community members, nonprofits, and other agencies – has contributed to the quality of life in our…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 64 contacts → | ||||
Indirect evidence “Founded in 1964, Delaware Nature Society works to improve the environment through conservation, advocacy, and education.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 63 contacts → | ||||
Indirect evidence “McHenry County Conservation District exists to preserve, restore and manage natural areas and open spaces for their intrinsic value and for the benefits to present and future…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 60 contacts → | ||||
Indirect evidence “In Maine, we are fortunate-nature is still big and bold, and it delivers stunning reminders that we are part of it.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 60 contacts → | ||||
Partial evidence “As innovative protectors and stewards of the land since 1963, Openlands exists to create access to nature for all.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 58 contacts → | ||||
Indirect evidence “Greening Youth Foundation (GYF) is a 501(c)3 non-profit organization whose mission is to nurture environmental stewardship among diverse youth and young adults.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 56 contacts → | ||||
Indirect evidence “Kalamazoo Nature Center is an environmental services company based out of Kalamazoo, Michigan.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 53 contacts → | ||||
Partial evidence “Maui Land & Pineapple Company, Inc.(NYSE: MLP) is dedicated to the thoughtful stewardship of over acres of land along with approximately square feet of commercial properties.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 52 contacts → | ||||
Partial evidence “Join the Western Reserve Land Conservancy Group for current updates and discussions!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 50 contacts → | ||||
Strong evidence “At The Land Trust Company, we bring over a century of expertise in land trust management and property protection.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: land trust organizations. 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 land trust organizations.
- Partial evidence
- Its own public description names part of land trust organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name land trust organizations. 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 672 land trust organizations based in the United States
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Land trust organizations based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 672 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 land trust organizations, 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 the United States whose own description of what they do matches “land trust organizations”. 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 land trust organizations), 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 land trust organizations, and records with no verified work email. Companies headquartered outside United States 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, 4,501 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 20, 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.
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 land trust organizations, 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 land trust organizations are there based in the United States?
RevenueBase identified 672 land trust organizations headquartered in the 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?
East BAY Regional Park District, headquartered in Oakland, tops this list with the largest team on record.
Which city has the most land trust organizations?
Washington leads with 7 headquartered companies, followed by Columbia (5) and Madison (5).
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 4,501 verified decision-maker contacts tracked across these 672 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 20, 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.
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