Company lists · Data refreshed September 2026
Top 25 Nature centers based in the United States
RevenueBase identified 911 nature centers headquartered in the United States as of September 2026 and tracks 12,841 professional contacts across them, including 4,169 with verified work emails. New York is the largest hub.
This list covers nature centers 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 nature centers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 554 contacts → | ||||
Partial 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. | |||||
| 2 | 443 contacts → | ||||
Indirect evidence “Mission Be a catalyst!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 371 contacts → | ||||
Indirect evidence “The Detroit Zoological Society (DZS) is a nonprofit organization that operates the Detroit Zoo in Royal Oak, Mich.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 254 contacts → | ||||
Partial evidence “The North Carolina Museum of Natural Sciences is the largest museum of its kind in the Southeast.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 156 contacts → | ||||
Indirect evidence “Holden Forests & Gardens is made up of two of Northeast Ohio’s most important environmental and cultural institutions, the Holden Arboretum and Cleveland Botanical Garden, whose…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 144 contacts → | ||||
Strong evidence “The RMSC includes the RMSC Museum & Science Center, the RMSC Strasenburgh Planetarium, and the RMSC Cumming Nature Center.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 144 contacts → | ||||
Indirect evidence “Our mission is to connect people to the marine environment, inspiring a more sustainable future.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 142 contacts → | ||||
Partial evidence “Arizona Science Center has a rich history of exploration, innovation and collaboration.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 137 contacts → | ||||
Indirect evidence “The Museum of Life and Science is one of North Carolina’s top attractions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 130 contacts → | ||||
Partial evidence “Founded in 1916 as the Museum of Comparative Oology, the Santa Barbara Museum of Natural History has evolved to include more than 3.5 million specimens covering every aspect of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 129 contacts → | ||||
Partial evidence “The mission of Chabot Space & Science Center is to be a place for students of all ages to learn and be inspired about the Universe and our Planet Earth.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 118 contacts → | ||||
Partial evidence “Teton Science Schools connects people, place, and nature through education.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 107 contacts → | ||||
Partial evidence “The Virginia Living Museum connects people to the natural world through immersive exhibits, native wildlife, and hands-on conservation education.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 106 contacts → | ||||
Partial 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. | |||||
| 15 | 105 contacts → | ||||
Partial evidence “Moody Gardens is a public, non-profit educational destination utilizing nature in the advancement of rehabilitation, conservation, recreation, and research.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 101 contacts → | ||||
Partial evidence “A non-profit, year-round environmental education center on the coast of Maine in Wiscasset - offering summer camps, wilderness trips, a high school semester and school year…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 99 contacts → | ||||
Indirect evidence “Solar One is a non-profit, environmental education organization that fosters sustainable practices and environmental equity across New York City.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 88 contacts → | ||||
Partial evidence “The University of Texas at Austin's Lady Bird Johnson Wildflower Center inspires the conservation of native plants through its gardens and education, research and outreach…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 88 contacts → | ||||
Indirect evidence “At The Wilds, our mission is simple but powerful: Empowering People.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 86 contacts → | ||||
Partial evidence “The Chicago Academy of Sciences/Peggy Notebaert Nature Museum serves as an urban gateway to the world of nature and science.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 84 contacts → | ||||
Partial evidence “Fossil Rim Wildlife Center is dedicated to the conservation of species in peril, conducting scientific research, training of professionals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 83 contacts → | ||||
Partial evidence “Bayfront sanctuaries connecting people with air plants of the world, native nature, and our regional history.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 78 contacts → | ||||
Strong 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. | |||||
| 24 | 78 contacts → | ||||
Indirect evidence “Since our establishment in 1970, the Marine Science Institute has been at the forefront of environmental education in the San Francisco Bay Area.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 contacts → | ||||
Indirect evidence “The 118-acre Huntsville Botanical Garden is open year-round and contains a diverse ecosystem of meadows, upland and bottomland forest, and wetlands, as well as a variety of…” 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: nature centers. 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 nature centers.
- Partial evidence
- Its own public description names part of nature centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nature centers. 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 911 nature centers based in the United States
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Nature centers 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 911 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 nature centers, 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 “nature centers”. 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 nature centers), 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 nature centers, 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, 4,169 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 nature centers, 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 nature centers are there based in the United States?
RevenueBase identified 911 nature centers 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?
Mass Audubon, headquartered in Lincoln, tops this list with the largest team on record.
Which city has the most nature centers?
New York leads with 9 headquartered companies, followed by Austin (7) and Chicago (7).
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 4,169 verified decision-maker contacts tracked across these 911 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.