Company lists · Data refreshed September 2026
Top 25 Zoos based in the United States
RevenueBase identified 266 zoos headquartered in the United States as of September 2026 and tracks 19,515 professional contacts across them, including 4,857 with verified work emails. Miami is the largest hub.
This list covers zoos 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 22, 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 zoos based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 798 contacts → | ||||
Indirect evidence “Empowering People.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 731 contacts → | ||||
Indirect evidence “As part of SeaWorld Parks & Entertainment™, SeaWorld® San Diego creates distinctive entertainment experiences that blend imagination with a passion for nature.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 635 contacts → | ||||
Indirect evidence “Adventure.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 545 contacts → | ||||
Indirect evidence “Home to over animals, representing 500 species, the Saint Louis Zoo is recognized worldwide for its innovative approaches to animal care and management, wildlife conservation…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 512 contacts → | ||||
Indirect evidence “At Shedd Aquarium, we spark compassion, curiosity and conservation for the aquatic animal world.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 500 contacts → | ||||
Indirect evidence “Vision We envision a world where wildlife and humans flourish together.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 470 contacts → | ||||
Indirect evidence “For more than 110 years, Woodland Park Zoo has been a cherished community resource and a unique urban oasis.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 441 contacts → | ||||
Indirect evidence “The mission of Brookfield Zoo Chicago is to inspire conservation leadership by connecting people to wildlife and nature.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 436 contacts → | ||||
Indirect evidence “Our Mission The Houston Zoo connects communities with animals, inspiring action to save wildlife.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 356 contacts → | ||||
Indirect evidence “San Antonio Zoo® is a non-profit 501(c)(3) organization committed to securing a future for wildlife.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 306 contacts → | ||||
Indirect evidence “The mission of the Fort Worth Zoo is to strengthen the bond between humans and the environment by promoting responsible stewardship of wildlife and ensuring diverse, high-quality…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 290 contacts → | ||||
Strong evidence “Consistently ranked as one of the world's top five zoos, Omaha's Henry Doorly Zoo and Aquarium is an independent not-for-profit organization accredited by the Association of Zoos…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 285 contacts → | ||||
Indirect evidence “The Dallas Zoo, established in is the largest zoological experience in Texas.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 282 contacts → | ||||
Indirect evidence “Oakland Zoo was established in 1922 and is managed by the Conservation Society of California, a 501(c)3 non-profit organization dedicated to the conservation of wildlife both…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 270 contacts → | ||||
Indirect evidence “As a non-profit charitable organization the Phoenix Zoo provides experiences that inspire people and motivate them to care for the natural world.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 255 contacts → | ||||
Indirect evidence “The Oregon Zoo connects communities to the wonder of wildlife to create a better future for all.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 240 contacts → | ||||
Indirect evidence “Zoo New England's mission is to inspire people to protect and sustain the natural world for future generations by creating fun and engaging experiences that integrate wildlife and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 237 contacts → | ||||
Indirect evidence “Escape to the Jacksonville Zoo and Gardens for the only walking safari in Northeast Florida.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 226 contacts → | ||||
Indirect evidence “We connect people to wildlife, inspiring our communities to conserve nature for future generations.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 226 contacts → | ||||
Strong evidence “Nashville Zoo at Grassmere is a 188-acre institution accredited by the Association of Zoos and Aquariums (AZA) whose mission is to inspire a culture of understanding and discovery…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 215 contacts → | ||||
Indirect evidence “Brevard Zoo's mission is “we share our joy of nature to help people and wildlife thrive.” To support that mission, we focus on providing world-class care to our animals, offering…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 213 contacts → | ||||
Indirect evidence “ZooTampa at Lowry Park is home to more than 1,300 animals and famous for having one of the most beautiful, tropical zoological settings in the world.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 192 contacts → | ||||
Indirect evidence “OUR MISSION The South Carolina Aquarium inspires conservation of the natural world by exhibiting and caring for animals, by excelling in education and research, and by providing…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 188 contacts → | ||||
Indirect evidence “The mission of the Fresno Chaffee Zoo inspires people to care for animals, create connections, build community and save wildlife.” Source: RevenueBase Database · checked Sep 22, 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: zoos. 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 zoos.
- Partial evidence
- Its own public description names part of zoos, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name zoos. 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 266 zoos based in the United States
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Zoos based in the United States at a glance
As of Sep 22, 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 266 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 zoos, 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 “zoos”. 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 zoos), 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 zoos, 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, 4,857 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 22, 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 zoos, 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 zoos are there based in the United States?
RevenueBase identified 266 zoos 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?
Columbus ZOO And Aquarium, headquartered in Powell, tops this list with the largest team on record.
Which city has the most zoos?
Miami leads with 4 headquartered companies, followed by Tucson (4) and Boston (3).
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 4,857 verified decision-maker contacts tracked across these 266 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 22, 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.