List of Zoos in the USA

Last updated 21 October 2026

There are 4,769 zoos in the USA, one in every 13,393 US companies. Most of them are small: four in five have one to four people, and only 133 firms employ 50 people or more. One in seventeen zoos is based in Miami, Austin, Brooklyn, Houston and Chicago. Below you find the largest zoos in the USA, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our US company database or through the Company Data API.

4,769 companies indexed · Data counted on 21 October 2026

Companies4,7691 in13,393 US companiesCities2,052Largest cityMiami 80Sole traders7%Employees1-4 (83%)Revenue< $100K (64%)Email31%Phone60%Website44%

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A live view of all 4,769 zoos, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Wildlife Conservation SocietyWildlife Conservation Society

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	Wildlife Conservation Society	USA	Bronx	2300 Southern Blvd	Bronx	10460-1090	wcs.*****	1895	$445,863,438	4,000	Corporation	16	152
2	Zoological Society Of San Diego	USA	San Diego	2920 Zoo Dr	San Diego	92101-1646	sandiegozoowildlifealliance.*****	1916	$437,607,695	2,300	Corporation	10	0083432
3	The Monterey Bay Aquarium Foundation	USA	Monterey	886 Cannery Row	Monterey	93940-1085	montereybayaquarium.*****	1978	$208,135,651	380	Corporation	2	0843295
4	Georgia Aquarium, INC.	USA	Atlanta	225 Baker St Nw	Fulton	30313-1809	georgiaaquarium.*****	2000	$165,667,302	410	Corporation	2	582574918
5	The New York Botanical Garden	USA	Bronx	2900 Southern Blvd	Bronx	10458-5153	nybg.*****	1891	$128,566,023	500	Corporation	2	96
6	Chicago Zoological Society INC	USA	Brookfield	3300 Golf Rd 653	Cook	60513	czs.*****	1921	$107,989,615	500	Corporation	2	15858630
7	The Columbus Zoological Park Association	USA	Powell	4850 Powell Rd	Coshocton	43065-7288	columbuszoo.*****	1930	$88,819,571	200	Corporation	4	140473
8	Monterey Bay Aquarium Research Institute	USA	Moss Landing	7700 Sandholdt Rd	Monterey	95039-9644	mbari.*****	1987	$86,286,917	220	Corporation	N/A	1196844
9	Houston Zoo, INC.	USA	Houston	6200 Hermann Park Dr	Harris	77030-1710	houstonzoo.*****	1967	$82,689,282	750	Corporation	2	0023110601
10	California Academy Of Sciences	USA	San Francisco	55 Music Concourse Dr	San Francisco	94118-4503	calacademy.*****	1853	$80,236,039	655	Corporation	2	0040179
11	Longwood Gardens, INC.	USA	Kennett Square	1001 Longwood Rd	Chester	19348-1913	longwoodgardens.*****	1970	$77,818,860	448	Corporation	N/A	0758227
12	The Atlanta Botanical Garden INC	USA	Atlanta	1345 Piedmont Ave Ne	Fulton	30309-3366	atlantabg.*****	1978	$76,001,816	60	Corporation	2	H809586
13	The Missouri Botanical Garden	USA	Saint Louis	4344 Shaw Blvd	St. Louis City	63110-2291	missouribotanicalgarden.*****	1859	$75,291,273	470	Corporation	6	430666759
14	National Aquarium, INC.	USA	Baltimore	501 E Pratt St	Baltimore City	21202	aqua.*****	1981	$74,375,786	350	Corporation	2	521121163
15	Shedd Aquarium Society	USA	Chicago	1200 S Lake Shore Dr	Cook	60605-2490	adtractionmedia.*****	1924	$72,658,567	287	Corporation	N/A	17398636
16	Zoological Society Of Cincinnati	USA	Cincinnati	3400 Vine St	Hamilton	45220-1333	cincinnatizoo.*****	1875	$69,378,528	320	Corporation	N/A	150228
17	Chicago Horticultural Society	USA	Glencoe	1000 Lake Cook Rd	Cook	60022	ohwow.*****	1890	$68,147,549	240	Corporation	N/A	05234816
18	The Saint Louis Zoo Association	USA	Saint Louis	1 Government Dr	St. Louis City	63110-1395	stlzoo.*****	1904	$63,311,338	50	Corporation	N/A	N00053264
19	San Antonio Zoological Society	USA	San Antonio	3903 N Saint Marys St	Bexar	78212-3173	sazoo.*****	1929	$61,090,159	275	Corporation	N/A	0005297101
20	Aquarium Of The Pacific	USA	Long Beach	100 Aquarium Way	Los Angeles	90802-8126	aquariumofpacific.*****	1997	$59,309,760	300	Corporation	3	1845304
21	Indianapolis Zoological Society, INC.	USA	Indianapolis	1200 W Washington St	Marion	46222-4552	indianapoliszoo.*****	1944	$57,679,714	215	Corporation	N/A	351074747
22	Wcs, INC.	USA	Colorado Springs	1515 N Academy Blvd Ste 400	El Paso	80909-2749	wcs.*****	1985	$55,281,197	2,800	Corporation	56	19871607404
23	New England Aquarium CORP	USA	Boston	1 Central Wharf	Suffolk	02110	neaq.*****	1957	$54,645,914	350	Corporation	2	042297514
24	The Seattle Aquarium Society Seas	USA	Seattle	1483 Alaskan Way	King	98101-2015	seattleaquarium.*****	1982	$54,098,416	12	Corporation	N/A	601024366
25	The Seattle Aquarium	USA	Seattle	1483 Alaskan Way Pier 59	King	98101-2015	seattleaquarium.*****	1994	$53,341,342	235		N/A	N/A

Showing 25 of 4,821 companies

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How many zoos are there in the USA?

Zoos in the USA

4,769

21 October 2026

There are 4,769 zoos in the USA in our data (21 October 2026). That is one in every 13,393 US companies. About 2 new firms are entered in the register every week this year (73 so far in 2026).

Structure

Single-site firms: 4,515 95%
Head offices: 76
Branch offices: 178

Classification

Our platform filter is SIC 8422.

2,924 of the 4,769 are corporations and LLCs (61%); 317 are sole traders. They come from the state business registers and our US register data, through the Company Data API.

Firm sizes in the USA

Of the 4,766 US zoos with a known headcount, 3,978 (83%) have one to four people, 415 have five to nine, 240 have ten to 49 and 133 have 50 or more. Most firms turn over under $100,000 a year (2,947, 64%).

EU size bands · the grey line shows all US companies

Micro under 104,393 92%
Small 10 to 49240 5%
Medium 50 to 249127 3%
Large 250+6 0.1%

Grey line: the share among all US companies (96% have under ten staff).

134

firms turn over more than $5 million a year; 84 more than $10 million.

firms were entered in 2026.

Largest zoos in the USA

The biggest firms by staff and by revenue, the largest in Miami. Click a name for the record.

Wildlife Conservation Society is the largest zoo in the USA by headcount. 133 firms employ 50 people or more; 87 employ 100 or more.

1Bronx4,000 staff
2San Diego2,300 staff
3Fort Worth785 staff
4Houston750 staff
5San Antonio658 staff
6Toa Alta500 staff
7Saint Louis470 staff
8Portland449 staff
9Kennett Square448 staff
10Brooklyn436 staff

By employee size · 4,766 firms with a known headcount

Employees	Firms	%
1-4	3,978	83%
5-9	415	9%
10-19	126	3%
20-49	114	2%
50-99	46	1.0%
100-199	42	0.9%
200-499	39	0.8%
500-999	4	<0.1%
1,000+	2	<0.1%

83% have 1 to 4 people; 114 have 20 to 49; 133 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	2,947	64%
$100K-$500K	1,276	28%
$500K-$1M	98	2%
$1M-$5M	134	3%
$5M-$10M	50	1%
$10M-$50M	55	1%
$50M-$100M	23	0.5%
$100M-$500M	6	0.1%

64% under $100,000; 134 between $1M and $5M; 134 above $5M.

Zoos in Miami

Miami has 80 zoos, <0.1% of all 702,216 Miami companies and 53% above the national share. Nine in ten Miami firms have fewer than five people; 1 has 50 or more. 2 new firms were entered in 2026, 1 dates from before 1990.

Size

1-4 staff: 72 · 90%
5-9: 5 · 6%
10-19: 2 · 3%
20-49: 0 · 0%
50+: 1 · 1%

Legal form

Sole traders: 4 · 5%
Partnerships: 1 · 1%
Corporations and LLCs: 62 · 78%
Other or none: 13 · 16%

Of the US total: 1.7%
Of all Miami companies: <0.1%
Against the national share: 1.5×

New

Entered 2026 so far: 2
Entered 2025: 18
Of USA's 2026 entries: 2.7%

Old

Before 1990: 1 · 1%
1990 or later: 79 · 99%
Of USA's pre-1990 firms: 0.3%

Reachable

Email: 10 · 13%
Phone: 24 · 30%
Website: 15 · 19%

Revenue (USD)

Under $100K: 57 · 73%
$100K-$500K: 18 · 23%
$500K-$1M: 2 · 3%
$1M and more: 1 · 1%

Largest

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Where in the USA?

Miami has the most zoos in the USA (80), ahead of Austin (58), Brooklyn (52), Houston (51) and Chicago (41). Together the five hold one in seventeen of them.

Cities by number of firms

2,052 US cities have at least one zoo; 65 have ten or more; 1,317 have exactly one. Click a city to set the lens.

How they compare

Next to related industries

There are 66 hotels for every zoo in the USA.

Industry	Firms	Website	1-4 staff
Hotels	317,099	42%	68%
Sports Companies	244,230	19%	92%
Spa Resorts	52,478	90%	90%
Theaters	38,604	40%	84%
Zoos	4,769	44%	83%
Swimming Pools	4,567	72%	82%

Free sample: zoos in North America

The oldest firms in the USA

Our data holds 10 US zoos from before 1900, 55 from before 1950 and 364 from before 1990.

1853
1. San Francisco
1859
1. Saint Louis
1874
1. Philadelphia
1875
1. Buffalo
1875
1. Cincinnati
1889
1. Atlanta

Older than you

Live tool

Move the slider to a year. Two live counts, scoped to this industry.

1990

364

US zoos date from before 1990

were entered in 1990

Newcomers in the USA in 2026

73 zoos were entered in the US register so far in 2026, about 2 a week, after 201 in 2025. The USA as a whole saw 2,970,531 new companies in 2026, so this industry takes <0.1% of the inflow.

1682022
1982023
1892024
2012025
732026 so far

73 of this year's 73 are corporations and LLCs.

The biggest newcomers of 2026

The year is the register entry; an established firm that changes legal form appears as new.

1Albuquerque3 staff
2Seattle2 staff
3Byhalia2 staff
4Decatur2 staff
5Azle2 staff

How reachable are they?

Zoos are easier to reach than the average US company: 60% list a phone number and 44% a website.

Email1,476 31%
Phone2,883 60%
Website2,087 44%

Grey line: all US companies (email 15%, phone 42%, website 24%).

The full list with these fields is in our US company database.

Sole traders or corporations: how they are organised

One in fifteen US zoos work as sole traders, against 5% of all US companies. Three in five are corporations and LLCs.

Sole traders3177%
Partnerships631%
Corporations and LLCs2,92461%
No form on record or other1,46531%

Single-site: 95%
Head offices: 76
Branches: 178

All US companies: 5% sole traders, 1% partnerships, 68% corporations and LLCs.

Frequently asked questions

How many zoos are there in the USA?

There are 4,769 zoos in the USA in our data, counted on 21 October 2026. That is one in every 13,393 US companies.

Which is the largest zoo in the USA?

Wildlife Conservation Society in Bronx, with 4,000 staff. By revenue Zoological Society of San Diego in San Diego leads with $437.6 million a year.

Which US city has the most zoos?

Miami, with 80, ahead of Austin (58), Brooklyn (52), Houston (51) and Chicago (41).

How many zoos are there in Miami?

80, which is <0.1% of all 702,216 Miami companies and 53% above the national share.

How big is a typical zoo?

Small. 83% of the 4,766 firms with a known headcount have one to four people; 133 have 50 or more. Most turn over under $100,000 a year.

Are US zoos sole traders or companies?

One in fifteen (317) are sole traders, 1% are partnerships and 61% (2,924) are corporations and LLCs.

How many zoos started in 2026?

73 were entered in the US register so far in 2026, after 201 in 2025. 73 of them are corporations and LLCs.

What is the oldest zoo in the USA?

California Academy of Sciences in San Francisco, 1853, followed by The Missouri Botanical Garden in Saint Louis (1859) and Zoological Society of Philadelphia in Philadelphia (1874). 10 firms date from before 1900.

Which industry code covers zoos?

Our platform filters them on SIC 8422 (arboreta and botanical or zoological gardens).

Can I download the full list?

Yes. All 4,769 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, by city

The lists closest to this one. Every industry and city in the USA is on the USA page.

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