Animals · Facts & sources
5 sourced facts about zoos and aquariums, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answer209 million annual visitors
The figure comes from the association's 2024 economic impact survey of its members.
Source: Association of Zoos and Aquariums, Zoo and Aquarium Statistics (2024) aza.org
Answer$35 billion
The same 2024 survey found they support about 254,000 full-time jobs.
Source: Association of Zoos and Aquariums, Zoo and Aquarium Statistics (2024) aza.org
Answer1752
It was founded on July 31, 1752, and still welcomes about 2 million visitors a year.
Source: Tiergarten Schönbrunn (Vienna Zoo) (2025) zoovienna.at
Answerapproximately 10%
A USDA license is a legal requirement for exhibitors; AZA accreditation is a separate, voluntary credential that only about one in ten hold.
Source: Association of Zoos and Aquariums, Accreditation FAQs aza.org
Answer6,239 animals of 502 species
All of that fits on just 17 hectares at the world's oldest zoo.
Source: Tiergarten Schönbrunn (Vienna Zoo) (2025) zoovienna.at