The Biggest Zoo in the U.S. (Plus 7 Other Gigantic Zoos)

Zoos in the United States are home to some of the largest and most impressive collections of wild animals in the world. They serve the dual purpose of letting kids and adults view the animals while also helping protect endangered species and educating the public on wildlife conservation efforts.

Here, we’ll look at the biggest zoo in the U.S.as well as some impressive selections that almost made the top rank.

For the purposes of this piece, we are ranking the largest zoos based on the number of viewable animal species in their collection, rather than another metric like the total land area of the zoo or the number of individual animal specimen. Where there were ties in species count, we subsequently ranked by acreage.