Zoos in the United States are not merely a source of entertainment; they play a role in conservation and education, housing thousands of animals. Facilities range from small local collections to expansive, world-class institutions. Modern American zoos increasingly emphasize habitat simulation, species preservation, and scientific research, with many participating in breeding programs for endangered animals such as red wolves, California condors, and various big cat species. Through interactive exhibits, guided tours, and educational programs, zoos aim to raise awareness about wildlife conservation and inspire visitors to care about ecosystems.
The largest zoos in the United States are sprawling wildlife parks that span hundreds or even thousands of acres. Topping the list is the San Diego Zoo Safari Park in California, known for its open-range habitats where animals roam freely in naturalistic settings. The Bronx Zoo in New York is the largest metropolitan zoo in the country, covering 265 acres and housing more than 6,000 animals. These massive facilities not only offer space for large species like elephants, giraffes, and rhinos but also play a major role in global breeding programs and wildlife conservation initiatives.
We’re taking a look at the 10 U.S. zoos with the greatest number of animals and recommending the best time to visit each. We also include fun facts and information about what makes these man-made attractions so very important.
10. Kansas City Zoo
- Animals: 1,700
- Species: 200
- Size: 202 acres
- First Opened: December 1909
- Most Popular Feature: Helzberg Penguin Plaza
- Mission Statement: Connects all people to each other and the natural world to promote understanding, appreciation, and conservation.
- Fun Fact: Best in the nation to see chimpanzees and kangaroos
- Location: 6800 Zoo Dr, Kansas City, MO 64132
- Hours: Monday-Friday 9:30 am – 4 pm, and Saturday-Sunday 9:30 am – 5 pm
9. Dallas Zoo
©Kevin1086 / CC BY-SA 3.0 - Original
- Animals: 2,000
- Species: 400
- Size: 106 acres
- First Opened: 1888
- Most Popular Feature: Wilds of Africa
- Mission Statement: Engaging people and saving wildlife.
- Fun Fact: First zoo in the southwest and the oldest in Texas
- Location: 650 S R.L. Thornton Fwy, Dallas, TX 75203
- Hours: 9 am – 5 pm daily
8. Smithsonian National Zoo
- Animals: 2,100
- Species: 400
- Size: 163 acres
- First Opened: 1889
- Most Popular Feature: Rubenstein Family Panda Habitat
- Mission Statement: We save species by using cutting-edge science, sharing knowledge, and providing inspirational experiences for our guests.
- Fun Fact: Admission is free!
- Location: 3001 Connecticut Ave NW, Washington, DC 20008
- Hours: 8 am – 6 pm daily
7. Riverbanks Zoo
- Animals: 3,000
- Species: 400
- Size: 170 acres
- First Opened: April 25th, 1974
- Most Popular Feature: Giraffe Overlook
- Mission Statement: To create meaningful connections and inspire actions that will have a lasting impact on conservation.
- Fun Fact: On the National Register of Historic Places.
- Location: 500 Wildlife Parkway, Columbia SC 29210
- Hours: 9 am – 5 pm daily, excluding Thanksgiving and Christmas
6. Zoo Miami
- Animals: 3,000
- Species: 400
- Size: 750 acres
- First Opened: 1948
- Most Popular Feature: Florida: Mission Everglades
- Mission Statement: Share the wonder of wildlife and help conserve it for generations to come
- Fun Fact: This is the only tropical zoological park in the United States!
- Location: 12400 SW 152 St. Miami, FL 33177
- Hours: 10 am – 5 pm daily
5. Minnesota Zoo
- Animals: Over 4,300
- Species: 505
- Size: 485 acres
- First Opened: May 22nd, 1978
- Most Popular Feature: Discovery Bay
- Mission Statement: Connect people, animals, and the natural world to save wildlife.
- Fun Fact: The first captive-born dolphin was born here.
- Location: 13000 Zoo Boulevard, Apple Valley, MN 55124
- Hours: 10 am – 4 pm daily
4. Columbus Zoo and Aquarium
©Scott Cornell/Shutterstock.com
- Animals: Over 10,000
- Species: Over 600
- Size: 580 acres
- First Opened: September 17th, 1927 (est.)
- Most Popular Feature: The Heart of Africa
- Mission Statement: To lead and inspire by connecting people and wildlife.
- Fun Fact: Wildlife celebrity and zookeeper Jack Hanna was the director from 1978 to 1993!
- Location: 4850 W Powell Road, Powell, OH, 43065
- Hours: Hours vary, check the official zoo website for seasonal hours.
3. Bronx Zoo
©littlenySTOCK/Shutterstock.com
- Animals: Over 10,000
- Species: Over 700
- Size: 265 acres
- First Opened: November 8th, 1899
- Most Popular Feature: Congo Gorilla Forest
- Mission Statement: Connect visitors to wildlife and inspire them to join our conservation work.
- Fun Fact: Established its full-time animal hospital in 1916, the first of its kind.
- Location: 2300 Southern Boulevard, Bronx, NY, 10460
- Hours: Monday-Friday 10 am-5 pm, and Saturday-Sunday 10 am-5:30 pm
2. San Diego Zoo
©HannaTor/Shutterstock.com
- Animals: 14,000
- Species: 700
- Size: 100 acres
- First Opened: December 11th, 1916
- Most Popular Feature: Panda Canyon
- Mission Statement: Committed to saving species worldwide by uniting our expertise in animal care and conservation science with our dedication to inspiring passion for nature.
- Fun Fact: A Kodiak bear named “Caesar” was one of the first animals at this site.
- Location: 2920 Zoo Dr, San Diego, CA 92101
- Hours: Hours vary by season, check the official website for current hours.
1. Henry Doorly Zoo
©evantravels/Shutterstock.com
- Animals: 17,000
- Species: 962
- Size: 160 acres
- First Opened: 1894
- Most Popular Feature: Lied Jungle (America’s largest indoor jungle).
- Mission Statement: To inspire, educate, and engage people to serve as lifelong stewards for the conservation of animals and their habitats.
- Fun Fact: This zoo is home to the Desert Dome, the world’s largest indoor desert. This is also the world’s largest geodesic dome!
- Location: 3701 S 10th St, Omaha, NE 68107
- Hours: Hours vary by season, check the official website for current hours.
Best Animals to See at Henry Doorly Zoo
©slowmotiongli/Shutterstock.com
Some of the best animals to see at the zoo include:
- African Elephants: Located in the African Grasslands exhibit, these majestic creatures are a must-see, with a spacious habitat that mimics their natural environment.
- Giraffes: Also found in the African Grasslands, you can get up close to these tall, graceful animals, especially during feeding times.
- Gorillas: The Hubbard Gorilla Valley offers an immersive experience where you can observe these intelligent primates in a large, naturalistic setting.
Best Zoo Animals to See: Giant Pandas
©Foreverhappy/Shutterstock.com
Visiting U.S. zoos offers the chance to see some of the world’s most fascinating animals up close, and among the top attractions are giant pandas. These rare and beloved bears, native to China, are famous for their distinct black-and-white fur and playful demeanor. Zoos like the Smithsonian’s National Zoo in Washington, D.C., and Zoo Atlanta have provided special panda exhibits that not only allow visitors to observe these gentle giants but also educate them about crucial conservation efforts. Giant pandas are a symbol of wildlife preservation, and their presence in zoos highlights the importance of protecting endangered species.
Best Zoo Animals to See: African Elephant
©Millie Bond - Copyright A-Z Animals
Another must-see animal in U.S. zoos is the African elephant. Known for their impressive size, intelligence, and complex social structures, African elephants captivate visitors of all ages. Zoos such as the San Diego Zoo and the Dallas Zoo have expansive habitats that mimic the elephants’ natural environments, providing them with ample space to roam, forage, and interact with each other. These exhibits often feature enrichment activities that stimulate the elephants mentally and physically, offering visitors a chance to see these magnificent creatures engaging in behaviors similar to those in the wild. Watching an elephant herd’s dynamic interactions offers a profound glimpse into their sophisticated social lives and emphasizes the need for global conservation efforts.
Best Zoo Animals to See: Siberian Tiger
©Gerckens-Photo-Hamburg/Shutterstock.com
The majestic Siberian tiger is another top animal to see in U.S. zoos. Known for their striking orange coats with black stripes and piercing eyes, these powerful predators are a testament to nature’s beauty and ferocity. Zoos like the Bronx Zoo in New York and the Minnesota Zoo have created extensive enclosures that simulate the tigers’ natural habitats, allowing these solitary cats to exhibit their natural behaviors, such as stalking and swimming. Educational programs and feeding demonstrations provide insights into the tigers’ lives, from their hunting techniques to their role in the ecosystem. Observing a Siberian tiger in a zoo setting not only leaves a lasting impression due to its sheer magnificence but also raises awareness about the critical need to protect these endangered animals from threats like poaching and habitat loss.
