This is an incomplete list of existing zoos in the United States. For a list of aquaria, see List of aquaria in the United States, and for a list of nature centers, see List of nature centers in the United States.

Zoos are primarily terrestrial facilities where animals are held in enclosures and displayed to the public for education and entertainment. Animals may be bred, as well, to maintain captive populations and kept under veterinary care. These facilities include zoos, safari parks, animal theme parks, aviaries, butterfly zoos, reptile centers, and petting zoos, as well as wildlife sanctuaries and nature reserves where visitors are allowed. Zoos in the United States show great diversity in both size and collection. Many are notable for ongoing global wildlife conservation and captive breeding efforts, especially for endangered animal species.

Alabama

Alabama Gulf Coast Zoo, Gulf Shores Alabama Safari Park, Hope Hull Alabama Wildlife Center, Pelham Alligator Alley, Summerdale Auburn Raptor Center, Auburn Birmingham Zoo, Birmingham Montgomery Zoo, Montgomery Tigers For Tomorrow Exotic Animal Preserve, Inc., Attalla

Alaska

Alaska Raptor Center, Sitka Alaska Wildlife Conservation Center, Portage Alaska Zoo, Anchorage Fortress of the Bear, Sitka Reindeer Farm, Palmer The Kroschel Wildlife Center, Haines

Arizona

Arizona-Sonora Desert Museum, Tucson Bearizona, Williams Douglas Wildlife Zoo, Douglas Grand Canyon Deer Farm, Williams Heritage Park Zoological Sanctuary, Prescott Keepers of the Wild, Valentine Navajo Nation Zoological and Botanical Park, Window Rock Out of Africa Wildlife Park, Camp Verde Phoenix Zoo, Phoenix Phoenix Herpetological Sanctuary, Scottsdale Rattlesnake Ranch, Cave Creek Reid Park Zoo, Tucson Southwest Wildlife Conservation Center, Scottsdale Wildlife World Zoo, Litchfield Park

Arkansas

Arkansas Alligator Farm and Petting Zoo, Hot Springs Bill and Alice Nix Petting Zoo, Jonesboro Cockrills Country Critters Petting Zoo, Austin Little Rock Zoo, Little Rock Snake World, Berryville Turpentine Creek Wildlife Refuge, Eureka Springs

California

Avian Behavior International, Escondido Applegate Park Zoo, Merced Barry R. Kirshner Wildlife Sanctuary, Oroville (closed 2025) B Bryan Preserve, Point Arena Big Bear Alpine Zoo, Big Bear Lake California Living Museum, Bakersfield California Science Center, Los Angeles California Wolf Center, Julian Charles Paddock Zoo, Atascadero CuriOdyssey, San Mateo EcoVivarium, Escondido Feline Conservation Center, Rosamond Fellow Earthlings Wildlife Center, Morongo Valley Folsom City Zoo Sanctuary, Folsom Forever Wild Exotic Animal Sanctuary, Phelan Fresno Chaffee Zoo, Fresno Happy Hollow Park & Zoo, San Jose Hesperia Zoo, Hesperia Lions Tigers & Bears, Alpine Living Coast Discovery Center, Chula Vista Living Desert Zoo and Gardens, Palm Desert Los Angeles Zoo, Los Angeles Micke Grove Zoo, Lodi Montebello Barnyard Zoo, Montebello Monterey Zoo, Salinas Oakland Zoo, Oakland Orange County Zoo, Orange Palo Alto Junior Museum and Zoo, Palo Alto Parnell Storybook Zoo, Whittier Performing Animal Welfare Society, Galt Project Survival Cat Haven, Dunlap Sacramento Zoo, Sacramento Safari West, Santa Rosa San Diego Animal Sanctuary and Farm, Alpine San Diego Humane Society's Ramona Wildlife Center, Ramona San Diego Zoo, San Diego San Diego Zoo Safari Park, Escondido San Francisco Zoo, San Francisco Santa Ana Zoo, Santa Ana Santa Barbara Zoo, Santa Barbara Sequoia Park Zoo, Eureka Shambala Preserve, Acton, California Six Flags Discovery Kingdom, Vallejo Sugarplum Zoo, Temecula The Reptile Zoo, Fountain Valley The Teaching Zoo At Moorpark College, Moorpark Turtle Bay Exploration Park, Redding Ventana Wildlife Society, Salinas Wildlife Learning Center, Sylmar Wildlife WayStation, Sylmar William S. Hart Regional Park Wild Wonders, Bonsall Zoo to You, Paso Robles Zoomars at River Street Ranch, San Juan Capistrano

Colorado

Butterfly Pavilion, Westminster Cheyenne Mountain Zoo, Colorado Springs Colorado Gators Reptile Park, Mosca Colorado Wolf and Wildlife Center, Divide Denver Zoo, Denver Nature and Wildlife Discovery Center, Pueblo Pueblo Zoo, Pueblo Serenity Springs Wildlife Center, Calhan The Wild Animal Refuge, Springfield The Wild Animal Sanctuary, Keenesburg

Connecticut

Action Wildlife, Goshen Connecticut's Beardsley Zoo, Bridgeport Denison Pequotsepos Conservation Center, Mystic Eleanor Buck Wolf Nature Center, Wethersfield Highwire Deer & Animal Farm, Woodbury Ripley Waterfowl Conservancy, Litchfield Riverside Reptiles Education Center, Enfield R W Commerford & Sons, Goshen Sharon Audubon Center, Sharon Wildlife In Crisis, Weston

Delaware

3 Palms Zoo & Education Center, Clayton Barnhill Preserve of Delaware, Frankford Brandywine Zoo, Wilmington

District of Columbia National Zoological Park, Washington, D.C.

Florida

Alligator & Wildlife Discovery Center, Madeira Beach Animal Sanctuary & Alligator Park, Ochopee Amazing Animals Inc, Saint Cloud Animal EDventure Park & Safari, Boynton Beach Back to Nature Wildlife Refuge, Orlando Bear Creek Feline Center, Panama City Bearadise Ranch, Myakka City BF Petting Zoo, Thonotosassa Big Cat Rescue, Tampa Big Cat Habitat Gulf Coast Sanctuary, Sarasota Boyett’s Grove & Citrus Attraction, Brooksville Brevard Zoo, Melbourne Busch Gardens Tampa Bay, Tampa Busch Wildlife Sanctuary, Jupiter Calusa Nature Center and Planetarium, Fort Myers Carson Springs Wildlife Conservation Foundation, Gainesville C.A.R.E. Foundation, Apopka Central Florida Zoo and Botanical Gardens, Sanford Central Florida Animal Reserve, Saint Cloud Center for Great Apes, Wauchula Center for Conservation of Tropical Ungulates, Punta Gorda Chase Sanctuary and Wildife Conservancy, Webster Cool Zoo Wildlife Center, Orlando Croc Encounters, Tampa Dade City's Wild Things, Dade City Disney's Animal Kingdom, Bay Lake Emerald Coast Wildlife Refuge, Navarre Emerald Coast Zoo, Crestview Elmira's Wildlife Sanctuary, Inc., Wimauma Endangered Animal Rescue Sanctuary, Citra Exotic Animal Experience, Orlando Everglades Alligator Farm, Homestead Everglades Outpost, Homestead Everglades Safari Park, Miami Farmhouse Animal & Nature Sanctuary Inc, Myakka City Flamingo Gardens, Fort Lauderdale Florida Iguana and Tortoise Breeders, Davie Florida International Teaching Zoo, Bushnell Florida Exotic Bird Sanctuary Inc., Hudson, Florida Florida Exotic Species Reserve, Wesley Chapel Florida Madagascar Exotic Zoo and Sanctuary, West Palm Beach Gator Beach - The World's Greatest Alligator Park, Destin Gatorland, Orlando Gatorama, Palmdale Genesis Zoology Center, Auburndale Giraffe Ranch, Dade City Gulf Breeze Zoo, Woodlawn Beach Hardee County Wildlife Refuge, Zolfo Springs Homosassa Springs Wildlife State Park, Homosassa Springs HorsePower for Kids & Animal Sanctuary, Tampa Iguanaland, Punta Gorda Jacksonville Zoo and Gardens, Jacksonville Jungle Friends Primate Sanctuary, Gainesville Jungle Island, Miami Jungle Adventures, A Real Florida Animal Park, Christmas Kowiachobee Animal Reserve, Naples Lemur Conservation Foundation, Myakka City Lion Country Safari, Loxahatchee Lubee Bat Conservancy, Gainesville Mayhem Ranch, Morriston McCarthys Wildlife Sanctuary, West Palm Beach Miami Exotic Animals, Homestead Monkey Jungle, Miami Moore Exotic Animal Ranch, Riverview Myakka Elephant Ranch, Myakka City Nanny’s Educational Zoo, Lutz Natural Encounters Inc., Winter Haven Naples Zoo, Naples Ngala The Place Of The Lion, Naples North Florida Wildlife Center, Lamont Octagon Wildlife Sanctuary, Punta Gorda Odessa Animal Sanctuary, Odessa Palm Beach Zoo, West Palm Beach Panhandle Exotics, Pensacola Panther Ridge Conservation Center, Wellington Peace River Wildlife Center, Punta Gorda Petting Zoo Ocala, Ocala Romelia Farms Wildlife Preserve & Petting Zoo, Merritt Island Reptile Preservation Institute, Melrose Reptile World Serpentarium, St. Cloud River Ranch Petting Zoo, River Ranch Safari Bob’s, Lake Worth Beach Safari Wilderness Ranch, Lakeland Santa Fe College Teaching Zoo, Gainesville Sarasota Jungle Gardens, Sarasota Save the Chimps, Fort Pierce Seacrest Wolf Preserve, Chipley Shell Factory and Nature Park, Fort Myers Showcase of Citrus, Clermont Shy Wolf Sanctuary Education & Experience Center, Naples Single Vision Inc., Melrose Smooth Waters Wildlife Park, De Leon Springs St. Augustine Alligator Farm Zoological Park, St. Augustine Beach St. Augustine Wild Reserve, St. Augustine Suncoast Primate Sanctuary, Palm Harbor Survival Outreach Sanctuary, Spring Hill Tallahassee Museum, Tallahassee, Florida Tampa Bay Raptor Rescue, Clearwater Tarpon Springs Aquarium and Animal Sanctuary, Tarpon Springs The Catty Shack Ranch Wildlife Sanctuary, Jacksonville The National Elephant Center, Fellsmere Two Tails Ranch, Williston Wild Florida Drive-Thru Safari and Gator Park, Kenansville Wild Florida Sanctuary, Riverview Wildlife Crossing, Okeechobee Wildlife Survival Sanctuary, Spring Hill Wildlife Sanctuary of Northwest Florida, Pensacola Wonder Gardens, Bonita Springs Xtreme Exotics Wildlife Foundation, Jacksonville Zaksee Florida Bird Sanctuary, Tampa Ziggy’s Haven Bird Sanctuary, Inverness Zoo Miami, Miami Zoological Wildlife Foundation, Miami Zoo Nature Center, High Springs ZooTampa at Lowry Park, Tampa ZooWorld, Panama City Beach

Georgia

Atlanta Safari Park, Commerce Bainbridge Animal Park, Bainbridge Bear Hollow Zoo, Athens Center for Wildlife Education, Statesboro Chehaw Park, Albany Chestatee Wildlife Preserve and Zoo, Dahlonega Elephant Refuge North America, Attapulgus Georgia Safari Conservation Park, Madison Hand Me Down Zoo, Winder Incacheetoo Plantation and Petting Zoo, Waverly Iron P Homestead Zoo, Hogansville Lake Hartwell Wildlife Safari, Hartwell North Georgia Wildlife and Safari Park, Cleveland Noah's Ark Animal Sanctuary, Locust Grove Oatland Island Wildlife Center, Savannah Pettit Creek Farms, Cartersville Rome-Floyd ECO Center, Rome Tiger Stripes Inc, Quitman Wild Animal Safari, Pine Mountain Wild Georgia Safari Park, Metter Wild Adventures, Valdosta Yellow River Wildlife Sanctuary, Lilburn Zoo Atlanta, Atlanta

Hawaii

Honolulu Zoo, Honolulu Pana'ewa Rainforest Zoo, Hilo Three Ring Ranch Exotic Animal Sanctuary, Kailua-Kona

Idaho

Idaho Reptile Zoo, Boise Zoo Idaho, Pocatello Idaho Falls Zoo at Tautphaus Park, Idaho Falls Zoo Boise, Boise Snowdon Wildlife Sanctuary Inc, McCall World Center for Birds of Prey, Boise Yellowstone Bear World, Rexburg

Illinois

Aikman Wildlife Adventure, Arcola Big Run Wolf Ranch, Lockport Brookfield Zoo Chicago, Brookfield Browns Oakridge Zoo, Smithfield Cosley Zoo, Wheaton Henson Robinson Zoo, Springfield Lincoln Park Zoo, Chicago Lords Park Zoo, Elgin Miller Park Zoo, Bloomington Niabi Zoo, Coal Valley Peoria Zoo, Peoria Phillips Park Zoo, Aurora Randall Oaks Zoo, West Dundee Rainbow Ranch Petting Zoo, Nashville Santa's Village AZoosment Park, East Dundee Scovill Zoo, Decatur Snowman's Reindeer Farm, Canton Summerfield Zoo, Belvidere Treehouse Wildlife Center Inc, Dow Walnut Prairie Wildside, West Union Wildlife Prairie Park, Hanna City

Indiana

Black Pine Animal Sanctuary, Albion Columbian Park Zoo, Lafayette Exotic Feline Rescue Center, Center Point Fort Wayne Zoo, Fort Wayne Indianapolis Zoo, Indianapolis Mesker Park Zoo, Evansville Peaceable Primate Sanctuary, Winamac Potawatomi Zoo, South Bend Red Wolf Sanctuary and Raptor Rehabilitation Center, Rising Sun Sandy Oak Ranch Wildlife Adventure, Lake Village Stapp's Circle S Ranch, Greensburg TNT Exotics, Shelbyville Washington Park Zoo, Michigan City Wilstem Wildlife Park, Paoli Wolf Park, Battle Ground

Iowa

Ape Cognition and Conservation Initiative, Des Moines Blank Park Zoo, Des Moines Sunrise Children's Zoo, Waterloo Storybook Hill Children's Zoo, Dubuque

Kansas

Cedar Cove Feline Conservatory & Sanctuary, Louisburg Clay Center Zoo, Clay Center David Traylor Zoo of Emporia, Emporia Eagle Valley Raptor Center, Cheney Great Bend Zoo, Great Bend