Travelers are voting Woodland Park Zoo as the best zoo in Seattle. There is 1 zoo in St. Helens a city just 123 km from Seattle. The most popular of these is Oregon Zoo in St. Helens. You can find 2 zoos in Washington and 88 zoos in the country of United States. Our members favorite in Washington is Woodland Park Zoo and Los Angeles Zoo is the top pick in United States. Want more? Check out our map of zoos in Seattle.