The 64-acre Oregon Zoo is located in Portland, a city and surrounding metropolitan area of 2.26 million people. Attendance in 2011 exceeded 1.6 million.
The nonprofit Oregon Zoo Foundation enhances community involvement with the zoo, primarily through member-based support. Each year it contributes between $4 and $5 million to help fund the zoo's work in conservation, education and animal welfare.
With ongoing renovations to existing facilities and with every new exhibit or system, the zoo aims to be a model of sustainable conservation of natural resources.