The Reid Park Zoo, founded in 1967, is a 24-acre city-owned and -operated nonprofit zoo located within Reid Park in Tucson, Arizona. The zoo features more than 500 animals. The zoo boasts approximately 500,00 visitors each year. Wikipedia Accredited by Association of Zoos and Aquariums (AZA) Nonprofit 501(c)(3) organization / Reid Park Zoological Society / EIN: 94-2379052