The park was originally donated to the County of Orange by James Irvine in 1897, making it the first regional park in the state.
The Orange County Zoo houses a variety of rescued animals, including mountain lions, black bears, and ocelots, that cannot be released back into the wild.
Irvine Regional Park is home to a colony of wild peacocks that roam the picnic grounds and parking areas.
The park features a narrow-gauge miniature train that has been a continuous operation since 1977.
The site sits on the edge of the historic Irvine Ranch, a massive land grant that once encompassed nearly 100,000 acres.
The park's lake is artificial and designed to provide a habitat for migratory waterfowl throughout the winter months.
It contains a series of historic stone bridges constructed during the Great Depression by the Works Progress Administration.
The hiking trails connect directly into the larger Santiago Oaks Regional Park, creating a multi-thousand-acre contiguous wilderness corridor.
Irvine Regional Park is California’s oldest regional park, established in 1897 and located in the foothills of the Santa Ana Mountains. The park spans 475 acres featuring a mix of native sycamore and oak groves alongside manicured lawns. It functions as a multipurpose recreation site offering paddle boat rentals on its central lake and a miniature railroad track. Visitors have access to the Orange County Zoo, which is situated entirely within the park boundaries and specializes in flora and fauna native to the southwestern United States. Equestrian trails weave through the surrounding Santiago Creek watershed. Recreational infrastructure includes multiple playgrounds, volleyball courts, and softball fields. Picnic areas are dispersed throughout the grounds, many shaded by mature trees. The park is managed by OC Parks and serves as a major trailhead for regional hiking and mountain biking networks.
The central lake bridge providing a view of the water with the foothills in the background.
Bring comfortable walking shoes to navigate between the dispersed lake, zoo, and hiking trailheads.
Arrive early on weekends, as parking areas near the playgrounds often reach capacity by midday.
Pack a cooler, as the park features numerous dedicated picnic sites with built-in barbecue grills.
Avoid visiting during the peak heat of summer afternoons, as shade can be limited in open sports field areas.
The park is open year-round, though the Orange County Zoo typically closes on certain holidays.
Dogs must be kept on a leash at all times; do not feed the local wildlife or peacocks.
