Mile Square Regional Park 16801 Euclid St. Fountain Valley, CA 92708 United States email milesquare@ocparks.com phone 714-973-6600
William R. Mason Regional Park 18712 University Drive Irvine, CA 92612-2601 United States email masonpark@ocparks.com phone 949-923-2220
Laguna Niguel Regional Park 28241 La Paz Road Laguna Niguel, CA 92677 United States phone 949-923-2240
Laguna Coast Wilderness Park 18751 Laguna Canyon Road Laguna Beach, CA 92651 United States email lagunacoast@ocparks.com phone 949-923-2235
Irvine Ranch Open Space 13333 Black Star Canyon Rd Silverado, CA 92676 United States email irvineranchopenspace@ocparks.com phone 714-973-6696
Irvine Ranch Historic Park 13042 Old Myford Rd. Irvine, CA 92602 United States email ocparks@ocparks.com phone 714-973-6865
Heritage Hill Historical Park 25151 Serrano Road Lake Forest, CA 92630-2534 United States email heritagehill@ocparks.com phone (949) 923-2230
Harriett M. Wieder Regional Park 19251 Seapoint Ave. Huntington Beach, CA 92648 United States email unbic@ocparks.com phone 949-923-2250
George Key Ranch Historic Park 625 W. Bastanchury Road Placentia, CA 92870 United States email keyranch@ocparks.com phone (714) 973-3190
Featherly Regional Park 24001 Santa Ana Canyon Road Anaheim, CA 92808 United States email Ocparks@ocparks.com phone (714) 637-0210
