Oak Park was formed from ranchland owned by Cosmo Stevens and Marian Jordan, stars of the radio show Fibber McGee and Molly. The land was purchased by Metropolitan Development Corporation in the 1940s and ’50s.
Homes were developed starting in the late 1960s. Kanan Road (named after a local family) was the only access road to the community, from Agoura Hills, California in neighboring Los Angeles County. As such, the community was served by police and firefighters based in the nearest Ventura County city, Thousand Oaks, 10 miles (16 km) away, with L.A. County services responding when able.The Oak Park Unified School District was formed in June 1977. Oak Park High School opened for classes (initially grades 6-12) in the spring of 1981. The Oak Park Unified School District (OPUSD), has three elementary schools (K-5), a middle school (6-8), Oak Park High School (9-12), and Oak View High School (an alternative high school for ages 16 and above).
In September 2010, standardized public school test scores released by the state put Oak Park as the highest performing school district in Ventura County, and among the top districts in California.
In 1999 the United States Postal Service assigned Oak Park its own ZIP code, 91377.











