Oak Park is a census-designated place located in Ventura County, California covered by census tracts 74.03 and 74.04. As of the 2000 census, those tracts had a total population of 14,625 people. It resides in the Conejo Valley, north from Malibu and Agoura Hills and is a part of Ventura County.
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.
In 1967 Ventura County officials who were concerned about the isolation of the community proposed a land swap with L.A. County, but they were rebuffed. The isolation—coupled with the distance to junior and senior high schools—also drove down the property values, and homeowners found it difficult to sell their properties.
The Ventura County Board of Supervisors created a Municipal Advisory Council (MAC) in 1975 to represent the community to County agencies. The MAC persuaded the Ventura County Board of Supervisors to trim Metropolitan Development Corp.'s initial development plan from a population of 26,000. Today there are about 15,000 residents. All available land within Oak Park has now been developed, with the remaining vacant land owned by the Rancho Simi Recreation and Park District.
The community was initially served by the Simi Valley Unified School District, with the nearest post-elementary schools being Sinaloa Junior High (about 20 miles (32 km) away) and Royal High (about 22 (35 km) miles away). Since the Simi Valley Unified School District had no plans to build post-elementary schools in Oak Park, the residents seceded and formed Oak Park Unified School District in June 1977. Oak Park High School opened for classes (initially grades 6-12) in the spring of 1981.
In 1999 the United States Postal Service assigned Oak Park its own ZIP code, 91377.
The CDP has a total area of 4.1 sq mi (10.6 km2). All of the area is land and none of it is covered by water. However, there are many small creeks in the area.
As of the census of 2000, there are 14,625 people in approximately 3,570 households. The population density is 3,567 people per square mile (1,393/km²). The racial makeup of the town is 92.41% White, 0.94% African American, 0.26% Native American, 6.41% Asian, 0.23% Pacific Islander, 1.16% from other races, and 2.59% from two or more races. 4.35% of the population are Hispanic or Latino of any race.
49.7% of the households have children under the age of 18 living with them, 76.7% are married couples living together, 9.2% have a female householder with no husband present, and 11.5% are non-families. 8.7% of all households are made up of individuals and 2.9% have someone living alone who is 65 years of age or older. The average household size is 3.11 and the average family size is 2.83.
In the town the population is spread out with 33% under the age of 18, 5.5% from 18 to 24, 25.2% from 25 to 44, 31.4% from 45 to 64, and 5% who are 65 years of age or older. The median age is 36.3 years. For every 100 females there are 97.8 males. For every 100 females age 18 and over, there are 94.4 males.
The median income for a household in the town is $92,921, and the median income for a family is $97,170. Males have a median income of $81,698 versus $42,083 for females. The per capita income for the town is $33,905. 7.5% of the population and 5.6% of families are below the poverty line. Out of the total people living in poverty, 8.4% are under the age of 18 and 0.0% are 65 or older.
Among residents age 25 or greater, 11% have no education beyond a high school diploma, 22% have some college education without earning a degree, 10% have an associate degree, 35% have a bachelor degree, and 18% have advanced degrees.
The community is served by the Oak Park Unified School District (OPUSD), which 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).
Oak Park High School offers baseball, boys and girls basketball, cheer, cross country, dance, football, golf, lacrosse, boys and girls soccer, softball, boys and girls tennis, track and field, and boys and girls volleyball. Oak park is in the Tri-Valley and Frontier League depending on the sport.