Oak Park is an unincorporated community in southeastern Ventura County, California, United States.

For statistical purposes, the United States Census Bureau has defined Oak Park as a census-designated place (CDP).

It lies within a zone including the early Millingstone Horizon and inland Chumash Indians.

The sites in the area include major villages, smaller camps and several rock shelters.

The Chumash originally settled in Oak Park due to an abundance of natural resources, including fresh water, acorns and rabbit-hunting.

The music video “Everything Has Changed” [1] by Taylor Swift ft. Ed Sheeran was filmed at Oak Hills Elementary and Medea Creek Middle School.

[8][9] Oak Park was formed from ranchland owned by Jim and Marian Jordan, stars of the radio show Fibber McGee and Molly.

[16] 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).

In 1999 the United States Postal Service assigned Oak Park its own ZIP code, 91377.

[10] Oak Park previously shared the ZIP code 91301 with its neighboring town of Agoura Hills.

It is bordered on the west by North Ranch (Thousand Oaks) and on the south by the LA County cities of Agoura Hills and Westlake Village.

It borders the Santa Monica Mountains National Recreation Area to the east and north.

[19] It is bordered by the Santa Monica Mountains National Recreational Area on the north and east and Rancho Simi Open Space on the south.

(Does not include Simi Peak at 2,450 ft) The CDP has a total area of 5.29 sq mi (13.7 km2).

An Environmental Impact Assessment of Oak Park was conducted in 1982 which recorded local flora and fauna [24] 85 species of birds have been observed with breeding activity of 32-64 probable.

The turkey vulture (Cathartes aura) and the prairie falcon (Falco mexicanus) breed on adjacent slopes.

Cooper’s hawk (Accipiter cooperi) and northern harrier (Circus cyanus) may nest in Oak Park.

Golden eagles (Aquila chrysaetos) lack suitable nesting habitats and probably live in nearby areas.

Two non-raptor birds are classified as sensitive including coastal black-tailed gnatcatcher (Polioptila melanura californica).

Three species of amphibians were observed in Oak Park: western toad (Bufo boreas), Pacific treefrog (Hyla regilla), and bullfrog (Rana catesbeiana).

35 mammals may be present including bobcat (Felis rufus), coyote (Canis latrans), and desert cottontail (Sylvilagus auduboni).

The recorded flora during the last EIR of Oak Park included 202 vascular plant species distributed among 52 families.

Half are found in 5 families: sunflower(Asteraceace), grass (Poaceae), pea (Fabaceae), Mustard (Brassicaceae) and figwort (Scrophulariaceae).

A joint venture of Calleguas, Las Virgenes and the Triunfo built a pipeline and pump station in 1994 to distribute reclaimed water for landscaping and golf course irrigation.

Oak Park borders the Santa Monica Mountains National Recreation Area.