Casa Conejo is an unincorporated county island in Newbury Park, Ventura County, California, United States. It was the first planned community in Newbury Park and began building in 1960. When the city of Thousand Oaks incorporated 4 years later, the new developments in Newbury Park were incorporated into the city boundaries before being subdivided. The community is bordered by Old Conejo Road and US 101 to the north, Borchard Road to the south, Jenny Drive to the west, and Sequoia Middle School to the east. For statistical purposes, the United States Census Bureau has defined Casa Conejo as a census-designated place (CDP). The census definition of the area may not precisely correspond to local understanding of the area with the same name. The population was 3,249 at the 2010 census, up from 3,180 at the 2000 census. Casa Conejo is located in a roughly rectangle-shaped unincorporated area surrounded by the city of Thousand Oaks.

Newbury Park is a populated place and town in Ventura County, California, United States. Most of it lies within the western Thousand Oaks city limits, while unincorporated areas include Casa Conejo and Ventu Park. The town is located in Southern California around 8 miles (13 km) from the Pacific Ocean and has a mild year-round climate, scenic mountains, and environmental preservation. About 28,000 residents of Thousand Oaks reside in Newbury Park.