Westlake Village is a city in Los Angeles County on its western border with Ventura County. The city is named after the master-planned community of Westlake Village. With a lake at the center, the community straddles the line between Los Angeles and Ventura counties. Roughly two-thirds of the community was annexed by the city of Thousand Oaks. In 1981, the remaining portion incorporated into the City of Westlake Village which became the 82nd municipality of Los Angeles County. The population of the city was estimated to be at 8,217 in 2019, down from 8,270 at the 2010 census.
About 3,000 years ago, Chumash Indians moved into the region and lived by hunting rabbits and other game, and gathering grains and acorns. On-going excavations, archaeological sites, and polychrome rock paintings in the area provide a glimpse into the social and economic complexity of the ancient Chumash world.
It is unknown when the first people settled in the area. A Chumash village was settled here in 500 BCE, known as Hipuc. The Chumash Indians gathered and prepared acorns and other seeds.