Agoura Hills is a city in the Santa Monica Mountains region of Los Angeles County, California, United States. Its population was 20,330 at the 2010 census, which decreased to 20,299 in 2020. It is in the eastern Conejo Valley between the Simi Hills and the Santa Monica Mountains. The city is in western Los Angeles County and is bordered to the north by Bell Canyon and Ventura County. It is 35 miles (56 km) northwest of Downtown Los Angeles and less than 10 miles (16 km) west of the Los Angeles city limits at Woodland Hills. Agoura Hills and unincorporated Agoura sit next to Calabasas, Oak Park, and Westlake Village.