Camarillo ( /ˌkæməriːoʊ/) is a city in Ventura County, California, United States. The population was 65,201 at the 2010 census, up from 57,084 at the 2000 census. The Ventura Freeway (U.S. Route 101) is the city's primary thoroughfare.
Camarillo is named for Adolfo and Juan Camarillo, two of the few Californios (pre-1848 California natives of Hispanic ancestry) to preserve the city's heritage after the arrival of Anglo settlers. As with most cities in Ventura County, it is noted for its resistance to new development. Some of the most desirable land in the city limits, located on the north and south sides of the Ventura Freeway, is "permanently" zoned for agricultural use. The construction in these zones shows the progress made towards erosion of this permanence. It is home to the Ventura County, California, Sheriff's Department Academy, as well as the department's other assets; such as the VCSD Air Unit, SWAT Unit, Bomb Squad, and Reserve Officer Academy.
Camarillo is located at 34°13′32″N 119°1′56″W / 34.22556°N 119.03222°W / 34.22556; -119.03222 (34.225607, -119.032207). According to the United States Census Bureau, the city has a total area of 19.5 square miles (50.6 km2). 0.015 square miles (0.040 km2) of the area (0.08%) is water.