The California Highway Patrol (CHP) is the principal state police agency for the U.S. state of California. The CHP has primary patrol jurisdiction over all California highways and roads and streets outside city limits, and can exercise law enforcement powers anywhere within the state. The California Highway Patrol can assist local and county agencies and can patrol major city streets along with local and county law enforcement, state and interstate highways, and is the primary law enforcement agency in rural parts of the state.

Santa Clarita is a city in northwestern Los Angeles County in the U.S. state of California. With a 2020 census population of 228,673, it is the third-most populous city in Los Angeles County, the 17th-most populous in California, and the 103rd-most populous city in the United States. It is located about 30 miles (48 km) northwest of downtown Los Angeles, and occupies 70.75 square miles (183.2 km2) of land in the Santa Clarita Valley, along the Santa Clara River. It is a classic example of a U.S. edge city, satellite city, or boomburb.