
In the 18th century, Spanish colonists arrived in southern California including Santa Clarita, founding mission settlements. The Tataviam lived in approximately 20 villages in the valley and surrounding areas including Piru, Agua Dulce, and Elizabeth Lake. About AD 450, the Tataviam arrived, displacing the Chumash people who previously inhabited the area. The oldest archaeological site in the area dates back to roughly 3000 BC. The Santa Clarita Valley has been settled for millennia before European arrival. The Santa Clarita welcome sign (on Newhall Avenue near the 14 freeway) in May 2010. The region was not widely referred to as Santa Clarita until the 1950s before this, it was unofficially referred to as the "Newhall–Saugus area" and the "Bonelli tract," after a family which owned land in the valley. The Santa Clarita Valley similarly differentiates itself from the Santa Clara Valley in Northern California.

The valley and the settlement later became known as "little Santa Clara" ("Santa Clarita" in the Spanish diminutive) to distinguish it from the Northern Californian city of Santa Clara and its accompanying Mission Santa Clara. The Santa Clara River was named by Spanish explorers for Saint Clare of Assisi.


Henry Mayo Newhall purchased the Rancho San Francisco in 1875 and established the towns of Saugus and Newhall. After Spanish colonists arrived in Alta California, the Rancho San Francisco was established, covering much of the Santa Clarita Valley. Human settlement of the Santa Clarita Valley dates back to the arrival of the Chumash people, who were displaced by the Tataviam circa 450 AD. It is located about 30 miles (48 km) northwest of downtown Los Angeles, and occupies 70.75 square miles (183.2 km 2) of land in the Santa Clarita Valley, along the Santa Clara River. With a 2020 census population of 228,673, it is the third-largest city by population in Los Angeles County, and the 17th-largest in the state of California. Clare") is a city in northwestern Los Angeles County, California. Santa Clarita ( / ˌ s æ n t ə k l ə ˈ r iː t ə/ Spanish for "Little St.
