Santa Clarita, officially the City of Santa Clarita, is the third largest city in Los Angeles County, California, and the 24th largest in the state of California. The city has annexed a number of unincorporated areas, contributing to the large population increase. It is located about 35 miles (56 kilometers) northwest of downtown Los Angeles, and occupies most of the Santa Clarita Valley. It is a notable example of a U.S. edge city or boomburb. Santa Clarita was ranked by Money magazine in 2006 as 18th of the top 100 places to live.

What's the best answer to this question: is santa clarita part of los angeles county?
yes