Los Angeles County, officially the
County of Los Angeles, and sometimes abbreviated as
L.A. County, is the most populous county in the United States, with 9,861,224 residents estimated in 2022. Its population is greater than that of 40 individual U.S. states. Comprising 88 incorporated cities and many unincorporated areas within a total area of 4,083 square miles (10,570 km
2), it is home to more than a quarter of Californians and is one of the most ethnically diverse U.S. counties. The county's seat, Los Angeles, is the second most populous city in the United States, with 3,822,238 residents estimated in 2022. The county has been world-renowned as the domicile of the U.S. motion-picture industry since the latter's inception in the early 20th century.