Los Angeles, often referred to by its initials L.A., is the most populous city in the U.S. state of California. With an estimated 3,820,914 residents within the city limits as of 2023, it is the second-most populous city in the United States, behind only New York City; it is also the commercial, financial and cultural center of Southern California. Los Angeles has an ethnically and culturally diverse population, and is the principal city of a metropolitan area of 12.8 million people.