Orange County is a county located in the Los Angeles metropolitan area in Southern California, United States. As of the 2020 United States census, the population was 3,186,989, making it the third-most-populous county in California, the sixth-most-populous in the United States, and more populous than 19 U.S. states and Washington, D.C. Although largely …Orange County is a county located in the Los Angeles metropolitan area in Southern California, United States. As of the 2020 United States census, the population was 3,186,989, making it the third-most-populous county in California, the sixth-most-populous in the United States, and more populous than 19 U.S. states and Washington, D.C. Although largely suburban, it is the second-most-densely-populated county in the state behind San Francisco County. The county's three most-populous cities are Anaheim, Santa Ana, and Irvine, each of which has a population exceeding 300,000. Santa Ana is also the county seat. Six cities in Orange County lie along the Pacific Coast: Seal Beach, Huntington Beach, Newport Beach, Laguna Beach, Dana Point, and San Clemente.
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