Earl Warren worked in the most populous state in the United States.
California ( [ kælᵻˈfɔːrnjə , _ - ni.ə ] , ) is the most populous state in the United States and the third most extensive by area . Florida is the third-most populous state in the United States . Earl Warren . Before holding these positions , he was the District Attorney for Alameda County , California , and the Attorney General of California .