People who have never been to L.A. really have no idea how insanely huge it is. Driving to my apartment from the start of city (before you even get to L.A. county) and having the city just keep going and going and going for two hours and not because of traffic jams is something you have to experience to truly understand.
California, Texas, Florida , New York , Pennsylvania, Illinois, Ohio , Georgia, North Carolina, and Michigan are the ten states that aren't less populated than LA county, to save anyone else who's curious from needing to look it up.