 By the middle of the 20th Century, the metropolitan areas of Chicago, Cleveland, Pittsburgh, New York City, San Francisco Bay Area and the region of Southern California had the largest populations of people with Croatian ancestry.Croatian immigrants first settled in the Western United States in the second half of the 19th century, mainly in what were then growing urban centers of Los Angeles, San Pedro, San Francisco, Phoenix and Santa Ana.It is estimated that more than 35,000 Croats live in Los Angeles metropolitan area today, making it the biggest Croatian community on the Pacific coast.