Deeply blue Californiaâs top political figures, from the governor downward, portray the state as a model of multicultural integration. In fact, however, as a new study from UC-Berkeleyâs Othering & Belonging Institute reveals, most California metropolitan areas have high levels of racial segregation in housing and it has become more pronounced over the last two decades. Oddly, too, Californiaâs segregation tends to be highest in areas most likely to lean to the left politically. The Los Angeles-Long Beach-Santa Ana metropolitan area, the study found, is the nationâs sixth most segregated region of 200,000 residents or more. Other California areas with high levels of segregation include San Francisco-Oakland (25th), San Diego (38th), San Jose (45th) and Sacramento (82nd).