The Stamford Advocate did a pictorial essay of the most diverse cities in America. All the cities stood out for being minority majority cities. And all the cities stood out for the roughly equal number of Asian American/Pacific Islanders, African American, Hispanics and whites.
Some of the cities you may have never heard of. Half the cities were in California. Surprisingly, San Francisco and Los Angeles were not on the list. The cities listed were not necessarily the largest in population, just the most diverse.
The most diverse city in America is Vallejo, California (pictured left) which is a little bit more than half way between San Francisco and the state capital of Sacramento.
The city is 23.7% Hispanic/Latino; 24.1% white; 21% black; 24.5% Asian/Pacific islander.
You can see the rest of the top ten in the Stamford Advocate.
You can read the entire study from Nerd Wallet.