some numbers from the 2010 census to go with the CA maps dimondpark posted:
White:
Los Angeles - 1,086,908
San Diego - 589,702
San Francisco - 337,451
San Jose - 271,382
Sacramento - 161,062
Fresno - 148,598
Long Beach - 135,698
Oakland - 101,308
Black:
Los Angeles - 347,380
Oakland - 106,637
San Diego - 82,497
Sacramento - 64,967
Long Beach - 59,925
San Francisco - 46,781
Fresno - 37,885
San Jose - 27,508
Asian:
Los Angeles - 420,212
San Jose - 300,022
San Francisco - 265,700
San Diego - 204,347
Sacramento - 83,841
Oakland - 65,127
Fresno - 60,939
Long Beach - 58,268
Latino:
Los Angeles - 1,838,822
San Diego - 376,020
San Jose - 313,636
Fresno - 232,055
Long Beach - 188,412
Sacramento - 125,276
San Francisco - 121,774
Oakland - 99,068
Two or More Races:
Los Angeles - 76,353
San Diego - 42,820
San Francisco - 26,079
San Jose - 25,827
Sacramento - 21,111
Oakland - 14,076
Long Beach - 12,572
Fresno - 10,414
Native Hawaiian/Pacific Islander:
Sacramento - 6,392
San Diego - 5,178
Long Beach - 4,915
Los Angeles - 4,300
San Jose - 3,492
San Francisco - 3,128
Oakland - 2,081
Fresno - 663
American Indian/Alaska Native:
Los Angeles - 6,589
San Diego - 3,545
Fresno - 3,127
Sacramento - 2,586
San Jose - 2,255
San Francisco - 1,828
Long Beach - 1,349
Oakland - 1,214
Some other Race:
Los Angeles - 12,057
San Diego - 3,293
San Francisco - 2,494
San Jose - 1,820
Sacramento - 1,253
Oakland - 1,213
Long Beach - 1,118
Fresno - 984