Double digit percentages for white, black, Hispanic and Asian populations

[Sbane]

Nicer neighborhoods in Pomona have those sorts of racial breakdowns (Philips Ranch area can be seen even with the current 2010 data on dave's app IIRC). There are just too many areas in California to name that have double digit percentages for Whites, Hispanics and Asians. It's just tough to find precincts that also have a high Black population. One factor is that California's black population is only 6% and going down even further. So basically the only places that meets the criteria are inland cities like Pomona, Rancho Cucamonga, Monrovia and Duarte. The problem with going too inland is that the quality of schools falls and the Asian population along with it.

In the bay area the places to check out would be the east bay from Hayward on north through to Vallejo and Fairfield. Most precincts here already will have double digit Asian, Hispanic and White residents, it's just a matter of finding the precincts with also a high enough Black population. Also a few places in San Joaquin County like parts of West Tracy and Stockton are likely to have these characteristics. Impossible to tell from the app though.

[Sbane]

There should be a ton of precincts within Sacramento County that should qualify. The whole county itself qualifies as well as the cities of Sacramento and Elk Grove.

[Sbane]

I must stop and ask... do Asian majority areas cause Black flight?

Were there a lot of Blacks there before? Plus Asian majority areas tend to have very inflated house prices. Look at the average price of a house in Arcadia and compare it to everywhere around it. And Asians will do anything to move there to get the school district. Blacks are more concerned about finding a safe neighborhood where they can get a bigger place. Generally speaking obviously.

[Sbane]

And Diamond Bar has much lower housing prices than the other cities you listed, mostly because they are closer to LA. It is still higher than it's surrounding areas like Pomona or Chino, but it's not unreasonable and the community is very nice with very low crime and excellent schools.

[Sbane]

I must stop and ask... do Asian majority areas cause Black flight?

I was checking out some areas nearby Arcadia which have a high hispanic population like Baldwin park and El Monte. Both those places have below 1% Black populations.