Look to the east

From SFGate:

Oakland, whose thriving African American community for decades shaped black identity for the nation, lost nearly a quarter of its black population in the past decade, U.S. Census data shows.

Now, Oakland has nearly as many white people as it does African American. It also has nearly as many Latinos.

The exodus left the city with a net loss of 33,000 African American residents and made Oakland one of the few big California cities to decline in size.

Unsurprising. I'm pretty sure I can tell you where many of them went.