Unfortunately, my favorite restaurant in Bellingham closed down a few months ago. It made me very sad when I found out. Fairhaven Pizza was awesome.
My cousin goes to Western Washington University, so I'll ask her about specifics.
As for diversity, well, it's a college town, so it's more diverse than most places in Washington. There is a significant Native American population in the area as well as more than a few Asians. But like the rest of the state, it's pretty white
though that is changing.