I've found a new site called TownMe.com that is supposed to be a little like Yelp for the towns too small/insignificant to be included in a Yelp/Citysearch/Menupages/etc. What it offers in addition to (and more interesting than) restaurant and activity listings is statistics on each town.
So of course I looked up Rogers, AR, my new homebase, and this is what I found:
Rogers: 94% white, America: 79% white
Rogers: 1% Asian, America: 3% Asian (so much smaller than I though even for the whole nation!)
Rogers: 0% Black, America: 13% Black
On the bright side, 18% of Rogers inhabitants speak Spanish at home in addition to English, vs 10% across America.
No sure as to the accuracy of these stats, but their other listings seem pretty correct: Arby's, Chili's, more chain restaurants, Borders, Barnes & Nobles, more chain stores...