People with Middle Eastern or North African roots must be counted as white in the federal government's data. But a study finds many do not see themselves as white, and neither do many white people.

The white population is still the largest racial group in the U.S. Whether it is declining depends on how you define "white." Narrow definitions, researchers warn, can be misleading and dangerous.

Driving through White, Georgia you might come upon what looks like a forest preserve. Look closer and you’ll see it’s actually a graveyard for rare and...