Talking about the 2010 census, the Arkansasonline site has some good interactive maps.

Today's ADG has a story (subscription required) on population losses in Pine Bluff and Jefferson County. Pine Bluff lost 10.9 percent between 2000 and 2010, putting the city's population below 50,000 people. Everyone is wondering what that does to federal money, but no one knows, because no other Arkansas city has ever fallen below 50,000 once it passed that mark. The paper claims that most of the population loss consisted of white people who moved to the towns along I-530 like White Hall, Redfield, and Sulphur Springs.