Pine Bluff is the 10th largest city in the U.S. state of Arkansas. It is within and the county seat of Jefferson County. It has a total area of 46.60 square miles and coordinates at 34°13′N 92°1′W. The elevation is 220 feet above sea level. Estimated per capita income in 2015 was $16,926. It has Zip codes 71601, 71602, 71603.