Pine Bluff, AR has a population of 45,404 and is the 905th largest city in the United States. The population density is 1,037 per sq mi which is 1770% higher than the Arkansas average and 1045% higher than the national average. The median age in Pine Bluff is 35 which is approximately 8% lower than the Arkansas average of 38. In Pine Bluff, 44% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 81% of Pine Bluff residents were born in Arkansas, 17% were born out of state, 0% were born outside of the United States and 1% were foreign born.