Poplar Bluff is a city located in Butler County Missouri. It is also the county seat of Butler County. With a 2020 population of 16,837, it is the 45th largest city in Missouri and the 2140th largest city in the United States . Poplar Bluff is currently declining at a rate of -0.30% annually and its population has decreased by -1.09% since the most recent census, which recorded a population of 17,023 in 2010. Poplar Bluff reached it's highest population of 17,139 in 1980. Spanning over 13 miles, Poplar Bluff has a population density of 1,281 people per square mile.
The average household income in Poplar Bluff is $45,177 with a poverty rate of 33.39%. The median rental costs in recent years comes to $677 per month, and the median house value is $92,400. The median age in Poplar Bluff is 35.6 years, 33 years for males, and 38.3 years for females.