Poplarville is a city located in Pearl River County Mississippi. It is also the county seat of Pearl River County. With a 2020 population of 2,863, it is the 84th largest city in Mississippi and the 6390th largest city in the United States . Poplarville is currently declining at a rate of -0.62% annually and its population has decreased by -1.07% since the most recent census, which recorded a population of 2,894 in 2010. Poplarville reached it's highest population of 2,977 in 2014. Spanning over 5 miles, Poplarville has a population density of 528 people per square mile.
The average household income in Poplarville is $53,347 with a poverty rate of 21.86%. The median rental costs in recent years comes to $545 per month, and the median house value is $116,600. The median age in Poplarville is 22.1 years, 25.7 years for males, and 20.6 years for females.