Poplarville is a city in Pearl River County, Mississippi, United States. As of the 2000 census, the city population was 2,601. It is the county seat of Pearl River County. It hosts an annual Blueberry Jubilee, which includes rides, craft vendors, and rodeos.
Poplarville is located at 30°50′26″N 89°32′2″W / 30.84056°N 89.53389°W / 30.84056; -89.53389 (30.840507, -89.534021).
According to the United States Census Bureau, the city has a total area of 3.9 square miles (10.0 km²), of which, 3.8 square miles (10.0 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.52%) is water.