Jonesboro is a town in and the parish seat of Jackson Parish in the northern portion of the U.S. state of Louisiana. The population was 3,914 at the 2000 census. It is part of the Ruston Micropolitan Statistical Area.
Jonesboro is located at 32°14′23″N 92°42′41″W / 32.23972°N 92.71139°W / 32.23972; -92.71139 (32.239611, -92.711501). According to the United States Census Bureau, the town has a total area of 4.9 square miles (12.7 km²), of which, 4.8 square miles (12.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.82%) is water.
As of the census of 2000, there were 3,914 people, 1,602 households, and 1,012 families residing in the town. The population density was 806.6 people per square mile (311.6/km²). There were 1,852 housing units at an average density of 381.7 per square mile (147.4/km²). The racial makeup of the town was 54.01% White, 45.02% African American, 0.15% Native American, 0.33% Asian, 0.03% from other races, and 0.46% from two or more races. Hispanic or Latino of any race were 0.43% of the population.