Bentonia's largest population count, 544, was recorded in 1970. Bentonia had sixty fewer residents in 2010 compared to 2000, and the 2015 estimate is another fourteen fewer. As of the census of 2000, there were 500 people, 203 households, and 130 families residing in the town. The population density was 366.0 people per square mile (140.9/km2). There were 214 housing units at an average density of 156.6 per square mile (60.3/km2). The racial makeup of the town was 62.80% White, 35.80% African American, 0.20% Asian, 0.20% from other races, and 1.00% from two or more races. Hispanic or Latino of any race were 0.40% of the population.