As of the census of 2000, there were 18,733 people, 6,629 households, and 4,680 families residing in the county. The population density was 27 people per square mile (10/km2). There were 7,836 housing units at an average density of 11 per square mile (4/km2). The racial makeup of the county was 57.49% Caucasian, 40.30% Black or African American, 0.32% Native American, 0.32% Asian, 0.02% Pacific Islander, 0.51% from other races, and 1.04% from two or more races. 3.20% of the population were Hispanic or Latino of any race.