As of the 2000 census, there were 65,676 people, 24,688 households, and 18,219 families residing in the county. The population density was 45/km² (116/sq mi). There were 26,897 housing units at an average density of 18/km² (47/sq mi). The racial makeup of the county was 83.79% White, 13.33% Black or African American, 0.46% Native American, 0.35% Asian, 0.02% Pacific Islander, 1.14% from other races, and 0.91% from two or more races. 2.65% of the population were Hispanic or Latino of any race.
There were 24,688 households, out of which 34.80% had children under the age of 18 living with them, 60.00% were married couples living together, 10.40% had a female householder with no husband present, and 26.20% were non-families. 23.40% of all households were made up of individuals and 8.90% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.02.
In the county, the population was spread out with 24.90% under the age of 18, 8.80% from 18 to 24, 32.10% from 25 to 44, 23.10% from 45 to 64, and 11.10% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 103.10 males. For every 100 females age 18 and over, there were 101.80 males.
The median household income in the county was $37,405, and the median income for a family was $45,146. Males had a median income of $35,743 versus $23,389 for females. The per capita income for the county was $17,782. About 9.80% of families and 12.30% of the population were below the poverty line, including 16.20% of those under age 18 and 14.60% of those age 65 or over.