As of the census of 2000, there were 164,614 people, 61,051 households, and 44,933 families residing in the county. The population density was 241 people per square mile (93/km²). There were 66,061 housing units at an average density of 97 per square mile (37/km²). The racial makeup of the county was 77.25% White, 19.16% Black or African American, 0.85% Native American, 0.89% Asian, 0.02% Pacific Islander, 0.93% from other races, and 0.91% from two or more races. 1.96% of the population were Hispanic or Latino of any race. 20.9% were of American, 8.8% Irish, 8.8% German, 8.8% English and 7.2% Scotch-Irish ancestry according to Census 2000.
There were 61,051 households out of which 35.40% had children under the age of 18 living with them, 56.10% were married couples living together, 13.30% had a female householder with no husband present, and 26.40% were non-families. 21.30% of all households were made up of individuals and 6.90% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.05.
In the county, the population was spread out with 26.30% under the age of 18, 9.50% from 18 to 24, 31.10% from 25 to 44, 22.80% from 45 to 64, and 10.40% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 94.00 males. For every 100 females age 18 and over, there were 90.20 males.
The median income for a household in the county was $44,539, and the median income for a family was $51,815. Males had a median income of $36,713 versus $24,857 for females. The per capita income for the county was $20,536. About 7.30% of families and 10.00% of the population were below the poverty line, including 12.10% of those under age 18 and 9.60% of those age 65 or over.