According to the U.S. Census Bureau, the county has a total area of 854 km² (330 mi²). 845 km² (326 mi²) of it is land and 9 km² (3 mi²) of it is water. The total area is 1.06% water.
As of the census2 of 2000, there are 107,198 people, 44,195 households, and 29,478 families residing in the county. The population density is 127/km² (328/mi²). There are 47,779 housing units at an average density of 57/km² (146/mi²). The racial makeup of the county is 93.72% White, 3.82% Black or African American, 0.24% Native American, 0.73% Asian, 0.02% Pacific Islander, 0.51% from other races, and 0.97% from two or more races. 1.38% of the population are Hispanic or Latino of any race.
There are 44,195 households out of which 28.20% have children under the age of 18 living with them, 52.60% are married couples living together, 10.50% have a female householder with no husband present, and 33.30% are non-families. 27.80% of all households are made up of individuals and 9.70% have someone living alone who is 65 years of age or older. The average household size is 2.33 and the average family size is 2.85.
In the county, the population is spread out with 21.30% under the age of 18, 10.80% from 18 to 24, 30.00% from 25 to 44, 24.00% from 45 to 64, and 13.90% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 94.80 males. For every 100 females age 18 and over, there are 91.70 males.
The median income for a household in the county is $33,116, and the median income for a family is $41,162. Males have a median income of $30,874 versus $21,485 for females. The per capita income for the county is $19,085. 13.90% of the population and 10.20% of families are below the poverty line. Out of the total people living in poverty, 16.80% are under the age of 18 and 14.20% are 65 or older.