Clifton Forge was an independent city during the 2000 census. However, in 2001, Clifton Forge gave up its city status and reverted to a town.
According to the United States Census Bureau, the town has a total area of 8.0 km² (3.1 mi²). None of the area is covered with water.
As of the census of 2000, there are 4,289 people, 1,841 households, and 1,146 families residing in the town. The population density is 535.9/km² (1,387.5/mi²). There are 2,069 housing units at an average density of 258.5/km² (669.3/mi²). The racial makeup of the town is 82.96% White, 14.62% African American, 0.09% Native American, 0.05% Asian, 0.00% Pacific Islander, 0.49% from other races, and 1.80% from two or more races. 0.89% of the population are Hispanic or Latino of any race.
There are 1,841 households out of which 26.1% have children under the age of 18 living with them, 43.4% are married couples living together, 14.9% have a female householder with no husband present, and 37.7% are non-families. 34.4% of all households are made up of individuals and 19.6% have someone living alone who is 65 years of age or older. The average household size is 2.22 and the average family size is 2.80.
The town's age distribution is: 21.1% under the age of 18, 6.7% from 18 to 24, 25.4% from 25 to 44, 23.2% from 45 to 64, and 23.7% who are 65 years of age or older. The median age is 43 years. For every 100 females there are 78.9 males. For every 100 females age 18 and over, there are 74.0 males.
The median income for a household in the town is $26,090, and the median income for a family is $31,509. Males have a median income of $27,829 versus $21,039 for females. The per capita income for the town is $15,182. 19.4% of the population and 15.1% of families are below the poverty line. Out of the total people living in poverty, 39.4% are under the age of 18 and 10.5% are 65 or older.