Fort Scott's population was estimated to be 7,976 in the year 2006, a decrease of 321, or -3.9%, over the previous six years.
As of the census of 2000, there were 8,297 people, 3,481 households, and 2,081 families residing in the city. The population density was 1,529.4 people per square mile (590.0/km). There were 3,914 housing units at an average density of 278.3 persons/km (721.5 persons/sq mi). The racial makeup of the city was 91.53% White, 5.15% African American, 0.93% Native American, 0.53% Asian, 0.06% Pacific Islander, 0.40% from other races, and 1.41% from two or more races. 1.68% of the population were Hispanic or Latino of any race.
There were 3,481 households out of which 28.1% had children under the age of 18 living with them, 44.6% were married couples living together, 11.5% have a woman whose husband does not live with her, and 40.2% were non-families. 35.2% of all households were made up of individuals and 18.7% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.97.
In the city the population was spread out with 24.9% under the age of 18, 11.3% from 18 to 24, 23.7% from 25 to 44, 19.0% from 45 to 64, and 21.2% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 85.8 males. For every 100 females age 18 and over, there were 80.2 males.
The median income for a household in the city was $26,871, and the median income for a family was $34,531. Males had a median income of $25,919 versus $20,583 for females. The per capita income for the city was $14,997. About 10.9% of families and 16.3% of the population were below the poverty line, including 22.3% of those under age 18 and 12.9% of those age 65 or over.