The Colorado Springs Post Office (ZIP Codes 80902 and 80913) serves Fort Carson postal addresses.
As of the census of 2000, there were 10,566 people, 1,679 households, and 1,620 families residing on the post. The population density was 1,126.8 people per square mile (434.9/km²). There were 2,664 housing units at an average density of 196.8/sq mi (75.9/km²). The racial makeup of the base was 62.75% White, 20.01% African American, 2.14% Asian, 1.67% Native American, 0.75% Pacific Islander, 7.94% from other races, and 3.75% from two or more races. Hispanic or Latino of any race were 15.39% of the population.
There were 1,679 households out of which 84.9% had children under the age of 18 living with them, 85.4% were married couples living together, 9.7% had a female householder with no husband present, and 3.5% were non-families. 3.2% of all households were made up of individuals, none of whom were 65 years of age or older. The average household size was 3.70 and the average family size was 3.74.
On the post the population was spread out with 27.5% under the age of 18, 37.1% from 18 to 24, 34.2% from 25 to 44, 1.2% from 45 to 64, and 0.1% who were 65 years of age or older. The median age was 22 years. For every 100 females there were 195.0 males. For every 100 females age 18 and over, there were 251.7 males.
The median income for a household on the post was $34,883, and the median income for a family was $34,385. Males had a median income of $19,865 versus $17,582 for females. The per capita income for the base was $12,772. About 7.8% of families and 9.4% of the population were below the poverty line, including 12.1% of those under the age of 18 and none of those 65 and older.