There's a small Indian reservation belonging to the Twentynine Palms Band of Mission Indians. The nearby Marine Corps Air Ground Combat Center Twentynine Palms was founded in 1952.
As of the census of 2000, there were 14,764 people, 5,653 households, and 3,855 families residing in the city. The population density was 269.3 inhabitants per square mile (104.0/km²). There were 6,952 housing units at an average density of 126.8 per square mile (49.0/km²). The racial makeup of the city was 71.0% White, 9.4% African American, 1.5% Native American, 3.8% Asian, 10.2% Pacific Islander, 6.2% from other races, and 6.4% from two or more races. Hispanic or Latino of any race were 14.9% of the population. The Hispanic population has increased 50% since the 2000 census.
There were 5,653 households out of which 39.1% had children under the age of 18 living with them, 49.8% were married couples living together, 13.7% had a female householder with no husband present, and 31.8% were non-families. 25.1% of all households were made up of individuals and 7.4% had someone living alone who was 65 years of age or older. The average household size was 2.6 and the average family size was 3.1.
In the city the population was spread out with 31.2% under the age of 18, 15.2% from 18 to 24, 28.4% from 25 to 44, 16.7% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 27 years. For every 100 females there were 101.8 males. For every 100 females age 18 and over, there were 98.7 males.
The median income for a household in the city was $31,178, and the median income for a family was $32,251. Males had a median income of $25,081 versus $25,141 for females. The per capita income for the city was $14,613. About 13.6% of families and 16.8% of the population were below the poverty line, including 25.3% of those under age 18 and 10.0% of those age 65 or over.