Like much of the fast-growing Inland Empire region, Rubidoux is rapidly changing from a rural area of quarries and dairy farms to an exurb of Los Angeles. As of the 2000 Census, Rubidoux is the largest unincorporated community in the Inland Empire and in Riverside County.
Flabob Airport (FAA identifier: RIR) in Rubidoux has a runway.
Population by year
(Z): Area returned as West Riverside
As of the census of 2000, there were 29,180 people, 7,991 households, and 6,464 families residing in the CDP. The population density was 3,186.5 people per square mile (1,230.0/km²). There were 8,497 housing units at an average density of 927.9/sq mi (358.2/km²). The racial makeup of the CDP was 51.77% White, 7.32% African American, 1.43% Native American, 2.24% Asian, 0.29% Pacific Islander, 32.02% from other races, and 4.93% from two or more races. Hispanic or Latino of any race were 54.29% of the population.
There were 7,991 households out of which 48.8% had children under the age of 18 living with them, 56.6% were married couples living together, 16.9% had a female householder with no husband present, and 19.1% were non-families. 14.4% of all households were made up of individuals and 5.2% had someone living alone who was 65 years of age or older. The average household size was 3.60 and the average family size was 3.94.
In the CDP the population was spread out with 36.0% under the age of 18, 10.3% from 18 to 24, 29.7% from 25 to 44, 17.3% from 45 to 64, and 6.7% who were 65 years of age or older. The median age was 28 years. For every 100 females there were 101.2 males. For every 100 females age 18 and over, there were 99.1 males.
The median income for a household in the CDP was $38,731, and the median income for a family was $40,019. Males had a median income of $32,252 versus $23,287 for females. The per capita income for the CDP was $13,912. About 17.2% of families and 20.8% of the population were below the poverty line, including 28.4% of those under age 18 and 8.8% of those age 65 or over.