As of the census of 2000, there were 108,896 people, 32,253 households, and 25,931 families residing in the city. The population density was 3,076.3 people per square mile (1,187.7/km²). There were 33,488 housing units at an average density of 946.0/sq mi (365.2/km²). The racial makeup of the city was 78.21% White, 1.15% African American, 1.17% Native American, 4.29% Asian, 2.90% Pacific Islander, 8.75% from other races, and 3.53% from two or more races. Hispanic or Latino of any race were 18.48% of the population.
There were 32,253 households out of which 47.1% had children under the age of 18 living with them, 61.3% were married couples living together, 13.2% had a female householder with no husband present, and 19.6% were non-families. 14.7% of all households were made up of individuals and 3.9% had someone living alone who was 65 years of age or older. The average household size was 3.36 and the average family size was 3.71.
In the city the population was spread out with 33.7% under the age of 18, 12.9% from 18 to 24, 30.7% from 25 to 44, 17.4% from 45 to 64, and 5.4% who were 65 years of age or older. The median age was 27 years. For every 100 females there were 102.3 males. For every 100 females age 18 and over, there were 100.5 males.
The median income for a household in the city was $45,773, and the median income for a family was $48,593. Males had a median income of $32,116 versus $22,693 for females. The per capita income for the city was $15,031. About 6.7% of families and 8.7% of the population were below the poverty line, including 11.0% of those under age 18 and 3.5% of those age 65 or over.
West Valley City is on the same address grid system as Salt Lake City, and therefore also follows the same street numbering system. I-215 runs through eastern portions of the city parallel to I-15, which lies farther east of the city. The SR-201 freeway lies along the northern border with Salt Lake City and continues west into Magna as an expressway. Bangerter Highway, which runs south from Salt Lake City International Airport, traverses the approximate center of the city as well on its way to serving the rapidly-growing western and southern ends of the valley. The proposed Mountain View Corridor will also run through the western portion of the city. The city also is served by several bus routes operated by the Utah Transit Authority, and a future transit center (including a TRAX light rail station) will be located in the proposed city center near Valley Fair Mall and the E Center. Completion of the light rail line and transit center are expected by 2011.