As of the census of 2007, there were 81,548 people, 17,620 households, and 14,307 families residing in the city. The population density was 2,711.3 people per square mile (1,046.7/km²). There were 18,087 housing units at an average density of 861.4/sq mi (332.5/km²). The racial makeup of the city was 65.22% White, 5.48% African American, 0.91% Native American, 8.14% Asian, 0.55% Pacific Islander, 13.08% from other races, and 6.63% from two or more races. Hispanic or Latino of any race were 27.69% of the population.
There were 17,620 households out of which 51.7% had children under the age of 18 living with them, 65.0% were married couples living together, 10.7% had a female householder with no husband present, and 18.8% were non-families. 14.4% of all households were made up of individuals and 4.9% had someone living alone who was 65 years of age or older. The average household size was 3.21 and the average family size was 3.56.
In the city the population was spread out with 34.4% under the age of 18, 7.5% from 18 to 24, 35.0% from 25 to 44, 16.7% from 45 to 64, and 6.4% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 100.2 males. For every 100 females age 18 and over, there were 96.3 males.
The median income for a household in the city was $62,794, and the median income for a family was $67,464. Males had a median income of $50,095 versus $35,143 for females. The per capita income for the city was $21,397. About 5.2% of families and 7.0% of the population were below the poverty line, including 7.2% of those under age 18 and 10.8% of those age 65 or over.
Tracy is served by Tracer, a local bus service. Tracy also has an Altamont Commuter Express (ACE) station, which provides commuter rail service to the San Francisco Bay Area.
Interstate 205 passes along the north side of the city and connects the nearby Interstates 580 and 5, with the three Interstates forming an iron triangle around much of the city. In addition, Business Loop 205 runs through the center of Tracy along 11th Street, formerly a portion of U.S. Highway 50.
Tracy is served by Tracy Municipal Airport, located south of the city. It serves general aviation; there is no scheduled airline service from the airport.