As of the census of 2000, there were 63,591 people, 23,593 households, and 16,019 families residing in the city. The population density was 692.2/km² (1,793.1/mi²). There were 24,790 housing units at an average density of 269.8/km² (699.0/mi²). The racial makeup of the city was 73.69% White, 4.31% African American, 0.94% Native American, 5.12% Asian, 0.23% Pacific Islander, 11.33% from other races, and 4.39% from two or more races. Hispanic or Latino of any race were 24.1% of the population. The approximate population is 72,008 (as of March 2008).
There were 23,593 households out of which 33.5% had children under the age of 18 living with them, 50.6% were married couples living together, 13.0% had a female householder with no husband present, and 32.1% were non-families. 26.0% of all households were made up of individuals and 9.2% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.18.
In the city the population was spread out with 26.2% under the age of 18, 10.7% from 18 to 24, 27.9% from 25 to 44, 22.7% from 45 to 64, and 12.6% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 89.4 males. For every 100 females age 18 and over, there were 85.4 males.
The median income for a household in the city was $58,155, and the median income for a family was $76,254. Males had a median income of $64,408 versus $52,122 for females. The per capita income for the city was $24,237. About 2.7% of families and 1.5% of the population were below the poverty line, including 8.5% of those under age 18 and 5.2% of those age 65 or over.
The 2008 population estimated by the California Department of Finance was 71,807.
Coming west from Los Angeles and heading east toward Palm Springs, The I-10 bisects the city in two, right through the middle. A tempestuous political battle occurred in the 1950s when three routes for the new freeway were considered, one north of town through the Lugonia district, the center route through the city, and a southern alignment through San Timoteo Canyon, parallelling the Southern Pacific railroad tracks. The central route was finalized in 1957 and Redlands Mayor Charles Parker cut the ceremonial ribbon to open the new interstate on August 28, 1962. The new State Route 210 or Foothill Freeway ends at The 10 in Redlands, then heads west toward Pasadena and Los Angeles. The San Bernardino line of the Greater Los Angeles regional transportation system called Metrolink has a stop in nearby San Bernardino. The San Bernardino based Omnitrans bus system which handles the bus service for the area serves Redlands.