As of the census of 2000, there were 103,621 people, 30,775 households, and 23,081 families residing in the city. The population density was 13,703.8 people per square mile (5,292.1/km²), making it among the most densely populated cities in the country. There were 31,311 housing units at an average density of 4,140.9/sq mi (1,599.1/km²). The racial makeup of the city was 50.69% Asian (majority of them are Filipino Americans), 25.90% White, 4.56% African American, 0.44% Native American, 0.91% Pacific Islander, 11.32% from other races, and 6.19% from two or more races. Hispanic or Latino of any race were 22.27% of the population.
There were 30,775 households out of which 34.1% had children under the age of 18 living with them, 54.5% were married couples living together, 14.2% had a female householder with no husband present, and 25.0% were non-families. 18.1% of all households were made up of individuals and 6.7% had someone living alone who was 65 years of age or older. The average household size was 3.34 and the average family size was 3.78.
In the city the population was spread out with 22.5% under the age of 18, 10.5% from 18 to 24, 32.2% from 25 to 44, 22.8% from 45 to 64, and 12.0% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 96.8 males. For every 100 females age 18 and over, there were 94.3 males.
The median income for a household in the city was $62,310, and the median income for a family was $68,365. Males had a median income of $38,227 versus $32,147 for females. The per capita income for the city was $21,900. About 4.2% of families and 7.1% of the population were below the poverty line, including 7.4% of those under age 18 and 5.3% of those age 65 or over.
Daly City’s highway infrastructure includes State Routes 1, 35 and 82, and Interstate 280. Interstate 280, which bisects Daly City, is a primary transportation corridor linking San Francisco with San Mateo and Santa Clara counties.
The U.S. Census Bureau has identified Daly City as among the cities with the highest transit ridership. Public transportation is provided by SamTrans, BART (at the Daly City Station and the Colma Station, which abuts the Daly City limits), and some San Francisco Muni lines. Daly City is approximately eight miles south-west of downtown San Francisco and the San Francisco International Airport is nine miles south-east of Daly City; both are easily accessible by freeway or BART. In the 1980s planning was conducted for the BART extension south from San Francisco, the first step being the Daly City Tailtrack Project, upon which turnaround project the San Francisco Airport Extension would later build.