As of the census of 2000, for Corona del Mar (which consists entirely of the 92625 zip code) there were 13,407 people, 6,885 households, and 3,957 families residing in the city. The population density was 1,997.8/km². The racial makeup of the city was 88.9% White, 0.3% African American, 0.2% Native American, 5.1% Asian, 0.3% Pacific Islander, 0.7% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 5.9% of the population.
There were 6,885 households out of which 17.9% had children under the age of 18 living with them, 47.9% were married couples living together, 5.1% had a female householder with no husband present, and 45.3% were non-families. 34.6% of all households were made up of individuals and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.05 and the average family size was 2.63.
In the city the population was spread out with 15.6% under the age of 18, 3.2% from 18 to 24, 31.4% from 25 to 44, 23.7% from 45 to 64, and 20.1% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 94.8 males. For every 100 females age 18 and over, there were 94.7 males.
The median income for a household in the city was $120,080, and the median income for a family was $150,323. Males had a median income of $99,000 versus $52,355 for females. The per capita income for the city was $96,704. About 5.0% of families and 3.8% of the population were below the poverty line, including 3.6% of those under age 18 and 5.0% of those age 65 or over
Despite its name, Corona del Mar High School is actually located in the neighborhood of Eastbluff.