Calabasas first appeared as a city in the
2000 U.S. census. The age distribution was 21.2% under the age of 18, 9.4% aged 18 to 24, 19.6% aged 25 to 44, 30.5% aged 45 to 64, and 19.4% aged 65 or older. The median age was 44.9 years. For every 100 females, there were 93.4 males, and for every 100 females age 18 and over there were 90.2 males age 18 and over. The whole population lived in households. There were 8,850 households, of which 33.4% had children under age 18. Of all households, 55.8% were married-couple households, 4.8% were
cohabiting couple households, 14.4% had a male householder with no spouse or partner present, and 25.0% had a female householder with no spouse or partner present. About 21.5% of households were one-person households, and 9.3% had one person aged 65 or older. The average household size was 2.63. There were 6,398
families (72.3% of all households).
2010 census The
2010 United States census reported Calabasas to have a population of 23,058. The population density was . The Census reported that 23,049 people lived in households, 9 lived in non-institutionalized group quarters, and none were institutionalized. Of 8,543 households, 3,320 (38.9%) had children under the age of 18 living at home, 5,124 (60.0%) were
opposite-sex married couples living together, 942 (11.0%) had a female householder with no husband present, 315 (3.7%) had a male householder with no wife present, 310 (3.6%) were
unmarried opposite-sex partnerships, and 31 (0.4%) were
same-sex married couples or partnerships. About 1,624 households (19.0%) were made up of individuals, and 525 (6.1%) consisted of someone living alone who was age 65 or older. The average household size was 2.70. There were 6,381
families (74.7% of all households); the average family size was 3.11. The population consisted of 5,841 people (25.3%) under age 18, 1,875 people (8.1%) age 18 to 24, 5,025 people (21.8%) age 25 to 44, 7,414 people (32.2%) age 45 to 64, and 2,903 people (12.6%) age 65 or older. The median age was 41.6 years. For every 100 females, there were 93.6 males. For every 100 females age 18 and over, there were 89.8 males age 18 and over. The 8,878 housing units averaged , of which 6,287 (73.6%) were owner-occupied, and 2,256 (26.4%) were occupied by renters. The homeowner vacancy rate was 1.2%; the rental vacancy rate was 5.2%. Around 17,769 people (77.1% of the population) lived in owner-occupied housing units and 5,280 people (22.9%) lived in rental housing units. According to the 2010 United States census, Calabasas had a median household income of $124,583, with 6.6% of the population living below the federal poverty line.
2000 census As of 2000,
Russian and
German were the most common ancestries.
Iran and
Canada were the most common foreign places of birth. ==Economy==