}}
2020 census As of the
2020 census, San Carlos Park had a population of 18,563. The median age was 34.6 years. 22.2% of residents were under the age of 18 and 11.6% of residents were 65 years of age or older. For every 100 females there were 106.5 males, and for every 100 females age 18 and over there were 106.2 males age 18 and over. There were 6,650 households in San Carlos Park, of which 33.8% had children under the age of 18 living in them. Of all households, 45.9% were married-couple households, 21.1% were households with a male householder and no spouse or partner present, and 22.4% were households with a female householder and no spouse or partner present. About 18.7% of all households were made up of individuals and 6.9% had someone living alone who was 65 years of age or older. There were 7,255 housing units, of which 8.3% were vacant. The homeowner vacancy rate was 0.7% and the rental vacancy rate was 9.4%.
2000 census At the
2000 census there were 16,317 people, 5,901 households, and 4,449 families in the CDP. The population density was . There were 6,580 housing units at an average density of . The
racial makup of the CDP was 93.84% White, 1.26% African American, 0.34% Native American, 0.70% Asian, 0.01% Pacific Islander, 2.31% from other races, and 1.54% from two or more races. Hispanic or Latino of any race were 8.14%. Of the 5,901 households 42.5% had children under the age of 18 living with them, 58.2% were married couples living together, 11.3% had a female householder with no husband present, and 24.6% were non-families. 16.5% of households were one person and 4.4% were one person aged 65 or older. The average household size was 2.77 and the average family size was 3.09. The age distribution was 29.3% under the age of 18, 6.9% from 18 to 24, 36.7% from 25 to 44, 18.5% from 45 to 64, and 8.7% 65 or older. The median age was 34 years. For every 100 females, there were 102.3 males. For every 100 females age 18 and over, there were 98.6 males. The median household income was $45,870 and the median family income was $48,740. Males had a median income of $31,768 versus $25,541 for females. The per capita income for the CDP was $19,022. About 6.1% of families and 8.0% of the population were below the
poverty line, including 8.8% of those under age 18 and 7.2% of those age 65 or over. ==History==