2020 census As of the
2020 census, Crompond had a population of 2,330. The median age was 45.5 years. 22.8% of residents were under the age of 18 and 22.4% of residents were 65 years of age or older. For every 100 females there were 86.1 males, and for every 100 females age 18 and over there were 83.0 males age 18 and over. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. There were 745 households in Crompond, of which 37.4% had children under the age of 18 living in them. Of all households, 71.0% were married-couple households, 6.4% were households with a male householder and no spouse or partner present, and 19.2% were households with a female householder and no spouse or partner present. About 15.0% of all households were made up of individuals and 8.7% had someone living alone who was 65 years of age or older. Of the 609 households 46.6% had children under the age of 18 living with them, 76.4% were married couples living together, 6.2% had a female householder with no husband present, and 15.1% were non-families. 12.8% of households were one person and 4.8% were one person aged 65 or older. The average household size was 3.00 and the average family size was 3.30. The age distribution was 26.8% under the age of 18, 4.5% from 18 to 24, 25.9% from 25 to 44, 25.7% from 45 to 64, and 17.1% 65 or older. The median age was 41 years. For every 100 females, there were 89.5 males. For every 100 females age 18 and over, there were 82.9 males. The median household income was $88,408 and the median family income was $98,293. Males had a median income of $58,750 versus $41,842 for females. The per capita income for the CDP was $31,292. About 1.3% of families and 2.0% of the population were below the
poverty line, including 1.3% of those under age 18 and none of those age 65 or over. ==Education==