Racial and ethnic composition 2020 census As of the
2020 census, Green Oaks had a population of 4,128. The median age was 46.2 years. 24.9% of residents were under the age of 18 and 20.6% were 65 years of age or older. For every 100 females there were 93.7 males, and for every 100 females age 18 and over there were 90.5 males. There were 1,295 households and 996 families in Green Oaks, of which 40.5% had children under the age of 18 living in them. Of all households, 72.8% were married-couple households, 8.2% were households with a male householder and no spouse or partner present, and 17.1% were households with a female householder and no spouse or partner present. About 17.2% of all households were made up of individuals and 13.0% had someone living alone who was 65 years of age or older. There were 1,371 housing units, of which 5.5% were vacant. The homeowner vacancy rate was 1.7% and the rental vacancy rate was 6.9%. The population density was , and there were 1,371 housing units at an average density of .
Income and poverty The median income for a household in the village was $119,625, and the median income for a family was $211,250. Males had a median income of $106,719 versus $53,398 for females. The
per capita income for the village was $71,496. About 4.0% of families and 6.3% of the population were below the
poverty line, including 0.6% of those under age 18 and 8.6% of those age 65 or over. ==References==