Racial and ethnic composition 2020 census As of the
2020 census, La Grange Park had a population of 13,475. The median age was 42.1 years. 24.4% of residents were under the age of 18 and 19.1% were 65 years of age or older. For every 100 females, there were 89.4 males, and for every 100 females age 18 and over, there were 87.0 males age 18 and over. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. There were 5,022 households in La Grange Park, of which 35.1% had children under the age of 18 living in them. Of all households, 55.0% were married-couple households, 14.5% were households with a male householder and no spouse or partner present, and 26.1% were households with a female householder and no spouse or partner present. About 26.8% of all households were made up of individuals and 12.6% had someone living alone who was 65 years of age or older.
Income and poverty The median income for a household in the village was $107,945, and the median income for a family was $136,211. Males had a median income of $76,622 versus $55,700 for females. The
per capita income for the village was $49,794. About 3.6% of families and 5.1% of the population were below the
poverty line, including 4.8% of those under age 18 and 8.0% of those age 65 or over. ==Government==