2020 census As of the
2020 United States census, there were 15,899 people, 5,323 households, and 4,423 families residing in the city. The median age was 44.5 years, 24.3% of residents were under the age of 18, and 15.9% of residents were 65 years of age or older; for every 100 females there were 97.9 males, and for every 100 females age 18 and over there were 95.1 males age 18 and over. There were 5,323 households in Highland Village, of which 39.6% had children under the age of 18 living in them. Of all households, 77.1% were married-couple households, 7.3% were households with a male householder and no spouse or partner present, and 13.0% were households with a female householder and no spouse or partner present. About 10.9% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older. There were 5,480 housing units, of which 2.9% were vacant. The homeowner vacancy rate was 1.0% and the rental vacancy rate was 11.7%. ==Education==