2020 census As of the
2020 census, Horsham had a population of 15,193. The median age was 40.1 years. 20.9% of residents were under the age of 18 and 15.7% of residents were 65 years of age or older. For every 100 females there were 93.1 males, and for every 100 females age 18 and over there were 90.7 males age 18 and over. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. There were 6,010 households in Horsham, of which 29.6% had children under the age of 18 living in them. Of all households, 49.2% were married-couple households, 16.8% were households with a male householder and no spouse or partner present, and 26.6% were households with a female householder and no spouse or partner present. About 27.6% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older.
Income and poverty The median income for a household in the CDP was $85,767, and the median income for a family was $68,619. The
per capita income for the CDP was $41,747. About 39.8% of the population were below the
poverty line. ==Education==