2020 census As of the
2020 census, Richville had a population of 3,209. The median age was 45.1 years. 19.0% of residents were under the age of 18 and 22.7% of residents were 65 years of age or older. For every 100 females there were 102.8 males, and for every 100 females age 18 and over there were 102.7 males age 18 and over. 95.5% of residents lived in urban areas, while 4.5% lived in rural areas. There were 1,361 households in Richville, of which 25.9% had children under the age of 18 living in them. Of all households, 52.3% were married-couple households, 16.5% were households with a male householder and no spouse or partner present, and 22.9% were households with a female householder and no spouse or partner present. About 24.7% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older. There were 1,405 housing units, of which 3.1% were vacant. The homeowner vacancy rate was 0.6% and the rental vacancy rate was 1.0%. ==References==