Ossun was first listed as a
census designated place in the
2010 U.S. census.
2020 census As of the
2020 census, Ossun had a population of 2,145. The median age was 36.3 years. 28.7% of residents were under the age of 18 and 11.7% of residents were 65 years of age or older. For every 100 females there were 97.5 males, and for every 100 females age 18 and over there were 89.2 males age 18 and over. 78.9% of residents lived in urban areas, while 21.1% lived in rural areas. There were 786 households in Ossun, of which 36.0% had children under the age of 18 living in them. Of all households, 45.4% were married-couple households, 13.9% were households with a male householder and no spouse or partner present, and 34.2% were households with a female householder and no spouse or partner present. About 22.0% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. There were 852 housing units, of which 7.7% were vacant. The homeowner vacancy rate was 0.0% and the rental vacancy rate was 12.9%. ==References==