Oxon Hill includes many garden apartment communities along with single-family detached homes dating mostly from the 1940s through the 1980s, including the incorporated town Forest Heights. In earlier decades, many residents were scientists from the adjacent U.S. Naval Research Laboratory, but very few are now. Oxon Hill's two principal shopping centers ("Rivertowne" and the much older "Eastover") attract neighborhood customers as well as shoppers from nearby Southeast Washington. Eastover, located at the D.C. state line, is a hub of many bus routes, some of them operating 24 hours a day, and has a Prince George's County Police station.
There were 13,700 households out of which 35.1% had children under the age of 18 living with them, 33.2% were married couples living together, 27.1% had a female householder with no husband present, and 33.8% were non-families. 28.0% of all households were made up of individuals and 4.1% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.14.
In the area the population was spread out with 28.5% under the age of 18, 9.3% from 18 to 24, 32.8% from 25 to 44, 22.8% from 45 to 64, and 6.5% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 84.3 males. For every 100 females age 18 and over, there were 76.9 males.
The median income for a household in the area was $46,483, and the median income for a family was $52,227. Males had a median income of $35,338 versus $34,646 for females. The per capita income for the area was $21,511. About 6.7% of families and 8.8% of the population were below the poverty line, including 12.3% of those under age 18 and 8.2% of those age 65 or over.