Gresham Park is an unincorporated community and census-designated place (CDP) in DeKalb County, Georgia, United States. The population was 7,700 at the 2020 census.

Gresham Park is located at 33°42′12″N 84°18′52″W / 33.70333°N 84.31444°W / 33.70333; -84.31444 (33.703357, -84.314366). It is bordered by, on the:

According to the United States Census Bureau, the CDP has a total area of 2.8 square miles (7.3 km²), all land.

Gresham Park was first listed as a census designated place in the 1980 U.S. census.

As of the 2020 census, Gresham Park had a population of 7,700. The median age was 37.0 years. 17.3% of residents were under the age of 18 and 16.3% of residents were 65 years of age or older. For every 100 females there were 90.9 males, and for every 100 females age 18 and over there were 88.5 males age 18 and over.

100.0% of residents lived in urban areas, while 0.0% lived in rural areas.

There were 3,247 households in Gresham Park, of which 24.5% had children under the age of 18 living in them. Of all households, 26.3% were married-couple households, 23.6% were households with a male householder and no spouse or partner present, and 40.5% were households with a female householder and no spouse or partner present. About 30.2% of all households were made up of individuals and 8.5% had someone living alone who was 65 years of age or older. There were 1,667 families residing in the CDP.

There were 3,497 housing units, of which 7.1% were vacant. The homeowner vacancy rate was 2.8% and the rental vacancy rate was 6.9%.