A subdistrict of the Gentilly District Area, its boundaries as defined by the City Planning Commission are: Filmore Avenue to the north, People's Avenue to the east, Gentilly Boulevard (US 90) to the south and Elysian Fields Avenue to the west.

Gentilly Terrace may be further divided into Gentilly Terrace & Gardens, Edgewood Park and Fairmont Park, all three of which possess organized, distinct, and active neighborhood associations.

[2] According to the United States Census Bureau, the district has a total area of 1.21 square miles (3.1 km2).

[3] As of the census of 2000, there were 10,542 people, 4,258 households, and 2,783 families residing in the neighborhood.

As of the census of 2010, there were 8,210 people, 3,351 households, and 2,158 families residing in the neighborhood.