Gramercy is a town in St. James Parish, Louisiana, United States. The population was 3,613 at the 2010 census.
Gramercy is located at 30°3′14″N 90°41′21″W / 30.05389°N 90.68917°W / 30.05389; -90.68917 (30.053907, -90.689154). Gramercy is bordered on the west by the town of Lutcher and on the south by the Mississippi River.
According to the United States Census Bureau, the town has a total area of 2.1 square miles (5.4 km), of which 2.1 square miles (5.4 km) is land and 0.04 square miles (0.10 km) (1.42%) is water.
As of the census of 2000, there were 3,066 people, 1,090 households, and 833 families residing in the town. The population density was 1,477.6 people per square mile (571.9/km²). There were 1,163 housing units at an average density of 560.5 per square mile (216.9/km²). The racial makeup of the town was 63.60% White, 34.83% African American, 0.46% Native American, 0.10% Asian, and 1.01% from two or more races. Hispanic or Latino of any race were 0.72% of the population.
There were 1,090 households out of which 35.0% had children under the age of 18 living with them, 53.4% were married couples living together, 18.1% had a female householder with no husband present, and 23.5% were non-families. 20.8% of all households were made up of individuals and 7.9% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.27.
In the town, the population was spread out with 28.6% under the age of 18, 7.5% from 18 to 24, 30.0% from 25 to 44, 21.1% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 95.3 males. For every 100 females age 18 and over, there were 89.4 males.
The median income for a household in the town was $33,824, and the median income for a family was $39,350. Males had a median income of $39,013 versus $22,750 for females. The per capita income for the town was $14,040. About 17.4% of families and 21.3% of the population were below the poverty line, including 29.2% of those under age 18 and 10.0% of those age 65 or over.