Grand Isle is a town located in Jefferson Parish, Louisiana. Grand Isle has a 2025 population of 987. Grand Isle is currently declining at a rate of -0.4% annually and its population has decreased by -1.79% since the most recent census, which recorded a population of 1,005 in 2020.
The average household income in Grand Isle is $66,097 with a poverty rate of 31.32%. The median age in Grand Isle is 54 years: 53.2 years for males, and 55.5 years for females.
Data after 2023 is projected based on recent change
The racial composition of Grand Isle includes 93.01% White, and smaller percentages for Black or African American, other race and multiracial populations.
White (93.0%)
Two or more races (4.8%)
Black or African American (1.4%)
Other race (0.8%)
Race  | Population  | Percentage (of total)  | 
|---|---|---|
| White | 599 | 93.01% | 
| Two or more races | 31 | 4.81% | 
| Black or African American | 9 | 1.4% | 
| Other race | 5 | 0.78% | 
Married
Widowed
Divorced
Separated
Never Married
Grand Isle's average per capita income is $47,656. Household income levels show a median of $0. The poverty rate stands at 31.32%.
Name  | Median  | Mean  | 
|---|---|---|
| Families | $107,917 | $93,705 | 
| Married Families | $102,083 | - | 
| Non Families | $10,811 | $22,287 | 
| Households | - | $66,097 | 
Average Income
Median Household Income
Poverty Rate