
Grand Isle
- County:
- Aroostook County
- County Seat:
- No
- Area (mi²):
- 0.619
- State:
- Maine
Grand Isle is a CDP located in Aroostook County, Maine. Grand Isle has a 2025 population of 278. Grand Isle is currently growing at a rate of 7.34% annually and its population has increased by 47.09% since the most recent census, which recorded a population of 189 in 2020.
The average household income in Grand Isle is $58,514 with a poverty rate of 15.16%. The median age in Grand Isle is 61 years: 60 years for males, and 61.5 years for females.