Grand Isle is located in Maine. Grand Isle, Maine has a population of 425. Grand Isle is less family-centric than the surrounding county with 19% households with children. The county percentage for households with children is 22%.
The median household income in Grand Isle, Maine is $29,444. The median household income for the surrounding county is $43,552 compared to the national median of $66,222. The median age of people living in Grand Isle is 54.6 years.
The average high temperature in July is 76.1 degrees, with an average low temperature in January of -7 degrees. The annual precipitation is 37.55.