Grand Isle
Incorporated 1869Named for a large, fertile island in the St. John River near the town center. The name was changed to Grand Isle in 1872.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoGrand Isle’s vote. Click a question for the statewide comparison.How Grand Isle Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Grand Isle votes from the state.
Turnout in general elections
Ballots cast divided by active registered voters on election day. List maintenance shrinks the denominator in some years (for example 2022), which pushes the rate up.
Who Lives Here
American Community Survey 2020–2024Grand Isle at a Glance
Grand Isle is a town in Aroostook County, Maine, incorporated in 1869. It has an estimated 356 residents (2025), compared with 366 in the 2020 Census.
It is part of Congressional District 2, State Senate District 1, State House District 2, and County Commissioner District 3, in The County region.
In the 2024 presidential race, Donald Trump carried Grand Isle with 58.8% to 39.9% for Kamala Harris. That was a Republican margin of 18.9 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Paul LePage carried Grand Isle with 51.6% to 48.4% for Janet Mills. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Grand Isle with 49.8% to 40.3% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 142nd most Democratic of 504 towns.
As of March 7, 2026, Grand Isle had 268 active registered voters: 41.4% Democrats, 20.9% Republicans, 30.6% unenrolled, and 6.7% Green Independents. The median household income is $35,417 and the median home value $85,000, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1869 (with county figures from 1839), voter registration since 1954, referendum votes, turnout, and Census and American Community Survey figures. Sources are listed at the foot of the page and on the Data Sources page.