Isle au Haut
Incorporated 1874Samuel de Champlain named the island in 1604; the French name means 'high island.' The town was set off from Deer Isle in 1874.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoIsle au Haut’s vote. Click a question for the statewide comparison.How Isle au Haut Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Isle au Haut 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 2020–2024Isle au Haut at a Glance
Isle au Haut is a town in Knox County, Maine, incorporated in 1874. It has an estimated 84 residents (2025), compared with 92 in the 2020 Census.
It is part of Congressional District 1, State Senate District 7, State House District 15, and County Commissioner District 3, in the Midcoast region.
In the 2024 presidential race, Kamala Harris carried Isle au Haut with 70.3% to 26.6% for Donald Trump. That was a Democratic margin of 43.7 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Isle au Haut with 78.7% to 18% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Isle au Haut with 72.1% to 14.8% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 4th most Democratic of 504 towns.
As of March 7, 2026, Isle au Haut had 72 active registered voters: 65.3% Democrats, 5.6% Republicans, 26.4% unenrolled, 1.4% Green Independents, and 1.4% Libertarians. The median household income is $49,500 and the median home value $593,800, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1874 (with county figures from 1860), voter registration since 1956, 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.