Matinicus Isle Plantation
Organized 1840Named for Matinicus Island. The name is thought to be Abenaki, but its meaning is uncertain; suggestions include 'far-off island' and 'grassy islands.'
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoMatinicus Isle Plantation’s vote. Click a question for the statewide comparison.How Matinicus Isle Plantation Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Matinicus Isle Plantation 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 2020–2024Matinicus Isle Plantation at a Glance
Matinicus Isle Plantation is a plantation in Knox County, Maine, organized in 1840. It has an estimated 50 residents (2025), compared with 53 in the 2020 Census.
It is part of Congressional District 1, State Senate District 12, State House District 42, and County Commissioner District 3, in the Midcoast region.
In the 2024 presidential race, Kamala Harris carried Matinicus Isle Plantation with 70.2% to 27.7% for Donald Trump. That was a Democratic margin of 42.5 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Matinicus Isle Plantation with 66.7% to 31.2% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Matinicus Isle Plantation with 66% to 14.9% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 26th most Democratic of 504 towns.
As of March 7, 2026, Matinicus Isle Plantation had 54 active registered voters: 38.9% Democrats, 13% Republicans, 46.3% unenrolled, and 1.9% Green Independents. The median household income is $65,417 and the median home value $350,000, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1869 (with county figures from 1860), 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.