Long Island
Incorporated 1993Named for the island in Casco Bay that it covers. The island seceded from the City of Portland in 1993.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoLong Island’s vote. Click a question for the statewide comparison.How Long Island Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Long Island 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 2020–2024Long Island at a Glance
Long Island is a town in Cumberland County, Maine, incorporated in 1993. It has an estimated 235 residents (2025), compared with 234 in the 2020 Census.
It is part of Congressional District 1, State Senate District 25, State House District 110, and County Commissioner District 3, in the Greater Portland region.
In the 2024 presidential race, Kamala Harris carried Long Island with 69% to 29% for Donald Trump. That was a Democratic margin of 40 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Long Island with 72.5% to 25.8% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Long Island with 64.5% to 24.5% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 25th most Democratic of 504 towns.
As of March 7, 2026, Long Island had 204 active registered voters: 44.1% Democrats, 18.1% Republicans, 33.8% unenrolled, and 3.9% Green Independents. The median household income is $91,250 and the median home value $551,100, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1994 (with county figures from 1821), voter registration since 1994, 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.