Chelsea
Incorporated 1851Named for Chelsea, Massachusetts (itself named for a district of London). It was set off from Hallowell in 1851.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoChelsea’s vote. Click a question for the statewide comparison.How Chelsea Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Chelsea 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 2020–2024Chelsea at a Glance
Chelsea is a town in Kennebec County, Maine, incorporated in 1851. It has an estimated 2,848 residents (2025), compared with 2,778 in the 2020 Census.
It is part of Congressional District 2, State Senate District 14, State House District 53, and County Commissioner District 1, in the Central Maine region.
In the 2024 presidential race, Donald Trump carried Chelsea with 62.2% to 36.4% for Kamala Harris. That was a Republican margin of 25.8 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Paul LePage carried Chelsea with 55.5% to 42.1% for Janet Mills. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Chelsea with 47.9% to 42.6% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 224th most Republican of 504 towns.
As of March 7, 2026, Chelsea had 1,717 active registered voters: 24.6% Democrats, 38.3% Republicans, 32.5% unenrolled, and 4.2% Green Independents. The median household income is $85,471 and the median home value $182,300, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1868 (with county figures from 1821), 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.