Jefferson
Incorporated 1807Formed from Ballstown Plantation, named for settler John Ball. It was incorporated during Thomas Jefferson's presidency.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoJefferson’s vote. Click a question for the statewide comparison.How Jefferson Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Jefferson 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 2020–2024Jefferson at a Glance
Jefferson is a town in Lincoln County, Maine, incorporated in 1807. It has an estimated 2,728 residents (2025), compared with 2,551 in the 2020 Census.
It is part of Congressional District 1, State Senate District 13, State House District 47, and County Commissioner District 3, in the Central Maine region.
In the 2024 presidential race, Donald Trump carried Jefferson with 55.1% to 42.6% for Kamala Harris. That was a Republican margin of 12.5 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Paul LePage carried Jefferson with 53.7% to 44.1% for Janet Mills. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Jefferson with 46.9% to 43.4% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 248th most Republican of 504 towns.
As of March 7, 2026, Jefferson had 1,921 active registered voters: 26.1% Democrats, 37.6% Republicans, 32% unenrolled, and 3.7% Green Independents. The median household income is $85,078 and the median home value $311,600, 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.