Winthrop
Incorporated 1771Named for John Winthrop, first governor of the Massachusetts Bay Colony. It was earlier called Pondtown for its many lakes.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoWinthrop’s vote. Click a question for the statewide comparison.How Winthrop Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Winthrop 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 2020–2024Winthrop at a Glance
Winthrop is a town in Kennebec County, Maine, incorporated in 1771. It has an estimated 6,158 residents (2025), compared with 6,121 in the 2020 Census.
It is part of Congressional District 2, State Senate District 14, State House District 57, and County Commissioner District 2, in the Central Maine region.
In the 2024 presidential race, Kamala Harris carried Winthrop with 51.2% to 46.4% for Donald Trump. That was a Democratic margin of 4.8 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Winthrop with 54.7% to 43.4% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Winthrop with 56.3% to 34.2% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 107th most Democratic of 504 towns.
As of March 7, 2026, Winthrop had 4,196 active registered voters: 31% Democrats, 32.9% Republicans, 31.2% unenrolled, and 4.5% Green Independents. The median household income is $86,470 and the median home value $294,800, 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.