South Berwick
Incorporated 1814Set off from Berwick in 1814, whose name comes from Berwick-upon-Tweed, England.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoSouth Berwick’s vote. Click a question for the statewide comparison.How South Berwick Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently South Berwick 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 2020–2024South Berwick at a Glance
South Berwick is a town in York County, Maine, incorporated in 1814. It has an estimated 7,941 residents (2025), compared with 7,467 in the 2020 Census.
It is part of Congressional District 1, State Senate District 35, State House District 149 (80% of residents), State House District 150 (20% of residents), and County Commissioner District 1, in the Southern Coast region.
In the 2024 presidential race, Kamala Harris carried South Berwick with 58.8% to 39.1% for Donald Trump. That was a Democratic margin of 19.7 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried South Berwick with 62.4% to 35.4% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried South Berwick with 47.7% to 32.1% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 66th most Democratic of 504 towns.
As of March 7, 2026, South Berwick had 5,179 active registered voters: 40.2% Democrats, 23.8% Republicans, 33% unenrolled, and 2.7% Green Independents. The median household income is $99,572 and the median home value $428,300, 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.