Waterville
Incorporated 1802 · city since 1888Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoWaterville’s vote. Click a question for the statewide comparison.How Waterville Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Waterville 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 2020–2024Waterville at a Glance
Waterville is a city in Kennebec County, Maine, incorporated in 1802, a city since 1888. It has an estimated 17,579 residents (2025), compared with 15,828 in the 2020 Census.
It is part of Congressional District 1, State Senate District 16, State House District 65 (55% of residents), State House District 64 (45% of residents), and County Commissioner District 3, in the Central Maine region.
In the 2024 presidential race, Kamala Harris carried Waterville with 61.8% to 35.7% for Donald Trump. That was a Democratic margin of 26.1 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Waterville with 67.3% to 30.4% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Waterville with 51.3% to 25.9% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 40th most Democratic of 504 towns.
As of March 7, 2026, Waterville had 8,282 active registered voters: 42.8% Democrats, 22.4% Republicans, 31.3% unenrolled, and 2.7% Green Independents. The median household income is $53,580 and the median home value $184,600, 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.