Sagadahoc County
Established 1854From an Abenaki word meaning 'mouth of the big river,' an early name for the lower Kennebec. Formed from part of Lincoln County.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoSagadahoc County’s vote. Click a question for the statewide comparison.How Sagadahoc County Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Sagadahoc County 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 2020–2024Sagadahoc County at a Glance
Sagadahoc County is one of Maine’s sixteen counties, established in 1854. It has an estimated 37,979 residents (2025), compared with 36,699 in the 2020 Census.
In the 2024 presidential race, Kamala Harris carried Sagadahoc County with 57.2% to 40.6% for Donald Trump. That was a Democratic margin of 16.6 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Janet Mills carried Sagadahoc County with 59.6% to 38.6% for Paul LePage. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Sagadahoc County with 58.9% to 30.3% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 3rd most Democratic of 16 counties.
As of March 7, 2026, Sagadahoc County had 26,456 active registered voters: 37% Democrats, 27.1% Republicans, 31.9% unenrolled, and 3.5% Green Independents. The median household income is $87,806 and the median home value $333,300, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1854, 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.