Caribou
Incorporated 1859 as Lyndon · city since 1967Named for Caribou Stream, which flows through the village. The town was incorporated as Lyndon; the name Caribou was adopted briefly in 1869 and permanently in 1877.
Voter Registration
Active voters, Secretary of State file of March 7, 2026Current enrollment
Registration history
Recent General Election Results
Referendums
YesNoCaribou’s vote. Click a question for the statewide comparison.How Caribou Compares
Presidential margin vs. Maine
Democratic minus Republican share of the candidate vote. The gap between the lines shows how differently Caribou 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 2020–2024Caribou at a Glance
Caribou is a city in Aroostook County, Maine, incorporated in 1859 as Lyndon, a city since 1967. It has an estimated 7,321 residents (2025), compared with 7,396 in the 2020 Census.
It is part of Congressional District 2, State Senate District 1, State House District 4, and County Commissioner District 2, in The County region.
In the 2024 presidential race, Donald Trump carried Caribou with 59.3% to 39.4% for Kamala Harris. That was a Republican margin of 19.9 points, against a Democratic margin of 6.9 points statewide. In the 2022 governor’s race, Paul LePage carried Caribou with 54.1% to 44.2% for Janet Mills. In the 2024 U.S. Senate race, Angus King (Unenrolled) carried Caribou with 51.3% to 40% for Demi Kouzounas. On the Partisan Electoral Alignment Index (Partisan EAI), it ranks as the 230th most Republican of 504 towns.
As of March 7, 2026, Caribou had 4,057 active registered voters: 25.4% Democrats, 40.4% Republicans, 30.3% unenrolled, and 3.5% Green Independents. The median household income is $53,709 and the median home value $134,100, against $74,733 and $296,600 statewide.
Below the summary figures, this page has election results back to 1868 (with county figures from 1839), 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.