Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Adams County, Idaho has 3,078 active registered voters — 74.9% Republican, 6.9% Democratic, and 17.1% with no party affiliation, as of July 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 003 | 789 | 449 | 56.91% |
| 2 | 002 | 801 | 453 | 56.55% |
| 3 | 005 | 1,176 | 592 | 50.34% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
How Adams County voted for president
Election results are public records.
Adams County at a glance.
Adams County had an estimated 4,998 residents in July 2024, the 38th most populous of Idaho's 44 counties, up 14.1% since the 2020 census. Of those, 4,191 are 18 or older, the voting-age population, and 31.5% are 65 or older. Its 3,078 active registered voters equal about 73.4% of that voting-age population.
It covers 1,363 square miles of land (3.7 people per square mile), and 67.3% of residents live outside any incorporated city or town. The largest cities and towns are Council (975) and New Meadows (659). The American Community Survey (2020-2024) puts it at a median age of 53.9, a median household income of $61,808, 21.6% of adults 25 and older holding a bachelor's degree or higher and 84.7% of occupied homes owned by the people living in them.
In 2024, 2,679 votes were cast for president, about 63.9% of the voting-age population; the Democratic ticket took 21.5% and the Republican ticket 76.0%. The two-party margin moved from R+34.0 in 2008 to R+54.5 in 2024.
- Population (2024 estimate)
- 4,998
- Population (2020 census base)
- 4,379
- Voting-age population (18+)
- 4,191
- Active voters per 100 adults
- 73.4
- Residents 65 and older
- 31.5%
- People per square mile
- 3.7
- Living outside incorporated places
- 67.3%
- Land area
- 1,363 sq mi
- Median age
- 53.9
- Median household income
- $61,808
- Adults 25+ with a bachelor's degree
- 21.6%
- Owner-occupied homes
- 84.7%
Largest cities and towns
- Council 975
- New Meadows 659
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 21.5% | 76.0% | R+54.5 | 2,679 |
| 2020 | 22.9% | 75.1% | R+52.2 | 2,586 |
| 2016 | 19.0% | 71.3% | R+52.3 | 2,183 |
| 2012 | 28.0% | 68.6% | R+40.6 | 2,060 |
| 2008 | 31.4% | 65.4% | R+34.0 | 2,320 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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