8,331
Active registered voters
6
Precincts
3,908
Supervoters (46.91%)
5
Presidential cycles of results
Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Boundary County, Idaho has 8,331 active registered voters — 80.0% Republican, 4.5% Democratic, and 0.0% with no party affiliation, as of July 2026.
Party registration
Democratic 373 · Republican 6,663 · No Party Affiliation 0 · Other parties 1,295
Source: Motion51 voter database — official Idaho voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 005 | 1,472 | 710 | 48.23% |
| 2 | 004 | 2,140 | 1,007 | 47.06% |
| 3 | 001 | 1,149 | 537 | 46.74% |
| 4 | 002 | 899 | 418 | 46.5% |
| 5 | 007 | 1,088 | 505 | 46.42% |
| 6 | 006 | 1,583 | 731 | 46.18% |
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.
Source: Motion51 voter database — official Idaho voter file
How Boundary County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 7,110
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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