Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Kootenai County, Idaho has 111,328 active registered voters — 68.6% Republican, 8.8% Democratic, and 21.0% with no party affiliation, as of July 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 410 | 1,452 | 614 | 42.29% |
| 2 | 320 | 1,642 | 669 | 40.74% |
| 3 | 420 | 1,319 | 518 | 39.27% |
| 4 | 314 | 1,836 | 712 | 38.78% |
| 5 | 419 | 1,423 | 546 | 38.37% |
| 6 | 205 | 1,562 | 597 | 38.22% |
| 7 | 321 | 1,559 | 591 | 37.91% |
| 8 | 406 | 1,346 | 507 | 37.67% |
| 9 | 318 | 1,369 | 497 | 36.3% |
| 10 | 409 | 1,393 | 489 | 35.1% |
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 Kootenai County voted for president
Election results are public records.
Kootenai County at a glance.
Kootenai County had an estimated 188,323 residents in July 2024, the third most populous of Idaho's 44 counties, up 9.9% since the 2020 census. Of those, 147,040 are 18 or older, the voting-age population, and 20.8% are 65 or older. Its 111,328 active registered voters equal about 75.7% of that voting-age population.
It covers 1,238 square miles of land (152 people per square mile), and 25.3% of residents live outside any incorporated city or town. The largest cities and towns are Coeur d'Alene (57,355), Post Falls (45,800), Hayden (16,924), Rathdrum (12,626) and Dalton Gardens (2,498). The American Community Survey (2020-2024) puts it at a median age of 40.9, a median household income of $81,861, 30.0% of adults 25 and older holding a bachelor's degree or higher and 71.3% of occupied homes owned by the people living in them.
In 2024, 96,340 votes were cast for president, about 65.5% of the voting-age population; the Democratic ticket took 23.0% and the Republican ticket 74.8%. The two-party margin moved from R+26.3 in 2008 to R+51.8 in 2024.
- Population (2024 estimate)
- 188,323
- Population (2020 census base)
- 171,362
- Voting-age population (18+)
- 147,040
- Active voters per 100 adults
- 75.7
- Residents 65 and older
- 20.8%
- People per square mile
- 152
- Living outside incorporated places
- 25.3%
- Land area
- 1,238 sq mi
- Median age
- 40.9
- Median household income
- $81,861
- Adults 25+ with a bachelor's degree
- 30.0%
- Owner-occupied homes
- 71.3%
Largest cities and towns
- Coeur d'Alene 57,355
- Post Falls 45,800
- Hayden 16,924
- Rathdrum 12,626
- Dalton Gardens 2,498
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 23.0% | 74.8% | R+51.8 | 96,340 |
| 2020 | 27.1% | 69.9% | R+42.8 | 89,878 |
| 2016 | 24.5% | 67.1% | R+42.6 | 66,286 |
| 2012 | 31.5% | 65.8% | R+34.3 | 59,764 |
| 2008 | 35.7% | 62.0% | R+26.3 | 61,932 |
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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