Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Latah County, Idaho has 23,432 active registered voters — 49.3% Republican, 18.9% Democratic, and 30.4% with no party affiliation, as of July 2026.
Party registration
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 04MOS | 931 | 609 | 65.41% |
| 2 | 30VIO | 476 | 299 | 62.82% |
| 3 | 13MOS | 651 | 407 | 62.52% |
| 4 | 17MOS | 980 | 610 | 62.24% |
| 5 | 11MOS | 905 | 558 | 61.66% |
| 6 | 39TRO | 542 | 330 | 60.89% |
| 7 | 09MOS | 1,084 | 658 | 60.7% |
| 8 | 15MOS | 868 | 526 | 60.6% |
| 9 | 29TRO | 947 | 555 | 58.61% |
| 10 | 21GEN | 983 | 571 | 58.09% |
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 Latah County voted for president
Election results are public records.
Latah County at a glance.
Latah County had an estimated 42,180 residents in July 2024, the 11th most populous of Idaho's 44 counties, up 6.7% since the 2020 census. Of those, 34,091 are 18 or older, the voting-age population, and 15.2% are 65 or older. Its 23,432 active registered voters equal about 68.7% of that voting-age population.
It covers 1,076 square miles of land (39 people per square mile), and 24.9% of residents live outside any incorporated city or town. The largest cities and towns are Moscow (26,894), Genesee (1,103), Troy (942), Potlatch (810) and Juliaetta (650). The American Community Survey (2020-2024) puts it at a median age of 30.6, a median household income of $65,424, 43.0% of adults 25 and older holding a bachelor's degree or higher and 58.7% of occupied homes owned by the people living in them.
In 2024, 20,440 votes were cast for president, about 60.0% of the voting-age population; the Democratic ticket took 44.2% and the Republican ticket 52.2%. The two-party margin moved from D+6.8 in 2008 to R+8.0 in 2024.
- Population (2024 estimate)
- 42,180
- Population (2020 census base)
- 39,521
- Voting-age population (18+)
- 34,091
- Active voters per 100 adults
- 68.7
- Residents 65 and older
- 15.2%
- People per square mile
- 39
- Living outside incorporated places
- 24.9%
- Land area
- 1,076 sq mi
- Median age
- 30.6
- Median household income
- $65,424
- Adults 25+ with a bachelor's degree
- 43.0%
- Owner-occupied homes
- 58.7%
Largest cities and towns
- Moscow 26,894
- Genesee 1,103
- Troy 942
- Potlatch 810
- Juliaetta 650
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 44.2% | 52.2% | R+8.0 | 20,440 |
| 2020 | 49.8% | 46.0% | D+3.8 | 20,570 |
| 2016 | 44.6% | 40.0% | D+4.6 | 18,146 |
| 2012 | 49.6% | 45.3% | D+4.3 | 16,759 |
| 2008 | 51.9% | 45.1% | D+6.8 | 17,714 |
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.
Running in Latah County?
The voter file is loaded. Create your campaign and start canvassing in minutes.
Start free in Latah CountyAlso see: Motion51 in Idaho · How to run for office in Latah County · Pricing