HarrisDemocratic25.4%25,669TrumpRepublican72.0%72,755KennedyIndependent1.3%1,315
R+46.6- Lead
- 47,086
- Total
- 101,030
- vs nation
- R+45.1
- Turnout
- 59.4%
Akashiccounty
Canyon County, ID
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
2024 turnout 59.4% of 172,388 citizens 18+
BidenDemocratic28.6%25,881TrumpRepublican68.3%61,759JorgensenLibertarian1.9%1,696
R+39.7- Lead
- 35,878
- Total
- 90,410
- vs nation
- R+44.1
- Turnout
- 60.6%
ClintonDemocratic23.2%16,883TrumpRepublican64.9%47,222McMullinBetter For America5.8%4,216
R+41.7- Lead
- 30,339
- Total
- 72,765
- vs nation
- R+43.8
- Turnout
- 56.5%
ObamaDemocratic30.1%19,866RomneyRepublican67.1%44,369JohnsonLibertarian1.4%945
R+37.1- Lead
- 24,503
- Total
- 66,090
- vs nation
- R+40.9
- Turnout
- —
ObamaDemocratic31.4%20,147McCainRepublican66.5%42,752OtherAll other candidates2.1%1,347
R+35.2- Lead
- 22,605
- Total
- 64,246
- vs nation
- R+42.5
- Turnout
- —
KerryDemocratic24.1%13,415BushRepublican74.7%41,599OtherAll other candidates1.2%684
R+50.6- Lead
- 28,184
- Total
- 55,698
- vs nation
- R+48.1
- Turnout
- —
GoreDemocratic24.6%10,588BushRepublican71.1%30,560NaderGreen1.4%588
R+46.4- Lead
- 19,972
- Total
- 43,000
- vs nation
- R+47.0
- Turnout
- —
ClintonDemocratic29.3%11,800DoleRepublican59.5%23,988PerotReform9.8%3,956
R+30.2- Lead
- 12,188
- Total
- 40,328
- vs nation
- R+38.7
- Turnout
- —
Key facts
- 2024 presidential margin
- R+46.6MIT Election Lab
- Population
- 250,7902024 5-year
- Median household income
- $76,4882024 5-year
- White (non-Hispanic)
- 67.1%2024 5-year
- Black
- 0.7%2024 5-year
- Hispanic / Latino
- 26.0%2024 5-year
- Peak Democratic margin
- D+58.2 in 1896MIT Election Lab
- Peak Republican margin
- R+53.1 in 1928MIT Election Lab
- Most similar
- Twin Falls County, ID · twin score 90.1
Midterm durability
Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.
- 2024 total turnout
- 59.4%102,432 participants ÷ 172,388 CVAP
- 2020→2022 drop-off
- +18.8 ptsVolatile
- Drop-off versus state
- -6.9 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 40.6%–44.8%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 74,648 | 132,144 | 56.5% | A/A |
| 2018 · Midterm | 64,247 | 139,467 | 46.1% | A/A |
| 2020 · Presidential | 91,407 | 150,904 | 60.6% | A/A |
| 2022 · Midterm | 66,939 | 160,230 | 41.8% | C/A |
| 2024 · Presidential | 102,432 | 172,388 | 59.4% | A/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2022: numerator source 159, denominator source 157; top ticket votes; canonical-complete-contest-floor-v1; allocation share 0.0%; series 154/183.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
Precinct data
Results by precinct
51 precincts · 101,030 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -12101210 | 800 | 2,909 | 70 | 3,779 | 21.2% | 77.0% | R+55.8 |
|---|---|---|---|---|---|---|---|
| Precinct -33123312 | 927 | 2,710 | 92 | 3,729 | 24.9% | 72.7% | R+47.8 |
| Precinct -09100910 | 620 | 2,985 | 85 | 3,690 | 16.8% | 80.9% | R+64.1 |
| Precinct -10101010 | 514 | 2,966 | 81 | 3,561 | 14.4% | 83.3% | R+68.9 |
| Precinct -38133813 | 782 | 2,601 | 74 | 3,457 | 22.6% | 75.2% | R+52.6 |
| Precinct -23112311 | 1,015 | 2,082 | 112 | 3,209 | 31.6% | 64.9% | R+33.3 |
| Precinct -32123212 | 959 | 2,147 | 93 | 3,199 | 30.0% | 67.1% | R+37.1 |
| Precinct -17101710 | 913 | 2,165 | 97 | 3,175 | 28.8% | 68.2% | R+39.4 |
| Precinct -35123512 | 881 | 2,221 | 67 | 3,169 | 27.8% | 70.1% | R+42.3 |
| Precinct -44134413 | 741 | 2,333 | 74 | 3,148 | 23.5% | 74.1% | R+50.6 |
| Precinct -08100810 | 430 | 2,552 | 63 | 3,045 | 14.1% | 83.8% | R+69.7 |
| Precinct -19111911 | 735 | 2,092 | 74 | 2,901 | 25.3% | 72.1% | R+46.8 |
| Precinct -15101510 | 691 | 2,031 | 66 | 2,788 | 24.8% | 72.8% | R+48.1 |
| Precinct -29122912 | 777 | 1,916 | 53 | 2,746 | 28.3% | 69.8% | R+41.5 |
| Precinct -27122712 | 642 | 1,734 | 58 | 2,434 | 26.4% | 71.2% | R+44.9 |
| Precinct -50235023 | 420 | 1,855 | 48 | 2,323 | 18.1% | 79.9% | R+61.8 |
| Precinct -01090109 | 354 | 1,924 | 40 | 2,318 | 15.3% | 83.0% | R+67.7 |
| Precinct -46134613 | 624 | 1,594 | 56 | 2,274 | 27.4% | 70.1% | R+42.7 |
| Precinct -25112511 | 711 | 1,458 | 61 | 2,230 | 31.9% | 65.4% | R+33.5 |
| Precinct -31123112 | 799 | 1,302 | 63 | 2,164 | 36.9% | 60.2% | R+23.2 |
| Precinct -04090409 | 423 | 1,639 | 57 | 2,119 | 20.0% | 77.3% | R+57.4 |
| Precinct -39133913 | 566 | 1,480 | 71 | 2,117 | 26.7% | 69.9% | R+43.2 |
| Precinct -43134313 | 800 | 1,209 | 80 | 2,089 | 38.3% | 57.9% | R+19.6 |
| Precinct -48234823 | 416 | 1,601 | 43 | 2,060 | 20.2% | 77.7% | R+57.5 |
| Precinct -18111811 | 613 | 1,354 | 55 | 2,022 | 30.3% | 67.0% | R+36.6 |
| Precinct -28122812 | 653 | 1,205 | 47 | 1,905 | 34.3% | 63.3% | R+29.0 |
| Precinct -34123412 | 579 | 1,259 | 61 | 1,899 | 30.5% | 66.3% | R+35.8 |
| Precinct -22112211 | 666 | 1,164 | 52 | 1,882 | 35.4% | 61.8% | R+26.5 |
| Precinct -45134513 | 552 | 1,211 | 61 | 1,824 | 30.3% | 66.4% | R+36.1 |
| Precinct -07100710 | 257 | 1,395 | 37 | 1,689 | 15.2% | 82.6% | R+67.4 |
| Precinct -21112111 | 682 | 924 | 49 | 1,655 | 41.2% | 55.8% | R+14.6 |
| Precinct -37133713 | 405 | 1,163 | 62 | 1,630 | 24.8% | 71.3% | R+46.5 |
| Precinct -42134213 | 431 | 1,019 | 44 | 1,494 | 28.8% | 68.2% | R+39.4 |
| Precinct -26112611 | 434 | 1,002 | 46 | 1,482 | 29.3% | 67.6% | R+38.3 |
| Precinct -40134013 | 568 | 867 | 45 | 1,480 | 38.4% | 58.6% | R+20.2 |
| Precinct -30123012 | 300 | 1,124 | 29 | 1,453 | 20.6% | 77.4% | R+56.7 |
| Precinct -41134113 | 581 | 724 | 45 | 1,350 | 43.0% | 53.6% | R+10.6 |
| Precinct -36133613 | 279 | 975 | 43 | 1,297 | 21.5% | 75.2% | R+53.7 |
| Precinct -49234923 | 208 | 968 | 19 | 1,195 | 17.4% | 81.0% | R+63.6 |
| Precinct -51235123 | 138 | 1,024 | 25 | 1,187 | 11.6% | 86.3% | R+74.6 |
| Precinct -02090209 | 175 | 937 | 31 | 1,143 | 15.3% | 82.0% | R+66.7 |
| Precinct -24112411 | 384 | 668 | 34 | 1,086 | 35.4% | 61.5% | R+26.2 |
| Precinct -20112011 | 349 | 666 | 33 | 1,048 | 33.3% | 63.5% | R+30.2 |
| Precinct -06090609 | 174 | 753 | 23 | 950 | 18.3% | 79.3% | R+60.9 |
| Precinct -05090509 | 158 | 705 | 16 | 879 | 18.0% | 80.2% | R+62.2 |
| Precinct -03090309 | 117 | 706 | 22 | 845 | 13.8% | 83.6% | R+69.7 |
| Precinct -14101410 | 126 | 521 | 10 | 657 | 19.2% | 79.3% | R+60.1 |
| Precinct -16101610 | 172 | 397 | 21 | 590 | 29.2% | 67.3% | R+38.1 |
| Precinct -47234723 | 75 | 296 | 8 | 379 | 19.8% | 78.1% | R+58.3 |
| Precinct -13101310 | 38 | 143 | 8 | 189 | 20.1% | 75.7% | R+55.6 |
| Precinct -11101110 | 15 | 79 | 2 | 96 | 15.6% | 82.3% | R+66.7 |
presidential history
Presidential margin, 1896–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1896 | +58.2% |
| 1900 | −1.3% |
| 1904 | −45.0% |
| 1908 | −16.7% |
| 1912 | +7.1% |
| 1916 | +10.1% |
| 1920 | −25.1% |
| 1924 | −28.7% |
| 1928 | −53.1% |
| 1932 | +14.4% |
| 1936 | +23.2% |
| 1940 | −0.8% |
| 1944 | −11.4% |
| 1948 | −9.8% |
| 1952 | −42.9% |
| 1956 | −34.5% |
| 1960 | −24.2% |
| 1964 | −11.9% |
| 1968 | −38.8% |
| 1972 | −47.5% |
| 1976 | −28.4% |
| 1980 | −42.2% |
| 1984 | −52.4% |
| 1988 | −34.6% |
| 1992 | −26.8% |
| 1996 | −30.2% |
| 2000 | −46.4% |
| 2004 | −50.6% |
| 2008 | −35.2% |
| 2012 | −37.1% |
| 2016 | −41.7% |
| 2020 | −39.7% |
| 2024 | −46.6% |
DemocraticRepublican
Federal and statewide elections · 3 House · 37 Senate · 6 Senate special · 12 governor
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
U.S. Senate
Each row shows U.S. Senate votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
U.S. Senate special elections
Each row shows U.S. Senate special votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Governor
Each row shows Governor votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+49.3
Presidential vote · 2024R+46.6
Registration and the presidential vote track closely here — within 2.7 points.
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2018 | 89,515 | 9,496 | 46,289 | 32,473 | 1,257 |
| 2020 | 109,910 | 13,558 | 60,278 | 34,331 | 1,743 |
| 2022 | 112,653 | 13,234 | 66,272 | 31,279 | 1,868 |
| 2024 | 119,889 | 13,734 | 72,830 | 31,332 | 1,993 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+5,684 net domestic migration · 2025
20112025
Net +56,398 over 2011–2025 · gain loss
Arrivals reported $65,942 in average income, against $73,453 for residents who stayed — 10% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+11.5 on average — 35 points more Democratic-leaning than Canyon County, ID itself (R+46.6).
Where arrivals came from lean of each source
- Ada County, ID3,601R+10.3
- Owyhee County, ID188R+67.6
- Payette County, ID152R+62.9
- Malheur County, OR149R+44.1
- Los Angeles County, CA132D+32.9
- Riverside County, CA122R+1.3
Where departures went households, 2022–23
- Ada County, ID2,868
- Owyhee County, ID187
- Payette County, ID168
- Gem County, ID130
- Malheur County, OR107
- Maricopa County, AZ85
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | +101 |
| 2012 | +630 |
| 2013 | +3,124 |
| 2014 | +2,092 |
| 2015 | +2,549 |
| 2016 | +2,714 |
| 2017 | +3,862 |
| 2018 | +4,966 |
| 2019 | +5,132 |
| 2021 | +10,033 |
| 2022 | +5,551 |
| 2023 | +4,662 |
| 2024 | +5,298 |
| 2025 | +5,684 |
Canyon County's Treasure Valley growth has made it one of Idaho's most populous counties, yet rapid in-migration has barely dented a presidential margin that exceeded 46 points in 2024, signaling strong partisan self-sorting among arrivals.
Across the recorded series it reached a Democratic high of 58.2 points in 1896 and a Republican high of 53.1 points in 1928. Between 2020 and 2024 the county moved 6.9 points toward the Republican candidate; the 2024 margin was 46.6 points.
A population of 250,790, a 67% non-Hispanic-white share, and a median household income of $76,488 describe the county. The county's voting pattern over the last decade is most similar to that of Twin Falls County and Elko County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin Falls County
Idaho
90.1twin score
2000–2008 trajectorymedian age≠ Swedish ancestry
Elko County
Nevada
87.8twin score
2000–2004 trajectoryelasticity% Latino≠ % Catholic
Elmore County
Idaho
85.5twin score
2000–2008 trajectorymedian age≠ population scale
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Canyon County, Idaho. Akashic. https://akashic.app/county/16027/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Canyon County
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Frequently asked questions
How did Canyon County, Idaho vote in 2024?
In 2024, Canyon County, Idaho voted Republican by 46.6 points (R+46.6), carried by the Republican candidate. Out of 101,030 votes cast, 25,669 went Democratic and 72,755 went Republican.
When did Canyon County, Idaho last vote Democratic?
The most recent presidential election in which Canyon County, Idaho voted Democratic was 1936.
How many people live in Canyon County, Idaho?
Canyon County, Idaho has a population of 250,790 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Canyon County, Idaho?
Median household income in Canyon County, Idaho is $76,488 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Canyon County, Idaho?
Akashic tracks 38 presidential elections in Canyon County, Idaho from 1876 to 2024. Of those, 4 went Democratic and 27 went Republican.