HarrisDemocratic22.4%16,534TrumpRepublican74.3%54,802OtherAll other candidates3.3%2,414
R+51.9- Lead
- 38,268
- Total
- 73,750
- vs nation
- R+50.4
Akashicmetro area
Idaho Falls, ID
Office (updates table and map)
President margin by year
Place winner margin
3 counties by 2024 margin · County returns · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic23.1%16,103TrumpRepublican73.4%51,106OtherAll other candidates3.5%2,413
R+50.3- Lead
- 35,003
- Total
- 69,622
- vs nation
- R+54.7
ClintonDemocratic17.7%10,066TrumpRepublican63.3%36,049OtherAll other candidates19.0%10,798
R+45.7- Lead
- 25,251
- Total
- 56,913
- vs nation
- R+47.7
ObamaDemocratic20.5%11,464RomneyRepublican77.3%43,172OtherAll other candidates2.2%1,244
R+56.7- Lead
- 31,708
- Total
- 55,880
- vs nation
- R+60.6
ObamaDemocratic25.0%13,376McCainRepublican72.7%38,930OtherAll other candidates2.3%1,248
R+47.7- Lead
- 25,554
- Total
- 53,554
- vs nation
- R+55.0
KerryDemocratic19.8%9,761BushRepublican78.9%38,828OtherAll other candidates1.2%594
R+59.1- Lead
- 29,067
- Total
- 49,183
- vs nation
- R+56.6
GoreDemocratic20.3%8,689BushRepublican75.9%32,522OtherAll other candidates3.8%1,641
R+55.6- Lead
- 23,833
- Total
- 42,852
- vs nation
- R+56.1
ClintonDemocratic25.9%10,947DoleRepublican60.7%25,643OtherAll other candidates13.4%5,654
R+34.8- Lead
- 14,696
- Total
- 42,244
- vs nation
- R+43.3
Key facts
- 2024 presidential margin
- R+51.9MIT Election Lab
- Population
- 165,3612024 5-year
- Population density
- 32 / sq mi2024 5-year · TIGER/Line
- Land area
- 5,196 sq miTIGER/Line
- Median household income
- $80,1712024 5-year
- White (non-Hispanic)
- 81.4%2024 5-year
- Black
- 0.2%2024 5-year
- Hispanic / Latino
- 13.7%2024 5-year
- Peak Democratic margin
- D+41.5 in 1936MIT Election Lab
- Peak Republican margin
- R+67.2 in 1984MIT Election Lab
- Most similar
- Brigham City, UT-ID · twin score 97.8
presidential history
Party record book
Idaho Falls, ID · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1912–2024 · 29 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
70.0%
8,761 votes · D+41.5
Runner-up · Franklin D. Roosevelt, 1932 · 61.9%
Republican
Ronald Reagan1984
83.2%
31,407 votes · R+67.2
Runner-up · George W. Bush, 2004 · 78.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
16,534votes
22.4% of the vote · R+51.9
Runner-up · Joe Biden, 2020 · 16,103 votes
Republican
Donald Trump2024
54,802votes
74.3% of the vote · R+51.9
Runner-up · Donald Trump, 2020 · 51,106 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Franklin D. Roosevelt1936
+17.3pts D vs U.S.
Place D+41.5 · U.S. D+24.3
Runner-up · Woodrow Wilson, 1916 · +14.5 pts
Republican
Mitt Romney2012
+60.6pts R vs U.S.
Place R+56.7 · U.S. D+3.9
Runner-up · George W. Bush, 2004 · +56.6 pts
U.S. House elections · 1 House
Senate and governor results are in the Office selector at the top of this page.
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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2020 | R | 23.3%9,587 | 76.7%31,621 | 41,208 |
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+58.9
Presidential vote · 2024R+51.9
Registration leans Republican; the presidential vote runs 7.0 points more Democratic than the rolls.
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2018 | 66,878 | 4,364 | 40,944 | 20,904 | 666 |
| 2020 | 78,872 | 6,530 | 48,886 | 22,488 | 968 |
| 2022 | 75,967 | 5,864 | 50,287 | 18,793 | 1,023 |
| 2024 | 81,380 | 6,341 | 54,258 | 19,640 | 1,141 |
domestic migration
Who moves in and out
Net domestic migration over time
+1,501 net domestic migration · 2025
20112025
Net +14,858 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | −546 |
| 2012 | −223 |
| 2013 | −830 |
| 2014 | −330 |
| 2015 | +126 |
| 2016 | +1,466 |
| 2017 | +1,710 |
| 2018 | +1,658 |
| 2019 | +1,775 |
| 2021 | +3,778 |
| 2022 | +1,732 |
| 2023 | +1,576 |
| 2024 | +1,465 |
| 2025 | +1,501 |
Idaho Falls anchors eastern Idaho's Snake River Plain and posts some of the state's most lopsided Republican margins, driven by a predominantly Latter-day Saint population and an economy tied to the Idaho National Laboratory and agriculture.
Across the recorded series it reached a Democratic high of 41.5 points in 1936 and a Republican high of 67.2 points in 1984. Between 2020 and 2024 the metro moved 1.6 points toward the Republican candidate; the 2024 margin was 51.9 points.
A population of 165,361, a 81% non-Hispanic-white share, and a median household income of $80,171 describe the metro. The metro's voting pattern over the last decade is most similar to that of Brigham City, UT-ID and St. George, UT.
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Brigham City, UT-ID
97.8twin score
2000–2012 trajectory≠ % unaffiliated
St. George, UT
96.7twin score
2000–2012 trajectory≠ median age
Cedar City, UT
95.4twin score
2000–2012 trajectory≠ % unaffiliated
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.
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.
Idaho Falls, ID. Akashic. https://akashic.app/cbsa/26820/. Accessed May 20, 2026. License: CC BY 4.0.
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Places within Idaho Falls, ID
Frequently asked questions
How did Idaho Falls, ID vote in 2024?
In 2024, Idaho Falls, ID voted Republican by 51.9 points (R+51.9), carried by the Republican candidate. Out of 73,750 votes cast, 16,534 went Democratic and 54,802 went Republican.
When did Idaho Falls, ID last vote Democratic?
The most recent presidential election in which Idaho Falls, ID voted Democratic was 1948.
How many people live in Idaho Falls, ID?
Idaho Falls, ID has a population of 165,361 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Idaho Falls, ID?
Median household income in Idaho Falls, ID is $80,171 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Idaho Falls, ID?
Akashic tracks 34 presidential elections in Idaho Falls, ID from 1892 to 2024. Of those, 6 went Democratic and 23 went Republican.