Idaho Falls, ID, Idaho: Populist metro. In 2024, voted R+52%. Republican peak: R+67 in 1984.
Key facts
- 2024 presidential margin
- R+52MIT Election Lab
- Political archetype
- PopulistAkashic typology
- Population
- 165,3612024 5-year
- Median household income
- $80,1712024 5-year
- White (non-Hispanic)
- 85.1%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 13.7%2024 5-year
- Peak Democratic margin
- D+42 in 1936MIT Election Lab
- Peak Republican margin
- R+67 in 1984MIT Election Lab
Constituent county margins for Idaho Falls, ID, IDOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 16,534 | 54,802 | 73,749 | ||
| R | 16,103 | 51,106 | 69,622 | ||
| R | 10,066 | 36,049 | 56,913 | ||
| R | 11,464 | 43,172 | 55,880 | ||
| R | 13,376 | 38,930 | 53,554 | ||
| R | 9,761 | 38,828 | 49,183 | ||
| R | 8,689 | 32,522 | 42,852 | ||
| R | 10,947 | 25,643 | 42,244 | ||
| R | 8,425 | 20,630 | 43,995 | ||
| R | 8,751 | 28,807 | 38,240 | ||
| R | 6,049 | 31,407 | 37,738 | ||
| R | 6,309 | 31,850 | 40,567 | ||
| R | 9,638 | 20,143 | 30,765 | ||
| R | 5,301 | 16,905 | 27,972 | ||
| R | 6,654 | 17,200 | 27,167 | ||
| R | 12,546 | 14,125 | 26,671 | ||
| R | 12,220 | 14,416 | 26,636 | ||
| R | 8,168 | 14,621 | 22,789 | ||
| R | 6,684 | 14,138 | 20,828 | ||
| D | 7,825 | 6,401 | 14,415 | ||
| D | 7,549 | 5,937 | 13,513 | ||
| D | 8,970 | 6,139 | 15,135 | ||
| D | 8,761 | 3,562 | 12,520 | ||
| D | 7,380 | 4,354 | 11,926 | ||
| R | 3,761 | 5,382 | 9,161 | ||
| R | 932 | 4,682 | 9,042 | ||
| R | 2,476 | 5,700 | 8,176 | ||
| D | 3,947 | 2,729 | 6,896 | ||
| R | 864 | 1,176 | 3,038 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
25.9%
German
13.1%
American
6.6%
Irish
5.8%
Scottish
3.3%
Italian
2.3%
French
1.8%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 33.6 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$80,171
Idaho Falls, ID ranks near the middle of US counties.
Idaho Falls, ID$80,171
Idaho$77,800
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
9.9%
Child poverty is below the national average.
Children under 1813.3%
Working age (18–64)8.3%
Seniors (65+)10.5%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
90.0%
speak English only
Spanish8.7%
Other Indo-European0.9%
Asian & Pacific Islander0.4%
Other languages0.1%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 29.6% of residents not counted as adherents by any reporting body.
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.
The Democratic margin in Idaho Falls, ID peaked at forty-two points in 1936. By 1952 the metro had flipped, voting Republican for the first time in many years. The 2024 margin was fifty-two points, the most Republican-leaning result in the metro's modern history.
The economic context is the key. The median household income of $80,171 sits well below state and national norms, and 10% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Idaho Falls, ID, Idaho — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cbsa/26820/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Idaho Falls, ID, Idaho vote in 2024?
In 2024, Idaho Falls, ID, Idaho voted Republican by 51.9 points (R+52), carried by the Republican candidate. Out of 73,749 votes cast, 16,534 went Democratic and 54,802 went Republican.
What is Idaho Falls, ID, Idaho's political archetype?
Akashic classifies Idaho Falls, ID, Idaho as a "Populist" metro based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the metro has voted Democratic 6 times, Republican 23 times, and other 0 times.
When did Idaho Falls, ID, Idaho last vote Democratic?
The most recent presidential election in which Idaho Falls, ID, Idaho voted Democratic was 1948.
How many people live in Idaho Falls, ID, Idaho?
Idaho Falls, ID, Idaho 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, Idaho?
Median household income in Idaho Falls, ID, Idaho 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, Idaho?
Akashic tracks 38 presidential elections in Idaho Falls, ID, Idaho from 1876 to 2024. Of those, 6 went Democratic and 23 went Republican. The metro's archetype — "Populist" — captures the overall trajectory of that voting record.