Boundary County, Idaho: Heartland Swing county. In 2024, voted R+65%. Republican peak: R+65 in 2024.
Key facts
- 2024 presidential margin
- R+65MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 13,1722024 5-year
- Median household income
- $67,2372024 5-year
- White (non-Hispanic)
- 82.9%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 5.7%2024 5-year
- Peak Democratic margin
- D+30 in 1932MIT Election Lab
- Peak Republican margin
- R+65 in 2024MIT Election Lab
- Most similar
- Adams County, ND · similarity 1.00
2024 results by precinct
2024 precinct map of Boundary CountyPrecinct-level 2024 presidential results for Boundary County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | No data |
| 1896 | No data |
| 1900 | No data |
| 1904 | No data |
| 1908 | No data |
| 1912 | No data |
| 1916 | +4.1% |
| 1920 | −25.4% |
| 1924 | −33.1% |
| 1928 | −24.8% |
| 1932 | +30.1% |
| 1936 | +26.5% |
| 1940 | +6.4% |
| 1944 | −0.5% |
| 1948 | +5.7% |
| 1952 | −22.3% |
| 1956 | −10.5% |
| 1960 | +9.6% |
| 1964 | +14.2% |
| 1968 | −8.8% |
| 1972 | −27.1% |
| 1976 | −8.6% |
| 1980 | −28.5% |
| 1984 | −29.4% |
| 1988 | −14.5% |
| 1992 | −10.2% |
| 1996 | −19.2% |
| 2000 | −50.6% |
| 2004 | −39.8% |
| 2008 | −33.7% |
| 2012 | −42.1% |
| 2016 | −55.3% |
| 2020 | −58.9% |
| 2024 | −65.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,145 | 5,794 | 7,110 | ||
| R | 1,220 | 4,937 | 6,313 | ||
| R | 933 | 3,789 | 5,162 | ||
| R | 1,225 | 3,138 | 4,544 | ||
| R | 1,484 | 3,078 | 4,733 | ||
| R | 1,268 | 3,012 | 4,379 | ||
| R | 832 | 2,797 | 3,884 | ||
| R | 1,194 | 1,937 | 3,870 | ||
| R | 1,095 | 1,479 | 3,774 | ||
| R | 1,336 | 1,800 | 3,202 | ||
| R | 1,158 | 2,159 | 3,402 | ||
| R | 1,087 | 2,088 | 3,513 | ||
| R | 1,217 | 1,458 | 2,796 | ||
| R | 860 | 1,587 | 2,678 | ||
| R | 883 | 1,084 | 2,297 | ||
| D | 1,418 | 1,065 | 2,483 | ||
| D | 1,501 | 1,237 | 2,738 | ||
| R | 1,150 | 1,419 | 2,569 | ||
| R | 1,040 | 1,641 | 2,691 | ||
| D | 1,029 | 910 | 2,099 | ||
| R | 1,053 | 1,064 | 2,160 | ||
| D | 1,393 | 1,221 | 2,684 | ||
| D | 1,304 | 732 | 2,162 | ||
| D | 1,451 | 763 | 2,288 | ||
| R | 607 | 1,015 | 1,646 | ||
| R | 244 | 829 | 1,765 | ||
| R | 525 | 883 | 1,408 | ||
| D | 653 | 598 | 1,357 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
15.4%
Irish
10.7%
English
9.5%
American
6.6%
Italian
4.2%
Scottish
2.3%
French
1.6%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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.
2024 ACS
Age distribution by sex
Median age: 43.7 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$67,237
Boundary County ranks near the middle of US counties.
Boundary County$67,237
Idaho$77,800
United States$80,734
Boundary County ranks near the middle of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
13.6%
Children face moderate poverty.
Children under 1817.8%
Working age (18–64)12.8%
Seniors (65+)9.3%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
93.2%
speak English only
Spanish2.8%
Other Indo-European2.0%
Asian & Pacific Islander1.5%
Other languages0.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 63.8% of residents not counted as adherents by any reporting body.
Tucked into Idaho's panhandle along the Canadian border, Boundary County delivered one of the state's widest presidential margins in 2024, reflecting the deep-red alignment common to rural, timber-economy communities in the inland Northwest.
The Democratic margin here peaked at thirty points in 1932. Between 2020 and 2024 the county moved seven points toward the Republican candidate; the 2024 margin was sixty-five points.
A population of 13,172, a 83% non-Hispanic-white share, and a median household income of $67,237 describe the county. The county's voting pattern over the last decade is most similar to that of Adams County and Stevens County.
Most similar counties
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.
Boundary County, Idaho. Akashic. https://akashic.app/county/16021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Boundary County, Idaho vote in 2024?
In 2024, Boundary County, Idaho voted Republican by 65.4 points (R+65), carried by the Republican candidate. Out of 7,110 votes cast, 1,145 went Democratic and 5,794 went Republican.
What is Boundary County, Idaho's political typology?
Akashic places Boundary County, Idaho in the "Heartland Swing" typology — Industrial Midwest swing counties drifting steadily toward the Republican Party. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 7 times, Republican 21 times, and other 0 times.
When did Boundary County, Idaho last vote Democratic?
The most recent presidential election in which Boundary County, Idaho voted Democratic was 1964.
How many people live in Boundary County, Idaho?
Boundary County, Idaho has a population of 13,172 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boundary County, Idaho?
Median household income in Boundary County, Idaho is $67,237 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Boundary County, Idaho?
Akashic tracks 38 presidential elections in Boundary County, Idaho from 1876 to 2024. Of those, 7 went Democratic and 21 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.