| Donald Trump ✓Republican | 81.1% | 2,253 |
|---|---|---|
| Kamala HarrisDemocratic | 16.2% | 450 |
| OtherAll other candidates | 2.7% | 74 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −45.4% |
| 2012 | −53.4% |
| 2016 | −64.6% |
| 2020 | −65.5% |
| 2024 | −64.9% |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 16.2%Harris450 | 81.1%Trump2,253 | 2.7% | 2,777 | ||
| R | 16.1%Biden502 | 81.6%Trump2,545 | 2.3%incl. Jorgensen | 3,120 | ||
| R | 14.6%Clinton369 | 79.2%Trump1,997 | 6.1%incl. Johnson | 2,520 | ||
| R | 21.5%Obama555 | 74.9%Romney1,934 | 3.6% | 2,583 | ||
| R | 25.7%Obama641 | 71.1%McCain1,772 | 3.2% | 2,492 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | SidneyCity | MontanaState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 86.2% | 85.0% | 61.0% |
| Black | 0.0% | 0.5% | 12.2% |
| Asian | 0.2% | 0.8% | 6.0% |
| Two or more races | 9.4% | 6.8% | 12.6% |
| Other race | 3.2% | 6.9% | 8.2% |
| Hispanic or Latino | 8.0% | 4.6% | 19.3% |
| Income & Age | |||
| Median household income | $62,538 | $72,509 | $84,427 |
| Poverty rate | 7.7% | 11.5% | 12.5% |
| Median age | 37.3 | 40.8 | 39.1 |
| Age 18–24 | 8.1% | 9.1% | 9.2% |
| Age 65 and older | 17.5% | 20.0% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 22.0% | 35.3% | 35.6% |
| Speaks a non-English language at home | 3.7% | 4.2% | 22.3% |
| Spanish | 1.6% | 1.5% | 13.6% |
| Ancestry | |||
| Largest ancestry | German 30.9% | German 22.9% | German 12.5% |
| 2nd-largest ancestry | Norwegian 18.0% | Irish 13.5% | Mexican 11.3% |
| 3rd-largest ancestry | American 11.4% | English 13.1% | English 9.5% |
| Religion | |||
| Catholic | 10.7%County context | 10.3% | 18.6% |
| Evangelical Protestant | 8.6%County context | 13.6% | 16.5% |
| Unaffiliated or unclaimed | 62.4%County context | 65.3% | 51.5% |
| Mainline Protestant | 16.5%County context | 4.7% | 5.2% |
ACS values are survey estimates and may include margins of error.
Religion data may be available only at county or larger geographies. Sub-county values are labeled when inherited, modeled, or contextual.
Sidney sits in the Northern Rockies. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 65.5 points in 2020. Between 2020 and 2024 the city moved 0.6 points toward the Democratic candidate; the 2024 margin was 64.9 points.
A population of 6,171, a 86% non-Hispanic-white share, and a median household income of $62,538 describe the city.
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 →
Sidney, Montana. Akashic. https://akashic.app/city/3067900/. Accessed May 20, 2026. License: CC BY 4.0.