| Donald Trump ✓Republican | 67.7% | 7,218 |
|---|---|---|
| Kamala HarrisDemocratic | 30.0% | 3,199 |
| OtherAll other candidates | 2.3% | 247 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −6.4% |
| 2012 | −18.3% |
| 2016 | −36.2% |
| 2020 | −36.1% |
| 2024 | −37.7% |
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 3,199 | 7,218 | 10,664 | ||
| R | 3,146 | 6,861 | 10,302 | ||
| R | 2,577 | 5,833 | 9,001 | ||
| R | 3,673 | 5,372 | 9,264 | ||
| R | 4,434 | 5,051 | 9,679 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | WatertownCity | South DakotaState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 90.1% | 80.7% | 61.0% |
| Black | 1.3% | 2.2% | 12.2% |
| Asian | 0.7% | 1.4% | 6.0% |
| Two or more races | 4.8% | 6.5% | 12.6% |
| Other race | 3.1% | 9.2% | 8.2% |
| Hispanic or Latino | 2.9% | 4.8% | 19.3% |
| Income & Age | |||
| Median household income | $69,600 | $75,081 | $84,427 |
| Poverty rate | 9.0% | 12.0% | 12.5% |
| Median age | 39.5 | 38.2 | 39.1 |
| Age 18–24 | 8.8% | 9.2% | 9.2% |
| Age 65 and older | 19.7% | 18.0% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 21.6% | 31.9% | 35.7% |
| Speaks a non-English language at home | 2.6% | 7.1% | 22.3% |
| Spanish | 1.5% | 2.6% | 13.6% |
| Ancestry | |||
| Largest ancestry | German 39.8% | German 33.1% | German 12.5% |
| 2nd-largest ancestry | Irish 9.1% | Irish 9.9% | English 9.5% |
| 3rd-largest ancestry | English 6.2% | English 7.7% | Irish 9.4% |
| Religion | |||
| Catholic | 21.1%County context | 14.8% | 18.6% |
| Evangelical Protestant | 18.0%County context | 20.1% | 16.5% |
| Unaffiliated or unclaimed | 34.7%County context | 44.9% | 51.5% |
| Mainline Protestant | 24.5%County context | 18.0% | 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.
Watertown sits in the Northern Plains. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 37.7 points in 2024. Between 2020 and 2024 the city moved 1.6 points toward the Republican candidate; the 2024 margin was 37.7 points.
A population of 23,044, a 90% non-Hispanic-white share, and a median household income of $69,600 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 →
Watertown, South Dakota. Akashic. https://akashic.app/city/4669300/. Accessed May 20, 2026. License: CC BY 4.0.