Onaka vs Seneca
A side-by-side comparison of Onaka and Seneca: population, income, housing, and more.
Onaka and Seneca are places in South Dakota. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
Seneca has the higher population (26 vs 23 in Onaka). Since 2019, Onaka's population has grown faster (+475.0% vs -35.0%).
Population, income & housing
| Onaka | Seneca | |
|---|---|---|
| Population | 23 | 26 |
| Median age | 13.5 yrs | 62.8 yrs |
| Median household income | — | $40,750 |
| Median home value | — | $28,500 |
| Housing units | 11 | 30 |
| Homeownership rate | 100.0% | 100.0% |
| Bachelor's degree or higher | 50.0% | 0.0% |
| Unemployment rate | 0.0% | 0.0% |
Trends (ACS 5-year, 2019–2023)
| Onaka | Seneca | |
|---|---|---|
| Population | 4 → 23 (+475.0%) | 40 → 26 (-35.0%) |
| Median household income | — | $43,438 → $40,750 (-6.2%) |
| Median home value | — | $38,100 → $28,500 (-25.2%) |
Onaka
423
Seneca
4026
$43,438$40,750
$38,100$28,500
Age & race/ethnicity
Age distribution (share)
| Onaka | Seneca | |
|---|---|---|
| Under 5 | 30.4% | 0.0% |
| 5 to 17 | 26.1% | 0.0% |
| 18 to 24 | 0.0% | 0.0% |
| 25 to 34 | 0.0% | 0.0% |
| 35 to 44 | 21.7% | 3.8% |
| 45 to 54 | 0.0% | 0.0% |
| 55 to 64 | 0.0% | 69.2% |
| 65 to 74 | 21.7% | 7.7% |
| 75 and over | 0.0% | 19.2% |
Race & ethnicity (share)
| Onaka | Seneca | |
|---|---|---|
| White (non-Hispanic) | 100.0% | 100.0% |
| Black or African American | 0.0% | 0.0% |
| American Indian & Alaska Native | 0.0% | 0.0% |
| Asian | 0.0% | 0.0% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.0% | 0.0% |
| Two or more races | 0.0% | 0.0% |
| Hispanic or Latino | 0.0% | 0.0% |
Educational attainment (age 25+)
Share of adults 25+
| Onaka | Seneca | |
|---|---|---|
| No high school diploma | 0.0% | 15.4% |
| High school graduate | 30.0% | 53.8% |
| Some college or associate's | 20.0% | 30.8% |
| Bachelor's degree | 50.0% | 0.0% |
| Graduate or professional degree | 0.0% | 0.0% |
Commute to work
How workers get to work (share)
| Onaka | Seneca | |
|---|---|---|
| Drove alone | 0.0% | 90.9% |
| Carpooled | 37.5% | 0.0% |
| Public transit | 0.0% | 0.0% |
| Walked | 0.0% | 9.1% |
| Bicycle | 0.0% | 0.0% |
| Worked from home | 62.5% | 0.0% |
| Other means | 0.0% | 0.0% |
Housing
Units in structure (share)
| Onaka | Seneca | |
|---|---|---|
| 1-unit, detached | 100.0% | 100.0% |
| 1-unit, attached | 0.0% | 0.0% |
| 2 to 4 units | 0.0% | 0.0% |
| 5 to 19 units | 0.0% | 0.0% |
| 20 or more units | 0.0% | 0.0% |
| Mobile home & other | 0.0% | 0.0% |
Poverty & households
| Onaka | Seneca | |
|---|---|---|
| Poverty rate | 100.0% | 19.2% |
| Average household size | 3.29 | 1.53 |
| Median year structure built | 1949 | 1938 |
Full profiles
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