Demographics & People — Seneca, South Dakota
Population Overview
| Population (Census) | 26 |
|---|
| Estimated 2026 | ~0 |
|---|
| Median Age | 67.3 |
|---|
| Total Households | 17 |
|---|
| Family Households | 6 |
|---|
| Average Household Size | 1.53 |
|---|
| Diversity Index | N/A (N/A) |
|---|
Race & Ethnicity
| White | 26 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 0 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 21 |
| German | 16 |
| English | 8 |
| Norwegian | 5 |
| Swiss | 4 |
| Polish | 3 |
| Irish | 1 |
| Dutch | 1 |
| French (except Basque) | 1 |
Language
| English Only | 21 |
|---|
| Spanish | 5 |
|---|
| Population 5+ | 26 |
|---|
Veterans
| Veterans | 6 |
|---|
| Population 18+ | 42 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Seneca, South Dakota.
