Demographics & People — Seneca, Wisconsin
Population Overview
| Population (Census) | 336 |
|---|
| Estimated 2026 | ~500 |
|---|
| Median Age | 35.9 |
|---|
| Total Households | 99 |
|---|
| Family Households | 69 |
|---|
| Average Household Size | 3.39 |
|---|
| Diversity Index | 0.0617 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 334 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 11 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Norwegian | 177 |
| Irish | 170 |
| Unclassified or not reported | 46 |
| German | 43 |
| English | 16 |
| American | 8 |
| Other groups | 8 |
| Dutch | 6 |
| Swiss | 5 |
| French (except Basque) | 4 |
Language
| English Only | 329 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 331 |
|---|
Veterans
| Veterans | 3 |
|---|
| Population 18+ | 231 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Seneca, Wisconsin.
