Demographics & People — Eureka, Wisconsin
Population Overview
| Population (Census) | 255 |
| Estimated 2026 | ~100 |
| Median Age | 55.2 |
| Total Households | 95 |
| Family Households | 70 |
| Average Household Size | 2.68 |
| Diversity Index | 0.167 (relatively homogeneous) |
Race & Ethnicity
| White | 244 |
| Black or African American | 11 |
| Asian | 0 |
| Hispanic or Latino | 13 |
Heritage & Ancestry
| Group | Count |
| German | 126 |
| Unclassified or not reported | 89 |
| American | 24 |
| Polish | 23 |
| Irish | 17 |
| English | 15 |
| Hispanic: Mexican | 13 |
| Hispanic: Hispanic or Latino | 13 |
| Ethiopian | 11 |
| Subsaharan African | 11 |
Language
| English Only | 215 |
| Spanish | 7 |
| Population 5+ | 222 |
Veterans
| Veterans | 12 |
| Population 18+ | 198 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Eureka, Wisconsin.