Demographics & People — Waterloo, Oregon
Population Overview
| Population (Census) | 242 |
| Estimated 2026 | ~200 |
| Median Age | 49.5 |
| Total Households | 79 |
| Family Households | 62 |
| Average Household Size | 3.06 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 229 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 10 |
Heritage & Ancestry
| Group | Count |
| German | 65 |
| Portuguese | 54 |
| Other groups | 45 |
| Unclassified or not reported | 43 |
| English | 29 |
| French (except Basque) | 24 |
| Norwegian | 19 |
| Irish | 17 |
| Welsh | 9 |
| European | 8 |
Language
| English Only | 226 |
| Spanish | 9 |
| Population 5+ | 237 |
Veterans
| Veterans | 28 |
| Population 18+ | 208 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Waterloo, Oregon.