Demographics & People — Oso, Washington
Population Overview
| Population (Census) | 400 |
|---|
| Estimated 2026 | ~100 |
|---|
| Median Age | 40.2 |
|---|
| Total Households | 96 |
|---|
| Family Households | 96 |
|---|
| Average Household Size | 4.17 |
|---|
| Diversity Index | 0.401 (moderately diverse) |
|---|
Race & Ethnicity
| White | 289 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 111 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| German | 235 |
| English | 180 |
| Norwegian | 65 |
| Other groups | 40 |
| Dutch | 22 |
| Irish | 16 |
Language
| English Only | 400 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 400 |
|---|
Veterans
| Veterans | 12 |
|---|
| Population 18+ | 156 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Oso, Washington.
