Demographics & People — Anderson Island, Washington
Population Overview
| Population (Census) | 1,341 |
| Estimated 2026 | ~1,700 |
| Median Age | 61.6 |
| Total Households | 749 |
| Family Households | 485 |
| Average Household Size | 1.79 |
| Diversity Index | 0.1577 (relatively homogeneous) |
Race & Ethnicity
| White | 1,057 |
| Black or African American | 20 |
| Asian | 15 |
| Hispanic or Latino | 62 |
Heritage & Ancestry
| Group | Count |
| Other groups | 413 |
| German | 344 |
| Unclassified or not reported | 317 |
| Irish | 224 |
| French (except Basque) | 193 |
| Norwegian | 96 |
| Russian | 96 |
| English | 69 |
| European | 60 |
| Scotch-Irish | 60 |
Language
| English Only | 1,235 |
| Spanish | 41 |
| Population 5+ | 1,341 |
Veterans
| Veterans | 212 |
| Population 18+ | 1,486 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Anderson Island, Washington.