Demographics & People — Arlington, Washington
Population Overview
| Population (Census) | 20,599 |
| Estimated 2026 | ~22,300 |
| Median Age | 36.6 |
| Total Households | 7,565 |
| Family Households | 5,064 |
| Average Household Size | 2.71 |
| Diversity Index | 0.3716 (somewhat diverse) |
Race & Ethnicity
| White | 15,582 |
| Black or African American | 274 |
| Asian | 1,125 |
| Hispanic or Latino | 3,118 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 5,330 |
| Other groups | 4,937 |
| Hispanic: Hispanic or Latino | 2,959 |
| German | 2,850 |
| English | 2,567 |
| Hispanic: Mexican | 1,994 |
| Irish | 1,711 |
| Norwegian | 1,540 |
| American | 1,116 |
| Scottish | 851 |
Language
| English Only | 16,294 |
| Spanish | 1,877 |
| Population 5+ | 19,336 |
Veterans
| Veterans | 1,856 |
| Population 18+ | 15,223 |
Commuting
| Mean Commute Time | 29.9 minutes |
| Work from Home | 11.9% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Arlington, Washington.