Arlington city, Washington
Official LSAD Designation: Arlington city • Census GEOID: 5302585
• Snohomish County
Demographics & Population Profile
Population and demographics for Arlington city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 22,031 | — | 2025 | Census |
| Median Age | 36.6 yrs | ±1.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 7,695 | ±408 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).