Monroe city, Washington
Official LSAD Designation: Monroe city • Census GEOID: 5346685
• Snohomish County
Demographics & Population Profile
Population and demographics for Monroe city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 20,025 | — | 2025 | Census |
| Median Age | 35.7 yrs | ±1.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 6,280 | ±295 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).