Lake Oswego city, Oregon
Official LSAD Designation: Lake Oswego city • Census GEOID: 4140550
• Clackamas County / Multnomah County / Washington County
Demographics & Population Profile
Population and demographics for Lake Oswego city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 39,722 | — | 2025 | Census |
| Median Age | 46.7 yrs | ±1.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 16,873 | ±445 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).