Castle Shannon borough, Pennsylvania
Official LSAD Designation: Castle Shannon borough • Census GEOID: 4211680
• Allegheny County
Demographics & Population Profile
Population and demographics for Castle Shannon borough.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 8,006 | — | 2025 | Census |
| Median Age | 40 yrs | ±3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 3,788 | ±257 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).