New Castle city, Pennsylvania
Official LSAD Designation: New Castle city • Census GEOID: 4253368
• Lawrence County
Demographics & Population Profile
Population and demographics for New Castle city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 21,175 | — | 2025 | Census |
| Median Age | 39.5 yrs | ±1.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 9,406 | ±309 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).