North Irwin borough, Pennsylvania
Official LSAD Designation: North Irwin borough • Census GEOID: 4255136
• Westmoreland County
Demographics & Population Profile
Population and demographics for North Irwin borough.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 804 | — | 2025 | Census |
| Median Age | 37.6 yrs | ±7.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 393 | ±76 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).