New Castle town, Colorado
Official LSAD Designation: New Castle town • Census GEOID: 0853395
• Garfield County
Demographics & Population Profile
Population and demographics for New Castle town.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 4,896 | — | 2025 | Census |
| Median Age | 38.7 yrs | ±7.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 2,027 | ±236 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).