| Place Name | New Castle |
| Place Type | Town |
| ZIP Code(s) | 81647 |
| County | Garfield County |
| Area Code(s) | 970 |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2022) | 4,426 |
| Population Growth Rate (2010-19) | 8.96% |
| Majority Ethnicity | White 74.59% |
| Metro/Micro Stats Area | Glenwood Springs, CO |
| US Congressional District(s) | Colorado 3rd |
| State House Districts | 57 |
| State Senate Districts | 8 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 74.59% |
| African American | 0% |
| Hispanic | 0.22% |
| Asian | 0.71% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 24.47% |