| Official Zip Code Name | Newcastle |
| Zip Code State | Wyoming |
| Primary County: | Weston |
| Area Code | 307 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 7 |
| Elevation Range | 4261 ft. |
| Area | 1798.496 Sqm. |
| Coordinates(Y,X) | 43.840036, -104.568130 |