| Official Zip Code Name | Mill Spring |
| Zip Code State | North Carolina |
| Primary County: | Polk |
| Area Code | 828 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 972 ft. |
| Area | 79.323 Sqm. |
| Coordinates(Y,X) | 35.335904, -82.164235 |