| Official Name: | Mill Spring, North Carolina |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | North Carolina#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | North Carolina |
| Subdivision Type2: | County |
| Subdivision Name2: | Polk |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1001 |
| Coordinates: | 35.2975°N -82.1611°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 28756 |
| Area Code: | 828 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1021460 |
Mill Spring is an unincorporated community in Polk County, North Carolina, United States. Mill Spring is located at the junction of North Carolina Highway 9 and North Carolina Highway 108 3.7miles northeast of Columbus. Mill Spring has a post office with ZIP code 28756.[1] [2] Mill Spring is named after Colonel Ambrose Mills. He founded a saw mill and post office in the community.
Mill Spring was the hometown of Bryant H. Womack, recipient of the Medal of Honor for actions during the Korean War.
The Rev. Joshua D. Jones House was added to the National Register of Historic Places in 1991.
The Tryon International Equestrian Center, in Mill Spring, was the location of the 2018 FEI World Equestrian Games.[3]