ZIP code · Mill Spring · North Carolina · United States
ZIP code 28756 — Mill Spring
ZIP code 28756 serves Mill Spring, North Carolina.
- Postal code
- 28756Single source Value from one source, not cross-checked.
- City
- Mill Spring
- County
- Polk FIPS 37149
- State
- North Carolina
- Country
- United States
- Coordinates
- 35.3338, -82.1557 — precision precise (locality)
View on OpenStreetMap - Population
- 4,468 (ZCTA, ACS 5-year)
- Population density
- 56 / sq mi
- Land area
- 79.3 sq mi (205.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $54,112
- Per-capita income
- $36,251
- Median age
- 46
- Households
- 1,793
- Housing units
- 2,375
- Median home value
- $275,000
- Median gross rent
- $662 / month
- Congressional districts
- NC-11 (also NC-14) (119th Congress)
- USDA hardiness zone
- 8a (10 to 15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 828 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 28756 with another ZIP · ZIPs within 25 miles · distance from 28756
Map of ZIP code 28756
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 28°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 50 | 55 | 62 | 72 | 78 | 85 | 88 | 87 | 81 | 72 | 63 | 53 |
| Avg low °F | 28 | 30 | 36 | 44 | 54 | 63 | 67 | 66 | 59 | 47 | 36 | 31 |
| Precip in | 5.0 | 4.1 | 4.8 | 4.6 | 4.9 | 5.3 | 5.9 | 6.5 | 5.0 | 4.3 | 4.3 | 4.7 |
NOAA 1991–2020 climate normals from the nearest station: LAKE LURE 2 (6.2 mi) · NOAA NCEI
Places in ZIP 28756
- 3 schools
- 2 parks
- 2 playgrounds
- 1 post offices
- 13 places of worship
- 3 gas stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page