ZIP code · Swannanoa · North Carolina · United States

ZIP code 28778 — Swannanoa

ZIP code 28778 serves Swannanoa, North Carolina.

Postal code
28778
Single source Value from one source, not cross-checked.
City
Swannanoa
County
Buncombe FIPS 37021
State
North Carolina
Country
United States
Coordinates
35.6172, -82.4070 — precision precise (locality)
View on OpenStreetMap
Population
11,933 (ZCTA, ACS 5-year)
Population density
367 / sq mi
Land area
32.5 sq mi (84.1 km²) (ZCTA, ACS 5-year)
Median household income
$72,717
Per-capita income
$28,780
Median age
41.5
Households
3,739
Housing units
4,865
Median home value
$273,800
Median gross rent
$1,004 / month
Congressional district
NC-11 (119th Congress)
USDA hardiness zone
7a (0 to 5 °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
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.

Climate — monthly normals

Warmest month Jul (avg high 84°F), coldest Jan (avg low 26°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F495259687581848378695951
Avg low °F262834425158626155443329

NOAA 1991–2020 climate normals from the nearest station: BLACK MTN 2 W (2.7 mi) · NOAA NCEI

Places in ZIP 28778

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