ZIP code · Charleston · South Carolina · United States

ZIP code 29402 — Charleston

ZIP code 29402 serves Charleston, South Carolina.

Postal code: 29402
Single source Value from one source, not cross-checked.
City: Charleston
County: Charleston
State: South Carolina
Country: United States
Coordinates: 32.7766, -79.9309 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 9a (20 to 25 °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 codes: 843, 854
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 29402 with another ZIP · ZIPs within 25 miles · distance from 29402

Climate — monthly normals

Warmest month Jul (avg high 88°F), coldest Jan (avg low 44°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	58	60	66	72	79	84	88	86	83	76	67	61
Avg low °F	44	46	52	60	68	74	77	77	73	63	53	47
Precip in	2.6	2.6	3.0	3.0	2.6	4.8	5.1	6.1	5.3	4.1	2.3	2.9

NOAA 1991–2020 climate normals from the nearest station: CHARLESTON CITY (0.2 mi) · NOAA NCEI

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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page