ZIP codes

ZIP codes in Charleston County, South Carolina

Charleston County has 29 ZIP codes. 19 lie entirely inside it and 10 are shared with neighboring counties, so part of their land and their people are elsewhere. About 417,983 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 29; 2 more just touch the border (under 1% of their land)
Entirely inside: 19; 99% or more of their land
Shared with other counties: 10; Most with Dorchester County (7)
Most populated ZIP: 29464; 53,045 people · Mount Pleasant
Least populated ZIP: 29439; 1,125 people · Folly Beach; 1 more with nobody living there
Largest ZIP by land: 29458; 113 sq mi · McClellanville

Map of the ZIP codes in Charleston County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Charleston County

29 ZIP codes in Charleston County, SC, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
29401	Charleston	9,339	100%	9,339
29403	Charleston	22,533	100%	22,533
29404	North Charleston	2,334	100%	2,334
29405	North Charleston	26,254	100%	26,254
29406	North Charleston	32,001	97%	≈ 31,515
29407	Charleston	36,706	100%	36,706
29409	Charleston	2,056	100%	2,056
29412	Charleston	39,256	100%	39,256
29414	Charleston	44,727	82%	≈ 43,818
29418	North Charleston	26,052	77%	≈ 18,163
29420	North Charleston	23,959	40%	≈ 7,158
29424	Charleston	1,243	100%	1,243
29425	Charleston	0	100%	0
29426	Adams Run	1,697	83%	≈ 1,065
29429	Awendaw	4,479	100%	4,479
29438	Edisto Beach	2,826	91%	≈ 2,713
29439	Folly Beach	1,125	100%	1,125
29449	Hollywood	8,024	100%	8,024
29450	—	3,309	5.6%	≈ 109
29451	Isle of Palms	4,362	100%	4,362
29455	Charleston	27,576	100%	27,576
29456	North Charleston	41,214	46%	≈ 11,466
29458	McClellanville	2,505	100%	2,505
29464	Mount Pleasant	53,045	100%	53,045
29466	Mount Pleasant	44,942	100%	44,942
29470	Ravenel	5,639	66%	≈ 4,387
29482	Sullivan's Island	2,087	100%	2,087
29485	North Charleston	58,507	6.5%	≈ 6,724
29487	Rockville	2,703	100%	2,703

They also touch the county with under 1% of their land, so they aren’t counted: 29410 and 29483.

ZIP codes shared with other counties

These 10 ZIP codes have part of their land in another county. The first figure is the share of their land in Charleston County; then, where the rest lies.

29406 (North Charleston): 97% here; 2.9% in Berkeley County.
29414 (Charleston): 82% here; 18% in Dorchester County.
29418 (North Charleston): 77% here; 23% in Dorchester County.
29420 (North Charleston): 40% here; 60% in Dorchester County.
29426 (Adams Run): 83% here; 17% in Dorchester County.
29438 (Edisto Beach): 91% here; 9.2% in Colleton County.
29450: 5.6% here; 94% in Berkeley County.
29456 (North Charleston): 46% here; 29% in Berkeley County and 25% in Dorchester County.
29470 (Ravenel): 66% here; 34% in Dorchester County.
29485 (North Charleston): 6.5% here; 94% in Dorchester County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Charleston (9), North Charleston (7), Mount Pleasant (2), Adams Run (1), Awendaw (1), and Edisto Beach (1); 13 places in all.

All 29 start with the same three digits, 294: the prefix of the USPS sorting center that handles them.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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