Dorchester County, South Carolina ZIP codes
10 ZIP codes are in Dorchester County, plus 7 that cross in from neighboring counties. It's part of the Charleston-North Charleston, SC metro area.
- ZIP codes
- 10
- Population in these ZIPs
- 166,963
- Avg. median income
- $79,900population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Dorchester County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 29420 | North Charleston | 23,959 | $72,661 | $336,100 |
| 29437 | Dorchester | 2,281 | $61,821 | $237,700 |
| 29447 PO Box | Grover | — | — | — |
| 29448 | Harleyville | 1,997 | $71,967 | $215,900 |
| 29471 | Reevesville | 1,135 | $38,500 | $199,900 |
| 29472 | Ridgeville | 12,722 | $75,325 | $314,100 |
| 29477 | Saint George | 7,176 | $53,894 | $203,600 |
| 29483 | Summerville | 59,186 | $85,750 | $361,800 |
| 29484 PO Box | Summerville | — | — | — |
| 29485 | Summerville | 58,507 | $82,987 | $370,300 |
ZIP codes partly in Dorchester County
These ZIP codes are mostly in a neighboring county but cover part of Dorchester County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 29018 | Bowman | Orangeburg County | 3,559 | $49,167 | $132,600 |
| 29414 | Charleston | Charleston County | 44,727 | $99,529 | $467,800 |
| 29418 | North Charleston | Charleston County | 26,052 | $64,583 | $298,200 |
| 29426 | Adams Run | Charleston County | 1,697 | $64,087 | $281,700 |
| 29432 | Branchville | Orangeburg County | 2,424 | $54,826 | $150,300 |
| 29456 | Ladson | Charleston County | 41,214 | $78,361 | $318,700 |
| 29470 | Ravenel | Charleston County | 5,639 | $86,410 | $469,000 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Dorchester County
Nearby counties
Frequently asked questions
How many ZIP codes are in Dorchester County, South Carolina?
10 ZIP codes are mainly in Dorchester County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Dorchester County?
ZIP codes in Dorchester County use the city names Dorchester, Grover, Harleyville, North Charleston, Reevesville, Ridgeville, Saint George and Summerville.
What metro area is Dorchester County in?
Dorchester County is part of the Charleston-North Charleston, SC metropolitan statistical area.