| ZIP Codes: | 12 ZIP Codes (9 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 843 / 854 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:39 PM |
| Population: | 38,438 [See All] |
| FIPS: | 45029 |
| Land Area: | 1,066 sq mi |
| Water Area: | 49 sq mi |
| Coordinates: | 32.8903, -80.6711 |
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38,438 residents live across 12 ZIPs covering 1,066 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 38,590 to 38,438 from 2014 to 2024 — a -0.4% change. 6 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 29452 (Jacksonboro, $113,164 median) and poorest ZIP 29475 (Ruffin, $39,769) are 23.9 miles apart — a 2.8× income gap across local geography.
Median home values vary 9.5× across this county — from $67,700 in 29446 (Green Pond) to $642,400 in 29438 (Edisto Island).
Density varies 19× across the county — from 5 people/sq mi in 29446 (Green Pond) to 96 in 29488 (Walterboro).
Educational attainment ranges from 9.7% bachelor's+ in 29435 (Cottageville) to 53.1% in 29438 (Edisto Island) — the breadth of educational profiles across the area.
Within South Carolina, this is the #27 most populous of 46 counties and ranks #24 for median household income .
Weighted by population, the typical household earns about $53,379 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.3% of adults age 25+ hold a bachelor's degree or higher (5,272 of 27,362 reporting).
9 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 29488 | Walterboro | Standard | 22,538 | $49,876 | 234.5 | 1.1% |
| 29435 | Cottageville | Standard | 4,304 | $58,813 | 64.6 | 22.7% |
| 29438 | Edisto Island | Standard | 2,826 | $86,979 | 95.4 | 19.1% |
| 29475 | Ruffin | Standard | 2,286 | $39,769 | 102.3 | -19.6% |
| 29481 | Smoaks | Standard | 1,759 | $46,719 | 88.2 | -12.5% |
| 29474 | Round O | Standard | 1,420 | $40,781 | 109.6 | -45.3% |
| 29929 | Islandton | Standard | 1,276 | $58,267 | 77.7 | 11.8% |
| 29446 | Green Pond | Standard | 1,184 | — | 228.4 | 32.3% |
| 29082 | Lodge | Standard | 371 | $42,833 | 39.6 | -13.7% |
| 29452 | Jacksonboro | PO Box | 318 | $113,164 | 25.1 | -17.0% |
| 29493 | Williams | PO Box | 156 | — | 0.9 | 43.1% |
| 29433 | Canadys | PO Box | — | — | 0.0 | — |