County ProfileSC
Dorchester County
Population: 161,540 · 10 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
161,540
People
Median age
38
Housing
Total households
63,179
Income
Median household income
$78,198
Housing
Total housing units
67,865
Employment
Employment rate
60.5%
Education
Bachelor’s degree or higher
29.8%
Healthcare
Insured population
89.8%
County details
Local time 02:23:41(ET)| Name | Dorchester |
|---|---|
| Total ZIP codes | 10total |
| ZIP codes (by type) | 8 Standard2 PO Box |
| Area code | 843, 854 |
| Timezone | Eastern Time (ET) |
| Coordinates | 33.0821859, -80.4046966 |
| Land area | 568.4 sq miles(1,472.1 km²) |
Map of Dorchester county, South Carolina with ZIP codes
Cities and Communities in Dorchester County
Compare the largest cities in Dorchester County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Summerville | 50,915 | $81,046 | 4ZIPs |
| Dorchester | 2,389 | — | 1ZIPs |
| Saint George | 1,843 | $33,125 | 1ZIPs |
| Ridgeville | 1,672 | $55,637 | 1ZIPs |
| Harleyville | 666 | $64,844 | 1ZIPs |
| Grover | 297 | — | 1ZIPs |
| Reevesville | 201 | $77,250 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Dorchester County
Review the most populated postal areas across Dorchester County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 29485 | Summerville | $82,987 | 57,181 |
| 29483 | Summerville | $85,750 | 56,778 |
| 29486 | Summerville | $89,578 | 41,148 |
| 29472 | Ridgeville | $75,325 | 10,279 |
| 29477 | Saint George | $53,894 | 6,344 |
| 29437 | Dorchester | $61,821 | 2,389 |
| 29448 | Harleyville | $71,967 | 2,337 |
| 29471 | Reevesville | $38,500 | 1,510 |
| 29447 | Grover | — | — |
| 29484 | Summerville | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS