Dorchester County, South Carolina
Dorchester County, South Carolina, has 178,397 residents (July 2025 estimate). Its county seat is St. George. It uses Eastern Time and covers 568 sq mi (1,472 km²) of land.
- Resident population, July 2025
- 178,397
- Land area
- 568 sq mi (1,472 km²)
- County seat or government
- St. George
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $78,198 ± $3,042
- Median home value
- $329,300 ± $5,472
- Median rent, with utilities
- $1,463 ± $48
- Homes lived in by their owners
- 75.5% ± 1.7 points
- County type
- County
- Metro or micro area
- Charleston-North Charleston, SC metro areaCentral county
- Water area
- 2.62 sq mi (6.78 km²)
- State
- South Carolina
- County code (FIPS)
- 45035
- Coordinates (central point)
- 33.082186, -80.404697
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Dorchester County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 2948359,186 people
- 2948558,507 people
- 2941444,727 people
- 2945641,214 people
- 2941826,052 people
- 2942023,959 people
- 2947212,722 people
- 294777,176 people
- 294705,639 people
- 290183,559 people
- 294322,424 people
- 294372,281 people
15 ZIP Code areas overlap Dorchester County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Dorchester County, largest first
- Dorchester School District 2150,826 people
- Dorchester School District 416,375 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Tribal areas in Dorchester County, largest first
American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- North Charleston, South Carolina (city)119,913 people
- Summerville, South Carolina (town)51,654 people
- St. George, South Carolina (town)2,154 people
- Ridgeville, South Carolina (town)1,740 people
- Lincolnville, South Carolina (town)1,064 people
- Harleyville, South Carolina (town)592 people
- Grover, South Carolina (CDP)345 people
- Reevesville, South Carolina (town)271 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Colleton County, South Carolina22 mi southwest
- Berkeley County, South Carolina27 mi east
- Charleston County, South Carolina33 mi southeast
- Orangeburg County, South Carolina34 mi northwest
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.