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Where am ILOCATED

Barnwell County, South Carolina

Barnwell County, South Carolina, has 20,653 residents (July 2025 estimate). Its county seat is Barnwell. It uses Eastern Time and covers 548 sq mi (1,420 km²) of land.

CharlestonColumbiaNorth Charleston
Barnwell County in South Carolina
Bamberg CountyBarnwellWillistonBlackvilleHildaElko
Barnwell County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
20,653
Land area
548 sq mi (1,420 km²)
County seat or government
Barnwell
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$46,626 ± $4,377
Median home value
$106,000 ± $9,511
Median rent, with utilities
$740 ± $116
Homes lived in by their owners
70.9% ± 3.3 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Orangeburg, SC micro area and Augusta-Richmond County, GA-SC metro area
Water area
8.88 sq mi (23 km²)
State
South Carolina
County code (FIPS)
45011
Coordinates (central point)
33.260552, -81.434228
Open this point in the location finder

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 Barnwell County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-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

  1. 2981211,132 people
  2. 298535,944 people
  3. 298174,139 people
  4. 29843934 people
  5. 29836326 people
  6. 29849271 people
  7. 29826241 people

7 ZIP Code areas overlap Barnwell 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

Barnwell County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Barnwell County, largest first

  1. Barnwell County School District

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.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Barnwell, South Carolina (city)4,613 people
  2. Williston, South Carolina (town)2,870 people
  3. Blackville, South Carolina (town)1,778 people
  4. Hilda, South Carolina (town)468 people
  5. Elko, South Carolina (town)296 people
  6. Snelling, South Carolina (town)219 people
  7. Kline, South Carolina (town)154 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Allendale County, South Carolina20 mi south
  2. Bamberg County, South Carolina22 mi east
  3. Aiken County, South Carolina23 mi northwest
  4. Burke County, Georgia36 mi southwest
  5. Orangeburg County, South Carolina38 mi east

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.

See this county on Census.gov ↗

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.