Williamsburg County, South Carolina

Williamsburg County population, land area and income

Williamsburg County had 29,865 residents in the Census Vintage 2024 estimate, on 934.2 square miles of land. It ranks 31st of 46 in South Carolina by population and 6th by land area. That works out to 32.0 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in South Carolina has 60,098 residents, so Williamsburg County has 50% of the typical county's population.

Its SAIPE 2023 median household income of $43,711 is in the bottom quarter among 3,143 counties with an estimate.

How Williamsburg County's population changed since 2020

Williamsburg County lost 1,056 residents between the July 2020 and July 2024 estimates, a drop of 3.4%. That ranks 43rd of 46 in South Carolina for growth. The median South Carolina county changed by +2.9%, and the state as a whole by +6.8%.

Since the April 2020 estimates base, Williamsburg County recorded 1,172 births and 2,132 deaths, a natural change of -960. Net international migration added +172 and net domestic migration, people moving to or from other US counties, came to -361. The largest single component was natural change, which removed 960 people.

Where Williamsburg County is

The Census internal point of Williamsburg County is at 33.626500, -79.716500. It sits in UTM zone 17N. The map shades South Carolina's 46 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Williamsburg County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Williamsburg County

2 incorporated places of 1,000+ people have residents in Williamsburg County, 3,099 people together, or 10% of the county. Each figure counts only the part of the town inside Williamsburg County; towns marked "part" extend into another county. The largest is Kingstree with 3,055.

Counties bordering Williamsburg County

The Census 2024 county adjacency file lists 5 neighbors for Williamsburg County. The most populous is Berkeley County, SC, with 264,276 residents. Distances run between Census internal points in a straight line.

• Berkeley County

  264,276 people

  32 mi SSW

• Florence County

  138,049 people

  28 mi N

• Georgetown County

  66,035 people

  28 mi ESE

• Clarendon County

  31,030 people

  29 mi W

• Marion County

  28,368 people

  38 mi NNE

Distance to Columbia and the nearest big city

Columbia is 80.0 miles WNW of Williamsburg County's internal point in a straight line. The nearest place of 100,000 or more is North Charleston, SC (population 126,005), 52.9 miles away. The nearest place of 10,000 or more is Moncks Corner, SC (population 18,359), 33.4 miles away.

Williamsburg County FIPS code

The FIPS code of Williamsburg County is 45089: state code 45 for South Carolina plus county code 089. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $43,711.