Williamsburg County, South Carolina Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 31st-largest in South Carolina
The population of Williamsburg County, South Carolina is 30,517 as of the 2023 American Community Survey, making it the 31st-largest county in South Carolina. The median household income is $43,471, the median home value is $95,100, and the median age is 44.0.
The population of Williamsburg County has declined 13.0% since 2010 (34,342 → 29,865), a -0.99% annualized rate.
30,517
Population
-0.99%
Annual growth
33
People / sq mi
$43,471
Median Income
$95,100
Median Home Value
Williamsburg County covers 934 sq mi of land at 32.7 people per square mile.
About Williamsburg County, SC
Housing cost is the defining feature of Williamsburg County: the median home is valued at $95,100. Williamsburg County is a county in South Carolina with a population of 30,517. It ranks #31 among counties in South Carolina by population.
Household earnings sit near the bottom of the range at $43,471, below the US median of $78,538. Poverty sits at 17.3%, above the national 12.4%. Housing costs are among the lowest of comparable places: a median home value of $95,100, with typical rent around $769.
Degree attainment is on the lower side for US counties: 15.4% of adults hold a bachelor’s degree, below the national 35.0%. Most workers commute: only 5.3% work from home, below the national 14.0%, and the average commute runs about 32 minutes each way.
Williamsburg County Population History (2010-2024)
The county of Williamsburg County had a population of 34,342 in 2010 and 29,865 in 2024, a -13.0% growth over 14 years. The peak was 34,342 in 2010. Average annual growth rate: -0.99%.
29,865
Population (2024)
34,342
Population (2010)
34,342
Peak (2010)
-0.99%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 34,342 |
| 2011 | 34,101 |
| 2012 | 33,554 |
| 2013 | 33,069 |
| 2014 | 32,728 |
| 2015 | 32,515 |
| 2016 | 31,876 |
| 2017 | 31,185 |
| 2018 | 30,907 |
| 2019 | 30,256 |
| 2020 | 30,921 |
| 2021 | 30,432 |
| 2022 | 30,164 |
| 2023 | 30,028 |
| 2024 | 29,865 |
Race & Ethnicity
| White | 32.7% |
| Black or African American | 64.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Age & Sex
44.0
Median Age
51.4%
Female
48.6%
Male
22.0%
Age 65+
Age Distribution
Children (under 15): 15.7% · Seniors (65+): 22.0%
Income & Poverty
| Median household income | $43,471$-23,347 vs state |
| Mean household income | $57,757 |
| Per-capita income | $24,533 |
| Poverty rate | 17.3%+7.2% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 47.1% |
Top Industries by Employment
The largest employment sector in Williamsburg County is professional & business services, accounting for 24.0% of workers.
How residents commute
1.1%
Drive alone
0.7%
Carpool
83.1%
Public transit
5.3%
Work from home
31.7 min
Avg commute
Housing
$95,100$-141,600 vs state
Median home value
$769
Median rent
74.6%
Homeownership rate
14,837
Total housing units
82.0%
Occupied
18.0%
Vacant
25.4%
Renter-occupied
Social & access
89.2%
With health insurance
82.8%
With broadband internet
15.5%
Foreign-born
5.6%
Veterans (18+)
20.5%
With a disability
97.1%
Speak language other than English at home
Education
83.4%
High School+
15.4%
Bachelor's+
Largest cities in South Carolina
Other counties in South Carolina
Part of South Carolina
Metro areas in South Carolina
County rankings
Frequently Asked Questions
Williamsburg County, South Carolina has a population of 30,517 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 31st-largest county in South Carolina. Population density is 33 people per square mile.
The population of Williamsburg County has declined 13.0% since 2010 (34,342 → 29,865), a -0.99% annualized rate.
The median household income in Williamsburg County, South Carolina is $43,471, with mean (average) household income of $57,757 and per-capita income of $24,533. 17.3% of residents live below the federal poverty level.
In Williamsburg County, the largest racial and ethnic groups are Black or African American (64.0%), White (32.7%), Hispanic or Latino (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Williamsburg County, South Carolina is 44.0 years. Residents are 51.4% female and 48.6% male.
The median home value in Williamsburg County is $95,100 and median monthly rent is $769. 74.6% of occupied housing units are owner-occupied. The county has 14,837 total housing units, 18.0% of which are vacant.
The largest employment sector in Williamsburg County, South Carolina is professional, scientific, and management services, employing 24.0% of workers. The unemployment rate is 2.5%.
Charleston is among the largest cities associated with Williamsburg County, South Carolina, with a population of 152,014.
More from South Carolina
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Full rankings of South Carolina counties
Statewide data for South Carolina
Population, race, income, age, and trends across South Carolina
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.