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
Williamsburg County is a county in South Carolina with a population of 30,517. It ranks #31 among counties in South Carolina by population. The median age is 44.0, older than the national median. The population is 48.6% male and 51.4% female.
The median household income in Williamsburg County is $43,471, below the US median of $74,580. 17.3% of residents live below the federal poverty level. Home values sit at a median of $95,100, with monthly rent averaging $769. The homeownership rate of 74.6% is higher than the national rate of 64.8%.
Educational attainment in Williamsburg County reflects 15.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 5.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 31.7 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.
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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.