Town · South Carolina
Williamston, South Carolina
Williamston, town, in Anderson County, South Carolina. Williamston had 4,338 residents on July 1, 2025 by the Census Bureau's estimate, up 7.1% since 2020; the 2020 Census counted 4,043 and the ACS 2020-2024 5-year estimates put it at 4,170 (±19). GEOID 4577875.
Residents, July 2025 estimate
4,338
Census Bureau estimate (no margin published)
2020 Census count: 4,043 · ACS 2020-2024: 4,170 ±19
Median household income
$64,389
±$11,973 (90% margin)
South Carolina: $69,324
Median home value
$162,800
±$11,571 (90% margin)
South Carolina: $259,000
Median gross rent
$899
±$119 (90% margin)
South Carolina: $1,180
Where is Williamston and what county is it in?
Williamston is a town in Anderson County, South Carolina. It covers 3.8 square miles of land, 1,057 residents per square mile in 2020.
Williamston is in the Greenville-Anderson-Greer, SC metropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Williamston, and is it growing?
The Census Bureau estimates that 4,338 people lived in Williamston on July 1, 2025, up 7.1% since 2020, slower than South Carolina (+8.8%). The 2020 Census counted 4,043 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 4,170 (±19).
| Measure | Williamston | Anderson County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,170 ±19 | 210,478 | no clear change |
| Households | 1,750 ±150 | 83,904 | no clear change |
| Average household size | 2.38 ±0.21 | 2.47 | no clear change |
| Housing units | 1,921 ±176 | 92,319 | −551 |
Williamston's population since 2000
From 3,791 in 2000 to 4,338 in 2025: up 14.4%. The 2000, 2010 and 2020 figures are census counts, each for Williamston as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Williamston?
The median resident of Williamston is 38.9 years old; 19.3% are under 18 and 19.0% are 65 or older. The largest group is non-Hispanic white residents at 78.1%, then non-Hispanic Black residents at 8.9%.
| Measure | Williamston | Anderson County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.9 ±2.9 | 40.6 | no clear change |
| Under 18 years | 19.3% ±4.4 pts | 22.6% | – |
| 65 years and over | 19.0% ±5.4 pts | 18.4% | – |
| Male | 41.6% ±4.7 pts | 48.4% | – |
| Hispanic or Latino (any race) | 4.7% ±5.4 pts | 5.2% | – |
| White alone, not Hispanic | 78.1% ±8.6 pts | 75.1% | no clear change |
| Black or African American alone, not Hispanic | 8.9% ±5.8 pts | 13.5% | no clear change |
| Asian alone, not Hispanic | 0.0% ±1.1 pts | 1.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.4 pts | 0.5% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 6.4% ±4.1 pts | 4.4% | – |
| Some other race alone, not Hispanic | 1.6% ±2.3 pts | 0.3% | – |
| Born outside the United States | 3.1% ±4.1 pts | 3.9% | – |
| Speak a language other than English at home (age 5+) | 3.9% ±4.1 pts | 5.0% | – |
| Civilian veterans (age 18+) | 1.3% ±1.0 pts | 7.6% | – |
| With a disability | 19.0% ±6.1 pts | 15.6% | – |
| No health insurance coverage | 18.0% ±8.3 pts | 10.2% | +11.4 pts |
| High school graduate or higher (age 25+) | 83.3% ±7.5 pts | 88.1% | – |
| Bachelor's degree or higher (age 25+) | 15.4% ±6.8 pts | 26.5% | no clear change |
| Graduate or professional degree (age 25+) | 4.2% ±2.5 pts | 9.7% | – |
| Lived in the same house a year earlier | 92.4% ±5.3 pts | 87.9% | – |
| Moved from another state in the past year | 2.1% ±3.4 pts | 3.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Williamston earn?
Half of Williamston's 1,750 households earn less than $64,389 a year (±$11,973), against $66,651 in Anderson County and $69,324 in South Carolina. In 2015-2019 it was $53,347 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.5% of residents live below the poverty line.
| Measure | Williamston | Anderson County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $64,389 ±$11,973 | $66,651 | no clear change |
| Mean household income | $69,572 ±$8,095 | $89,043 | – |
| Per capita income | $29,734 ±$2,941 | $35,910 | no clear change |
| People below the poverty line | 13.5% ±7.2 pts | 14.6% | no clear change |
| Children under 18 below the poverty line | 26.0% ±17.0 pts | 21.7% | – |
| Households receiving SNAP | 12.4% ±6.3 pts | 10.6% | – |
| Households with a computer | 95.6% ±3.5 pts | 94.4% | – |
| Households with a broadband subscription | 92.3% ±5.5 pts | 88.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Williamston?
Owners occupy 65.0% of Williamston's occupied homes and renters 35.0%. The median owner-occupied home is valued at $162,800 by its owner (±$11,571). The median renter pays $899 a month including utilities, and 28.6% of renters pay 35% or more of their income on rent.
| Measure | Williamston | Anderson County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $162,800 ±$11,571 | $231,900 | +$24,101 |
| Median gross rent | $899 ±$119 | $989 | no clear change |
| Renters paying 35% or more of income on rent | 28.6% ±13.7 pts | 38.8% | no clear change |
| Median monthly owner costs, with a mortgage | $1,151 ±$166 | $1,389 | – |
| Owner-occupied homes | 65.0% ±9.3 pts | 74.8% | no clear change |
| Renter-occupied homes | 35.0% ±9.3 pts | 25.2% | – |
| Housing units | 1,921 ±176 | 92,319 | −551 |
| Homeowner vacancy rate | 0.0% ±3.9 pts | 0.6% | – |
| Rental vacancy rate | 6.7% ±10.7 pts | 7.9% | – |
| Single-family detached homes | 78.3% ±6.3 pts | 72.4% | – |
| Mobile homes | 2.1% ±2.7 pts | 14.6% | – |
| Built 2020 or later | 1.2% ±1.5 pts | 2.6% | – |
| Built 2010 to 2019 | 3.2% ±2.4 pts | 11.1% | – |
| Built 1939 or earlier | 5.8% ±3.3 pts | 4.0% | – |
| Households with no vehicle | 5.5% ±4.3 pts | 5.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Williamston work and get to work?
78.8% of Williamston's workers drive alone. The average trip to work takes 26.6 minutes. The unemployment rate in 2020-2024 averaged 7.9%.
| Measure | Williamston | Anderson County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.1% ±8.0 pts | 59.8% | – |
| Unemployment rate | 7.9% ±4.7 pts | 5.3% | – |
| Drove alone to work | 78.8% ±9.8 pts | 80.1% | – |
| Carpooled | 15.4% ±8.1 pts | 9.9% | – |
| Public transportation | 0.0% ±2.3 pts | 0.3% | – |
| Walked | 1.7% ±2.1 pts | 0.9% | – |
| Worked from home | 4.1% ±4.1 pts | 7.6% | – |
| Mean travel time to work | 26.6 min ±2.5 | 26.5 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Williamston?
2 census tracts lie mostly in Williamston, and 1 more reaches into it (2020 census blocks). Their median household incomes run from $59,776 (Tract 104.04) to $62,778 (Tract 104.03).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 104.04Anderson County | 2,922 | $59,776 |
| Tract 104.03Anderson County | 2,809 | $62,778 |
| Tract 104.06Anderson County | 3,286 | $79,612 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Williamston) · Census block assignment files
How does Williamston compare with other places in South Carolina?
By the Census Bureau's July 2025 estimates, Williamston is the 5,303rd-most populous of the 19,476 U.S. incorporated places that have one and the 74th-most populous of 271 in South Carolina.
Williamston ranks 84th of 248 places in South Carolina with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 74th | 271 |
| Growth 2020-2025 (PEP) | 49th | 149 |
| Residents per square mile | 114th | 261 |
| Median household income | 84th | 248 |
| Per capita income | 123rd | 259 |
| Median home value | 162nd | 248 |
| Median gross rent | 146th | 235 |
| Poverty rate | 157th | 214 |
| Bachelor's degree or higher | 182nd | 226 |
| Median age | 136th | 261 |
| Owner-occupied share | 139th | 258 |
| Travel time to work | 93rd | 261 |
Williamston's figures with every place in South Carolina (CSV)
Every place in South Carolina, sortable · Compare Williamston with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Williamston?
18 of the 57 figures for Williamston on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Williamston are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Williamston.