Williamston, SC

Town in Anderson County, SC, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

4,170

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

38.9

years ∙ half population younger than 38.9, half older

Diversity Index

37.6%

chance two random people differ in race and ethnicity

Nativity

3.1%

foreign-born population

96.9%Native

3.1% Foreign-born

Geographic Context

Location, size, and surroundings

About

Williamston is a town within Anderson County, South Carolina, United States.

Location

Town in Anderson County, SC, US

Co-ordinates

DEC34.619088° N, 82.480391° W

DMS34° 37′ 08.72″ N, 82° 28′ 49.41″ W

Population Density & area

1,089/sq mi (420.8/km²)

Total Area

3.87 sq mi (10 km²)

Land Area

3.83 sq mi (9.91 km²) · 99.07%

Water Area

0.04 sq mi (0.09 km²) · 0.93%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

41.6% male

Male 41.6%

Female 58.4%

males per 100 females

Williamston 71.3

Anderson County 93.7

South Carolina 94.8

Nativity

3.1%

foreign-born population

96.9%Native

3.1% Foreign-born

% Foreign-born

Williamston 3.1%

Anderson County 3.9%

South Carolina 5.8%

Age Distribution

How the population is spread across age groups

Median Age

38.9

years ∙ half population younger than 38.9, half older

Williamston

38.9

Anderson County

40.6

South Carolina

40.2

Dependency ratio

dependents per 100 working-age adults

Williamston 62

Anderson County 69.6

South Carolina 67.5

AGE DISTRIBUTION

Distribution of age group

Median age

	Williamston	Anderson County	South Carolina
Age Group
Children (Under 18)	19.3%	22.6%	21.4%
Working age (18-64)	61.7%	59%	59.7%
Senior (65+)	19%	18.4%	18.9%
Dependency ratio
Total dependency ratio	62	69.6	67.5
Child dependency ratio	31.2	38.3	35.9
Old-age dependency ratio	30.8	31.3	31.6

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

78.1%

Black

8.9%

Asian

Hispanic

4.7%

Other

8.3%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

37.6%

chance two random people differ in race and ethnicity

Williamston 37.6%

Anderson County 41.3%

South Carolina 54.9%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Williamston population

	Williamston	Anderson County	South Carolina
Hispanic or Latino	4.7%	5.2%	7.4%
Mexican	0%	1.9%	3.4%
Puerto Rican	0.7%	0.6%	1%
Cuban	0.1%	0.1%	0.3%
Other Hispanic / Latino	3.9%	2.5%	2.7%
Not Hispanic or Latino	95.3%	94.8%	92.6%
One race	88.9%	90.4%	88.9%
White	78.1%	75.1%	61.9%
Black or African American	8.9%	13.5%	24.6%
American Indian and Alaska Native	0.2%	0.5%	0.2%
Asian	0%	1%	1.7%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	1.6%	0.3%	0.5%
Two or more races (Multiracial)	6.4%	4.4%	3.7%

Household & Families Composition

Household size, type, and family structure

Household structure

71.6% family

Family 71.6%

Non family 28.4%

% family households

Williamston 71.6%

Anderson County 67.6%

South Carolina 65%

Average household size

2.38

persons per household

Williamston

2.38

Anderson County

2.47

South Carolina

2.44

Household & Family COMPOSITION

Households

Percentage of Williamston population

	Williamston	Anderson County	South Carolina
Total households	1,750	83,904	2,117,989
Average houshold size	2.38	2.47	2.44
Family households	1,253	56,748	1,377,369
Average family size	2.84	3.02	3.01
Married couple family	792	41,817	998,170
Other families	461	14,931	379,199
Male householder	116	3,585	95,077
Female householder	345	11,346	284,122
Non-family households	497	27,156	740,620
One-person households	481	23,589	618,603
Male householder	158	11,683	273,409
Senior (65+) living alone	70	3,674	86,486
Female householder	323	11,906	345,194
Senior (65+) living alone	180	6,559	172,484
Other living arrangements	16	3,567	122,017

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

1,921

housing units

Williamston 1,921

Anderson County 92,319

South Carolina 2,443,039

Occupancy status

91.1% occupied

Occupied 91.1%

Vacant 8.9%

vacancy rate

Williamston 8.9%

Anderson County 9.1%

South Carolina 13.3%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

80.2%

Single family houses

80.2%

Apartments in multi-unit structures

17.7%

Mobile homes

2.1%

Boat, RV, van, etc

Median Year Built

1968

Half of houses were built before 1968, and half after.

Historic ∙ 1939 or earlier

5.8%

Postwar & mid-century ∙ 1940 - 1969

43.9%

Late 20th century ∙ 1970 - 1999

32.4%

Modern ∙ 2000 or later

17.8%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Williamston	Anderson County	South Carolina
Rooms per unit
Median rooms	5.4	5.9	5.7
1–3 rooms	8.9%	6.9%	9.1%
4–6 rooms	62.7%	54.9%	55.3%
7+ rooms	28.4%	38.2%	35.5%
Bedrooms
No bedroom / studio	0%	1.4%	1.5%
1 bedroom	5.8%	4%	5.7%
2 bedrooms	41%	23.3%	22.5%
3 bedrooms	42.3%	50.7%	47.5%
4+ bedrooms	10.9%	20.7%	22.8%
At a glance
Median year built	1968	1988	1993
Total housing units	1,921	92,319	2,443,039

Occupancy Profile

Who is inside and how they use it

Homeownership

65% owners

Renter-occupied 35%

Owner-occupied 65%

homeownership rate

Williamston 65%

Anderson County 74.8%

South Carolina 71.9%

Average household size

2.4

Owner-occupied

2.35

Renter-occupied

owner-occupied average size

Williamston 2.4

Anderson County 2.54

South Carolina 2.49

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Williamston	Anderson County	South Carolina
Total occupied units	1,750	83,904	2,117,989
Year moved in
2020 or later	24.4%	23.1%	25.6%
2010 to 2019	39.5%	38.1%	39.4%
2000 to 2009	9.3%	16.3%	16%
1999 or earlier	26.8%	22.5%	19%
Occupants per room
1.00 or fewer	98.3%	98.1%	98%
1.01 to 1.50	1.7%	1.3%	1.4%
1.51 or more	0%	0.6%	0.6%
Vehicles availability
No vehicles	5.5%	5.7%	5.7%
1 vehicle	28.3%	28.8%	32.2%
2 vehicles	33.5%	37.4%	38.5%
3 or more vehicles	32.7%	28.1%	23.6%
House heating fuel used
Gas	32.5%	33.2%	27.1%
Electricity	66.1%	64.4%	70.8%
Solar	1%	0.2%	0.2%
Fuel oil, kerosene etc	0%	0.5%	0.5%
All other fuels	0%	1%	0.6%
No fuel used	0.5%	0.8%	0.7%
Selected characteristics
Lacking complete plumbing	0%	0.5%	0.3%
Lacking complete kitchen	0%	0.9%	0.6%
No telephone service available	3%	0.6%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$162,800

owner-occupied units

Median value(USD)

Williamston

$162,800

Anderson County

$231,900

South Carolina

$259,000

Housing Cost Burden

28.4%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

28.4%

Owners without a mortgage

5.8%

Renters

42.6%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Williamston	Anderson County	South Carolina
Property value
Median Value	$162,800	$231,900	$259,000
Under $100,000	30.4%	18.6%	16.8%
$100,000 - $200,000	30.7%	22.3%	19.5%
$200,000 - $300,000	27.4%	26.5%	21.8%
$300,000 - $500,000	8.3%	22.4%	25.5%
$500,000 - $1,000,000	3.3%	8.6%	12.7%
$1,000,000 and more	0%	1.6%	3.7%
Owner-occupied households
With a mortgage	42.7%	54.7%	57.1%
Without a mortgage	57.3%	45.3%	42.9%
Median monthly owner costs
With a mortgage	$1,151	$1,389	$1,529
Without a mortgage	$355	$401	$448
Gross rent
Median rent	$899	$989	$1,180

Education Profile

How educated is the community and how education pays off

Adults with a college degree

15.4%

of adults 25+ with a bachelor's degree or higher

Williamston 15.4%

Anderson County 26.5%

South Carolina 32.1%

Adults without a high school diploma

16.8%

of adults (25+) without a high school diploma

Williamston 16.8%

Anderson County 11.9%

South Carolina 9.9%

School Enrollment

Who is enrolled in school and at what level

School enrollment

820

population (age 3+) enrolled in school

Nursery / Preschool

3.3%

K–12

72.2%

College / Undergraduate

22.3%

Graduate / Professional

2.2%

College-going rate (18-24 yr olds)

29.1%

of 18-24-year-olds in college or graduate school

Williamston

29.1%

Anderson County

36.9%

South Carolina

37.5%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Williamston	Anderson County	South Carolina
Total enrolled (age 3+)	820	48,408	1,202,992
Nursery / preschool	3.3%	4.3%	5.2%
K–12	72.2%	73.8%	69.7%
Kindergarten	4.3%	7.2%	5.5%
Elementary: Grades 1–4	13.2%	23.1%	20.6%
Elementary: Grades 5–8	23.9%	20.1%	21.4%
High School: Grades 9–12	30.9%	23.3%	22.2%
College or graduate school	24.5%	21.9%	25.1%
College, undergraduate	22.3%	18.2%	20%
Graduate, professional school	2.2%	3.7%	5%
College-going rate · 18-24 yr olds	29.1%	36.9%	37.5%
School type
Public school	88.2%	79.8%	82.7%
Private school	11.8%	20.2%	17.3%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

3,075

population 25 years and over

Total adults (25+)

Less than 9th grade

4.3%

9th-12th, no diploma

12.5%

HS graduate

33%

Some college no degree

24.1%

Associates degree

10.7%

Bachelors degree

11.2%

Graduate or professional degree

4.2%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

60.3% · 39.7%

9th-12th, no diploma

62% · 38%

HS graduate

46.8% · 53.2%

Some college no degree

39.5% · 60.5%

Associates degree

21.9% · 78.1%

Bachelors degree

56.1% · 43.9%

Graduate or professional degree

10% · 90%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Williamston	Anderson County	South Carolina
Population (25+)	3,075	145,156	3,677,078
Less than 9th grade	4.3%	3.3%	3.1%
9th–12th, no diploma	12.5%	8.6%	6.8%
High school diploma or GED	33%	30.1%	28.2%
Some college, no degree	24.1%	20.3%	19.8%
Associate's degree	10.7%	11.2%	10%
Bachelor's degree or higher	15.4%	26.5%	32.1%
Bachelor's degree	11.2%	16.8%	19.8%
Graduate or professional	4.2%	9.7%	12.3%
High School or higher	83.3%	88.1%	90.1%

Earnings by education level

percentage as applicable

Median Earnings

$40,625

Median earnings for adults 25+, by level

Less than HS graduate

$31,884

HS graduate

$34,980

Some college or associates

$44,387

Bachelors degree

$78,708

Graduate or professional degree

$—

Poverty Rate

for ages 25+, with bachelors degree or higher

Less than HS graduate

25.2%

HS graduate

16.8%

Some college or associates

2.9%

Bachelors degree or higher

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Williamston	Anderson County	South Carolina
Median earnings
Population 25+, with earnings	$40,625	$46,420	$47,658
Less than high school graduate	$31,884	$30,639	$30,223
High school graduate (includes equivalency)	$34,980	$36,191	$37,196
Some college or associate's degree	$44,387	$45,079	$44,160
Bachelor's degree	$78,708	$62,631	$61,860
Graduate or professional degree	$—	$77,141	$73,671
Poverty rates
Less than high school graduate	25.2%	28.5%	28.4%
High school graduate (includes equivalency)	16.8%	15.6%	15.6%
Some college or associate's degree	2.9%	9.7%	10.2%
Bachelor's degree or higher	0%	3.2%	4.7%

Insights for Williamston, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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