Marion County vs Williamsburg County

A side-by-side comparison of Marion County and Williamsburg County: population, income, housing, and more.

Marion County and Williamsburg County are counties in South Carolina. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Williamsburg County has the higher population (30,517 vs 28,900 in Marion County). Williamsburg County has the higher median household income ($43,471 vs $34,501 in Marion County). Williamsburg County has the higher median home value ($95,100 vs $86,800 in Marion County).

Population, income & housing

	Marion County	Williamsburg County
Population	28,900	30,517
Median age	43.0 yrs	44.0 yrs
Median household income	$34,501	$43,471
Median home value	$86,800	$95,100
Median gross rent	$663	$769
Housing units	14,418	14,837
Homeownership rate	62.2%	74.6%
Bachelor's degree or higher	13.8%	15.4%
Unemployment rate	5.9%	4.9%

Trends (ACS 5-year, 2019–2023)

	Marion County	Williamsburg County
Population	31,308 → 28,900 (-7.7%)	31,324 → 30,517 (-2.6%)
Median household income	$32,063 → $34,501 (+7.6%)	$32,485 → $43,471 (+33.8%)
Median home value	$76,700 → $86,800 (+13.2%)	$68,300 → $95,100 (+39.2%)
Median gross rent	$594 → $663 (+11.6%)	$625 → $769 (+23.0%)

Marion County

Population

31,30828,900

Median household income

$32,063$34,501

Median home value

$76,700$86,800

Median gross rent

$594$663

Williamsburg County

Population

31,32430,517

Median household income

$32,485$43,471

Median home value

$68,300$95,100

Median gross rent

$625$769

Age & race/ethnicity

Age distribution (share)

	Marion County	Williamsburg County
Under 5	5.2%	4.7%
5 to 17	17.2%	14.9%
18 to 24	7.7%	7.5%
25 to 34	10.8%	12.2%
35 to 44	12.0%	11.6%
45 to 54	12.1%	12.7%
55 to 64	13.8%	14.4%
65 to 74	13.5%	13.4%
75 and over	7.7%	8.5%

Race & ethnicity (share)

	Marion County	Williamsburg County
White (non-Hispanic)	38.4%	31.9%
Black or African American	55.7%	63.9%
American Indian & Alaska Native	0.3%	0.3%
Asian	0.1%	0.7%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.1%	0.2%
Two or more races	2.7%	0.7%
Hispanic or Latino	2.6%	2.4%

Educational attainment (age 25+)

Share of adults 25+

	Marion County	Williamsburg County
No high school diploma	16.0%	16.6%
High school graduate	48.9%	43.0%
Some college or associate's	21.4%	25.0%
Bachelor's degree	8.4%	8.8%
Graduate or professional degree	5.3%	6.6%

Commute to work

How workers get to work (share)

	Marion County	Williamsburg County
Drove alone	85.0%	83.1%
Carpooled	8.3%	8.7%
Public transit	0.0%	1.1%
Walked	1.0%	0.7%
Bicycle	0.0%	0.0%
Worked from home	4.5%	5.3%
Other means	1.2%	1.1%

Housing

Units in structure (share)

	Marion County	Williamsburg County
1-unit, detached	55.9%	50.7%
1-unit, attached	0.4%	0.3%
2 to 4 units	6.2%	4.8%
5 to 19 units	1.6%	1.8%
20 or more units	0.0%	0.2%
Mobile home & other	35.9%	42.2%

Poverty & households

	Marion County	Williamsburg County
Poverty rate	27.3%	23.6%
Average household size	2.43	2.38
Mean commute (minutes)	29	32
Median year structure built	1983	1985