Allendale County is a county of 7,661 people in South Carolina. Four-year degrees are less common here than nationally, at 14% of adults. That trails the South Carolina median by roughly 53%. The typical home is worth $76,200, having risen by half since 2000. The poverty rate is 28.2%, above the 12.5% national rate. The median age is 44.7, about 6 years above the US median.
At a glance
Lower income
median household income $32,328, below the US median
US median: $82,259
Older
median age 44.7
US median: 38.9
Less educated
14% hold a bachelor's degree
US average: 36%
More affordable
home values down 6%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Allendale County
What changed most since 1990
Median home value (2024 dollars)$95,763 → $76,200(−20%)US over the same years: +67%
Median age30.1 → 44.7(+14.6 years)US over the same years: +6.0 years
Population11,722 → 7,661(−35%)US over the same years: +35%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)19.5%(65)
US avg: 26.4%
Gulf War (1990s)29%(97)
US avg: 24.3%
Vietnam era15%(50)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 334 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Allendale County, decade by decade
Allendale County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
11,722
$36,032
$95,763
9.5%
56.1
2000
11,211
$38,069
$80,699
9.3%
53.3
2010
10,419
$28,888
$97,104
13.2%
50.9
2020
8,039
$31,603
$57,087
10.4%
55.6
2024
7,661
$32,328
$76,200
14.3%
62.7
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Allendale County, South Carolina?
Allendale County, South Carolina has about 7,661 residents according to the 2024 American Community Survey.
What is the median household income in Allendale County, South Carolina?
The typical household in Allendale County, South Carolina earns about $32,328 a year. Half of households make more than that, and half make less.
Is Allendale County, South Carolina expensive?
In Allendale County, South Carolina, the median home is worth about $76,200, and the typical rent is about $662 a month.
How educated are people in Allendale County, South Carolina?
About 14.3% of adults age 25 and over in Allendale County, South Carolina hold a bachelor's degree or higher.
What is the poverty rate in Allendale County, South Carolina?
About 28.2% of people in Allendale County, South Carolina live below the federal poverty line.
Has Allendale County, South Carolina grown since 1990?
Yes, Allendale County, South Carolina has shrunk since 1990. The population has lost about 4,061 residents, a change of about -35 percent over that period.
