United States › South Dakota › Clay County COUNTY · 2010 ACS
Clay County South Dakota · 13,864 residents · 412 sq mi
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The short version
With 13,864 people, Clay County is a county in South Dakota. The median age is 25.0, younger than the US median of 37.2. 40% of adults hold a bachelor's degree, against 28% nationally. Owners hold 53% of the housing stock. 24.0% of residents live below the federal poverty line. Home values have risen by half since 2000, reaching $116,900.
At a glance
Lower income
below the US median
US median: $52,703
Younger
median age 25.0
US median: 37.2
More educated
40% hold a bachelor's degree
US average: 28%
Less affordable
home values up 25%, inflation adjusted
US median home: $225,659
Section 01
Population & growth from 24.9 in 2000
US average: 37.2
Population, 1990 – 2024
13K 14K 14K 15K 15K 1990 2000 2010 2020 2024 Clay County Age distribution, 2010
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Section 02
Income & economy $37,198
+7%inflation adjusted, since 2000
from $27,535 in 2000
US average: $52,703
from $14,452 in 2000
US average: $27,286
Households earning $100K+
from 17.5% in 2009
US average: 33.3%
from 21.2% in 2000
US average: 13.8%
Workforce by industry, 2010
Agriculture, forestry, fishing 4.7%
Public administration 3.1%
Professional, scientific, technical 2.5%
Arts, entertainment, food 1.8%
Transportation & warehousing 1.1%
Education & health services 0.5%
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$116,900
+25%inflation adjusted, since 2000
from $73,700 in 2000
US average: $225,659
$574
+3%inflation adjusted, since 2000
from $440 in 2000
US average: $853
from 54.4% in 2000
47.0% rent
from 7.9% in 2009
US average: 12.1%
2.23 people
+14%since 2009
from 1.96 people in 2009
US average: 2.60
from 21.5% in 2009
US average: 30.9%
from 55.2% in 2009
US average: 46.8%
from 3.4 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 92.3%(12,498)
Hispanic / Latino 0.9%(120)
2010
White, non-Hispanic 90%(12,484)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 24 more ancestry groups with data from 38.7% in 2000
US average: 27.9%
High school or higher
from 89.5% in 2000
US average: 84.9%
from 17.4% in 2000
US average: 10.2%
Section 06
Commute & transportation from 13.6 min in 2000
US average: 25.2
from 65.1% in 2009
US average: 76.2%
from 12.7% in 2009
US average: 10.4%
from 0.0% in 2009
US average: 4.7%
from 4.0% in 2009
US average: 4.1%
from 14.7% in 2009
US average: 2.8%
from 2.8% in 2009
US average: 0.5%
from 3.5% in 2009
US average: 8.7%
Section 07
Work & employment from 23.6% in 2009
US average: 12.9%
from 43.3% in 2009
US average: 35.2%
Section 08
People & community from 2.9% in 2009
US average: 12.8%
from 7.8% in 2009
US average: 9.9%
Marital status (2024)
Men 15+
Never married 56.1%(3,667)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 9.8% in 2013
US average: 8.4%
from 62.4% in 2020
US average: 54.8%
Direct-purchase
from 19.6% in 2020
US average: 13.8%
from 13.1% in 2020
US average: 18.4%
from 12.2% in 2020
US average: 20.9%
VA health care
from 3.2% in 2020
US average: 2.2%
Any private
from 80.8% in 2020
US average: 67.1%
Any public
from 23.9% in 2020
US average: 36.7%
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) 29.8%(189)
Gulf War (1990s) 23.7%(150)
Share of the 634 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.
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Drill deeper
Places similar to Clay County Head to head
Compare Clay County to nearby counties CLAY COUNTY VS
Union County
Income $89,636 +141%
Home value $301,100 +158%
Population 17,402 +16%
SEE FULL COMPARISON →
CLAY COUNTY VS
Yankton County
Income $72,821 +96%
Home value $225,900 +93%
Population 23,635 +57%
SEE FULL COMPARISON →
CLAY COUNTY VS
Cedar County
Income $73,578 +98%
Home value $185,000 +58%
Population 8,373 −44%
SEE FULL COMPARISON →
CLAY COUNTY VS
Lincoln County
Income $99,166 +167%
Home value $348,300 +198%
Population 77,145 +413%
SEE FULL COMPARISON →
Frequently asked
How many people live in Clay County, South Dakota? Clay County, South Dakota has about 13,864 residents according to the 2010 American Community Survey.
What is the median household income in Clay County, South Dakota? The typical household in Clay County, South Dakota earns about $37,198 a year. Half of households make more than that, and half make less.
Is Clay County, South Dakota expensive? In Clay County, South Dakota, the median home is worth about $116,900, and the typical rent is about $574 a month.
How educated are people in Clay County, South Dakota? About 40.4% of adults age 25 and over in Clay County, South Dakota hold a bachelor's degree or higher.
What is the poverty rate in Clay County, South Dakota? About 24.0% of people in Clay County, South Dakota live below the federal poverty line.
Has Clay County, South Dakota grown since 1990? Yes, Clay County, South Dakota has grown since 1990. The population has added about 678 residents, a change of about 5 percent over that period.
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