United States › South Dakota › Clay County COUNTY · 1990 CENSUS
Clay County South Dakota · 13,186 residents · 412 sq mi
Time machine
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The short version
Clay County is home to 13,186 people in South Dakota. The median age is 24.0, younger than the US median of 33.0. 36% of adults hold a bachelor's degree, against 20% nationally. 24.6% of residents live below the federal poverty line. 53% of homes are owner-occupied. Median home value sits at $47,800.
At a glance
Lower income
below the US median
US median: $30,130
Younger
median age 24.0
US median: 33.0
More educated
36% hold a bachelor's degree
US average: 20%
More affordable
home values down 15%, inflation adjusted
US median home: $93,722
Section 01
Population & growth vs 24.9 in 2000
US average: 33.0
Population, 1990 – 2024
13K 14K 14K 15K 15K 1990 2000 2010 2020 2024 Clay County Age distribution, 1990
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $19,392
−7%inflation adjusted, since 2000
vs $27,535 in 2000
US average: $30,130
vs $14,452 in 2000
US average: $14,340
vs 21.2% in 2000
US average: 13.2%
$47,800
−15%inflation adjusted, since 2000
vs $73,700 in 2000
US average: $93,722
$291
−13%inflation adjusted, since 2000
vs $440 in 2000
US average: $450
vs 54.4% in 2000
47.1% rent
Section 04
Race & ethnicity 2000
White, non-Hispanic 92.3%(12,498)
Hispanic / Latino 0.9%(120)
1990
White, non-Hispanic 95.2%(12,547)
Hispanic / Latino 0.8%(111)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Ancestry
+ 21 more ancestry groups with data vs 38.7% in 2000
US average: 20.3%
High school or higher
vs 89.5% in 2000
US average: 75.2%
vs 17.4% in 2000
US average: 7.1%
Section 06
Commute & transportation vs 13.6 min in 2000
US average: 21.9
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
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.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to Clay County Head to head
Compare Clay County to nearby counties CLAY COUNTY VS
Union County
Income $89,636 +362%
Home value $301,100 +530%
Population 17,402 +16%
SEE FULL COMPARISON →
CLAY COUNTY VS
Yankton County
Income $72,821 +276%
Home value $225,900 +373%
Population 23,635 +57%
SEE FULL COMPARISON →
CLAY COUNTY VS
Cedar County
Income $73,578 +279%
Home value $185,000 +287%
Population 8,373 −44%
SEE FULL COMPARISON →
CLAY COUNTY VS
Lincoln County
Income $99,166 +411%
Home value $348,300 +629%
Population 77,145 +413%
SEE FULL COMPARISON →
Frequently asked
How many people live in Clay County, South Dakota? Clay County, South Dakota has about 13,186 residents according to the 1990 Census.
What is the median household income in Clay County, South Dakota? The typical household in Clay County, South Dakota earns about $19,392 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 $47,800, and the typical rent is about $291 a month.
How educated are people in Clay County, South Dakota? About 36.3% 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 24.6% of people in Clay County, South Dakota live below the federal poverty line.
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