United States › South Dakota › Keystone CITY · 2020 ACS
Keystone South Dakota · 240 residents · 3.00 sq mi
Time machine
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The short version
Keystone is a city of 240 people in South Dakota. At a median age of 51.0, this is an older place than the country as a whole. 18% of adults hold a bachelor's degree, below the 33% national rate. Renters pay $428 a month at the median. 75% were living in the same home a year earlier. Home values have more than tripled since 2000, reaching $151,400.
At a glance
Lower income
below the US median
US median: $66,278
Older
median age 51.0
US median: 38.8
Less educated
18% hold a bachelor's degree
US average: 33%
Less affordable
home values up 164%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 41.1 in 2000
US average: 38.8
Population, 1990 – 2024
194 269 344 419 494 1990 2000 2010 2020 2024 Keystone Age distribution, 2020
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Section 02
Income & economy $51,719
+30%inflation adjusted, since 2000
from $26,406 in 2000
US average: $66,278
from $15,828 in 2000
US average: $35,364
Households earning $100K+
from 16.2% in 2009
US average: 43.9%
from 16.9% in 2000
US average: 12.8%
Workforce by industry, 2020
Agriculture, forestry, fishing 7.5%
Professional, scientific, technical 6.8%
Transportation & warehousing 3.2%
Arts, entertainment, food 0.4%
Education & health services 0%
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$151,400
+164%inflation adjusted, since 2000
from $38,100 in 2000
US average: $265,253
$428
−42%inflation adjusted, since 2000
from $492 in 2000
US average: $1,124
from 66.4% in 2000
32.0% rent
3.22 people
+37%since 2009
from 2.35 people in 2009
US average: 2.61
from 3.7 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 93.2%(290)
Hispanic / Latino 3.5%(11)
2020
White, non-Hispanic 86.7%(208)
Hispanic / Latino 5.8%(14)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 9 more ancestry groups with data from 14.5% in 2000
US average: 32.9%
High school or higher
from 83.2% in 2000
US average: 88.5%
from 2.8% in 2000
US average: 12.7%
Section 06
Commute & transportation from 15.9 min in 2000
US average: 26.9
from 87.7% in 2009
US average: 75.1%
from 3.9% in 2009
US average: 8.4%
Section 07
Work & employment from 0.0% in 2011
US average: 5.4%
from 67.7% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 30.9% in 2009
US average: 39.3%
Section 08
People & community from 5.8% in 2009
US average: 13.5%
from 25.6% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 25.6% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
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, 2020
Gulf War (2001 or later) 32.1%(9)
Gulf War (1990s) 42.9%(12)
Share of the 28 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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Compare Keystone to nearby cities Frequently asked
How many people live in Keystone, South Dakota? Keystone, South Dakota has about 240 residents according to the 2020 American Community Survey.
What is the median household income in Keystone, South Dakota? The typical household in Keystone, South Dakota earns about $51,719 a year. Half of households make more than that, and half make less.
Is Keystone, South Dakota expensive? In Keystone, South Dakota, the median home is worth about $151,400, and the typical rent is about $428 a month.
How educated are people in Keystone, South Dakota? About 17.9% of adults age 25 and over in Keystone, South Dakota hold a bachelor's degree or higher.
What is the poverty rate in Keystone, South Dakota? About 17.5% of people in Keystone, South Dakota live below the federal poverty line.
Has Keystone, South Dakota grown since 1990? Yes, Keystone, South Dakota has grown since 1990. The population has added about 21 residents, a change of about 10 percent over that period.
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