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CITY

Keystone

South Dakota · 268 residents (2025 est.) · 3.002 sq mi
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The short version

Keystone has lower-than-average household income, with a median household income of $64,702. Population has held roughly steady since 2000. 13% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than tripled since 2000, reaching $263,900.

At a glance
Lower income
below the US median
US median: $82,259
Mid-age
median age 38.1
US median: 38.9
Less educated
13% hold a bachelor's degree
US average: 36%
Less affordable
home values up 280%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
336
+8%since 2000
from 311 in 2000
1990 – 2025
Population density
112 / sq mi
+8%since 2000
from 104 / sq mi in 2000
US average: 281
Median age
38.1
−7%since 2000
from 41.1 in 2000
US average: 38.9

PEP 2025 EST:268 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
1942693444194941990201020202024Keystone
2024336
1990201020202024
Section 02

Income & economy

Median household income
$64,702
+35%inflation adjusted, since 2000
from $26,406 in 2000
US average: $82,259
1990 – 2024
Per capita income
$32,157
+103%since 2000
from $15,828 in 2000
US average: $44,673
Households earning $100K+
42.1%
+25.8 ptssince 2009
from 16.2% in 2009
US average: 53.3%
Poverty rate
6.8%
−10.0 ptssince 2000
from 16.9% in 2000
US average: 12.5%
Income inequality (Gini)
0.392
+26%since 2010
from 0.311 in 2010
US average: 0.476
Workforce by industry, 2024
Information14%
US avg: 10.8%
Agriculture, forestry, fishing12.4%
US avg: 1.6%
Construction12.4%
US avg: 1.2%
Finance & insurance11.8%
US avg: 5.9%
Professional, scientific, technical10.7%
US avg: 5.1%
Wholesale trade6.7%
US avg: 6.9%
Transportation & warehousing2.2%
US avg: 2.2%
Education & health services1.1%
US avg: 0.9%
Arts, entertainment, food0.6%
US avg: 1.9%
Manufacturing0%
US avg: 0.4%
Retail trade0%
US avg: 9.9%
Other services0%
US avg: 6.7%
Public administration0%
US avg: 4.8%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$263,900
+280%inflation adjusted, since 2000
from $38,100 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$546
−39%inflation adjusted, since 2000
from $492 in 2000
US average: $1,442
Owner-occupied
70.1%
+3.6 ptssince 2000
from 66.4% in 2000
29.9% rent
Vacancy rate
53.9%
+15.2 ptssince 2009
from 38.6% in 2009
US average: 10.0%
Owner cost-burdened
10.7%
−28.2 ptssince 2009
from 38.9% in 2009
US average: 22.9%
Renter cost-burdened
21.9%
−20.3 ptssince 2009
from 42.2% in 2009
US average: 47.4%
Afford Score
4.1
+183%since 2000
from 1.4 in 2000
1990 – 2024
Gentrification Score
71
RELATED:See current rent listings in Keystone on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic93.2%(290)
Black0%(0)
Hispanic / Latino3.5%(11)
Asian0%(0)
Other0%
Diversity Score8.8%(27)
2024
White, non-Hispanic63.7%(214)
Black0%(0)
Hispanic / Latino23.8%(80)
Asian0.6%(2)
Other11.9%(40)
Diversity Score65.4%(220)
Diversity Score
65
+643%since 2000
from 9 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
13.5%
−1.0 ptssince 2000
from 14.5% in 2000
US average: 35.6%
High school or higher
84.7%
+1.5 ptssince 2000
from 83.2% in 2000
US average: 89.6%
Graduate degree
5.1%
+2.3 ptssince 2000
from 2.8% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
32.6 min
+106%since 2000
from 15.9 min in 2000
US average: 26.5
Drive alone to work
66.3%
−21.4 ptssince 2009
from 87.7% in 2009
US average: 68.9%
Carpooled to work
6.2%
+3.4 ptssince 2009
from 2.7% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
3.9%
−3.6 ptssince 2009
from 7.5% in 2009
US average: 15.0%
Walked to work
19.7%
+17.6 ptssince 2009
from 2.1% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
1.9%
−2.0 ptssince 2009
from 3.9% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
7.8%
+7.8 ptssince 2011
from 0.0% in 2011
US average: 5.2%
Labor force participation
79.4%
+11.8 ptssince 2011
from 67.7% in 2011
US average: 63.5%
Self-employed
7.9%
+3.5 ptssince 2009
from 4.4% in 2009
US average: 13.1%
Management & professional
20.8%
−44.7 ptssince 2009
from 65.4% in 2009
US average: 42.5%
Section 08

People & community

Male
56.0%
+12.9 ptssince 2009
from 43.1% in 2009
Female
44.0%
−12.9 ptssince 2009
from 56.9% in 2009
Foreign born
9.5%
+3.7 ptssince 2009
from 5.8% in 2009
US average: 14.1%
Veterans
10.1%
−33.2 ptssince 2009
from 43.2% in 2009
US average: 6.2%
With a disability
8.9%
−4.6 ptssince 2012
from 13.5% in 2012
US average: 13.3%
Uninsured
29.2%
−45.2 ptssince 2013
from 74.4% in 2013
US average: 8.4%
Broadband at home
88.8%
+23.3 ptssince 2017
from 65.5% in 2017
US average: 91.0%
English only at home
73.5%
−20.7 ptssince 2016
from 94.2% in 2016
US average: 77.7%
Spanish at home
24.9%
+21.7 ptssince 2016
from 3.2% in 2016
US average: 13.6%
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Frequently asked

How many people live in Keystone, South Dakota?

Keystone, South Dakota has about 336 residents according to the 2024 American Community Survey.

What is the median household income in Keystone, South Dakota?

The typical household in Keystone, South Dakota earns about $64,702 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 $263,900, and the typical rent is about $546 a month.

How educated are people in Keystone, South Dakota?

About 13.5% 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 6.8% 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 117 residents, a change of about 53 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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