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CITY · 2000 CENSUS

Keystone

South Dakota · 311 residents · 3.002 sq mi
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The short version

Keystone has notably lower household income than the US average, with a median household income of $26,406. Population has grown 42% since 1990. 14% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value is $38,100. With a median age of 41.1, the population is older than the US median of 35.2. Households here earn about 25% less than the South Dakota median.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 41.1
US median: 35.2
Less educated
14% hold a bachelor's degree
US average: 24%
More affordable
home values down 12%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

311
+42%since 1990
from 219 in 1990
1990 – 2025
104 / sq mi
+42%since 1990
from 73 / sq mi in 1990
US average: 242
41.1
+4%since 1990
from 39.4 in 1990
US average: 35.2
Population, 19902024
1942693444194941990201020202024Keystone
2024336
1990201020202024
Section 02

Income & economy

$26,406
−6%inflation adjusted, since 1990
from $21,250 in 1990
US average: $42,589
1990 – 2024
$15,828
+68%since 1990
from $9,394 in 1990
US average: $21,522
16.9%
−2.5 ptssince 1990
from 19.4% in 1990
US average: 12.4%
Section 03

Housing

$38,100
−12%inflation adjusted, since 1990
from $32,900 in 1990
US average: $120,530
1990 – 2024
$492
+28%inflation adjusted, since 1990
from $292 in 1990
US average: $602
66.4%
−15.5 ptssince 1990
from 81.9% in 1990
33.6% rent
1.4
−7%since 1990
from 1.5 in 1990
1990 – 2024
RELATED:See current rent listings in Keystone on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic100%(219)
Black0%(0)
Hispanic / Latino1.8%(4)
Asian0%(0)
Diversity Score4.4%(10)
2000
White, non-Hispanic93.2%(290)
Black0%(0)
Hispanic / Latino3.5%(11)
Asian0%(0)
Diversity Score8.8%(27)
9
+100%since 1990
from 4 in 1990
1990 – 2024
Section 05

Education

14.5%
−7.6 ptssince 1990
from 22.1% in 1990
US average: 24.4%
High school or higher
83.2%
+0.7 ptssince 1990
from 82.5% in 1990
US average: 80.3%
2.8%
−3.0 ptssince 1990
from 5.8% in 1990
US average: 8.8%
Section 06

Commute & transportation

15.9 min
−54%since 1990
from 34.7 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Keystone, South Dakota?

Keystone, South Dakota has about 311 residents according to the 2000 Census.

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

The typical household in Keystone, South Dakota earns about $26,406 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 $38,100, and the typical rent is about $492 a month.

How educated are people in Keystone, South Dakota?

About 14.5% 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 16.9% 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 92 residents, a change of about 42 percent over that period.

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

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