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CITY

Interior

South Dakota · 63 residents (2025 est.) · 1.339 sq mi
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The short version

Population has held roughly steady since 2000. Median home value has more than tripled since 2000, reaching $137,500. With a median age of 46.1, the population is older than the US median of 38.9. The poverty rate of 68.8% is well above the national figure.

At a glance
Older
median age 46.1
US median: 38.9
Less educated
25% hold a bachelor's degree
US average: 36%
Less affordable
home values up 249%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
77
Unchangedsince 2000
from 77 in 2000
1990 – 2025
Population density
58 / sq mi
Unchangedsince 2000
from 58 / sq mi in 2000
US average: 281
Median age
46.1
+17%since 2000
from 39.5 in 2000
US average: 38.9

PEP 2025 EST:63 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
183960801011990201020202024Interior
202477
1990201020202024
Section 02

Income & economy

Per capita income
$15,105
−45%since 2000
from $27,247 in 2000
US average: $44,673
Households earning $100K+
29.6%
+19.6 ptssince 2009
from 10.0% in 2009
US average: 53.3%
Poverty rate
68.8%
+60.0 ptssince 2000
from 8.8% in 2000
US average: 12.5%
Income inequality (Gini)
0.486
+66%since 2010
from 0.292 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing42.9%
US avg: 1.6%
Construction42.9%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
Wholesale trade0%
US avg: 6.9%
Retail trade0%
US avg: 9.9%
Transportation & warehousing0%
US avg: 2.2%
Information0%
US avg: 10.8%
Finance & insurance0%
US avg: 5.9%
Professional, scientific, technical0%
US avg: 5.1%
Education & health services0%
US avg: 0.9%
Arts, entertainment, food0%
US avg: 1.9%
Other services0%
US avg: 6.7%
Public administration0%
US avg: 4.8%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$137,500
+249%inflation adjusted, since 2000
from $21,600 in 2000
US average: $376,019
1990 – 2024
Owner-occupied
81.5%
−9.9 ptssince 2000
from 91.4% in 2000
18.5% rent
Vacancy rate
18.2%
−32.6 ptssince 2009
from 50.8% in 2009
US average: 10.0%
Owner cost-burdened
40.9%
−3.5 ptssince 2009
from 44.4% in 2009
US average: 22.9%
Renter cost-burdened
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 47.4%
RELATED:See current rent listings in Interior on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic61%(47)
Black0%(0)
Hispanic / Latino1.3%(1)
Asian0%(0)
Other0%
Diversity Score5.1%(4)
2024
White, non-Hispanic40.3%(31)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other59.7%(46)
Diversity Score60.1%(46)
Diversity Score
60
+1079%since 2000
from 5 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
25.0%
+10.7 ptssince 2000
from 14.3% in 2000
US average: 35.6%
High school or higher
95.5%
+4.4 ptssince 2000
from 91.1% in 2000
US average: 89.6%
Graduate degree
11.4%
+7.8 ptssince 2000
from 3.6% in 2000
US average: 14.0%
Section 06

Commute & transportation

Drive alone to work
42.9%
−4.8 ptssince 2009
from 47.6% in 2009
US average: 68.9%
Carpooled to work
0.0%
−11.9 ptssince 2009
from 11.9% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
0.0%
−33.3 ptssince 2009
from 33.3% in 2009
US average: 15.0%
Walked to work
57.1%
+50.0 ptssince 2009
from 7.1% 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
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
0.0%
Unchangedsince 2011
from 0.0% in 2011
US average: 5.2%
Labor force participation
25.9%
−42.8 ptssince 2011
from 68.8% in 2011
US average: 63.5%
Self-employed
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 13.1%
Management & professional
85.7%
+21.4 ptssince 2009
from 64.3% in 2009
US average: 42.5%
Section 08

People & community

Male
54.5%
+15.2 ptssince 2009
from 39.3% in 2009
Female
45.5%
−15.2 ptssince 2009
from 60.7% in 2009
Foreign born
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 14.1%
Veterans
14.9%
−28.0 ptssince 2009
from 42.9% in 2009
US average: 6.2%
With a disability
9.1%
−2.7 ptssince 2012
from 11.8% in 2012
US average: 13.3%
Uninsured
19.5%
−54.6 ptssince 2013
from 74.1% in 2013
US average: 8.4%
Broadband at home
40.7%
−5.5 ptssince 2017
from 46.2% in 2017
US average: 91.0%
English only at home
100.0%
Unchangedsince 2016
from 100.0% in 2016
US average: 77.7%
Spanish at home
0.0%
Unchangedsince 2016
from 0.0% in 2016
US average: 13.6%
Drill deeper

Places similar to Interior

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Alden
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Head to head

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Frequently asked

How many people live in Interior, South Dakota?

Interior, South Dakota has about 77 residents according to the 2024 American Community Survey.

Is Interior, South Dakota expensive?

In Interior, South Dakota, the median home is worth about $137,500.

How educated are people in Interior, South Dakota?

About 25.0% of adults age 25 and over in Interior, South Dakota hold a bachelor's degree or higher.

What is the poverty rate in Interior, South Dakota?

About 68.8% of people in Interior, South Dakota live below the federal poverty line.

Has Interior, South Dakota grown since 1990?

Yes, Interior, South Dakota has grown since 1990. The population has added about 33 residents, a change of about 75 percent over that period.

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

How we source and harmonize this data →