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CITY · 2020 ACS

Seneca

South Dakota · 22 residents · 0.419 sq mi
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The short version

Seneca has notably lower household income than the US average, with a median household income of $43,438. Population has fallen 62% since 2000, a loss of 36 residents. Median home value has more than doubled since 2000, reaching $38,100. With a median age of 66.0, the population is older than the US median of 38.8. Poverty is rare here, at 5.1% of residents. Households here earn about 27% less than the South Dakota median.

At a glance
Lower income
below the US median
US median: $66,278
Older
median age 66.0
US median: 38.8
Average education
30% hold a bachelor's degree
US average: 33%
Less affordable
home values up 39%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

22
−62%since 2000
from 58 in 2000
1990 – 2025
53 / sq mi
−62%since 2000
from 138 / sq mi in 2000
US average: 280
66.0
+32%since 2000
from 50.0 in 2000
US average: 38.8
Population, 19902024
2244668901990201020202024Seneca
202422
1990201020202024
Section 02

Income & economy

$43,438
+54%inflation adjusted, since 2000
from $18,750 in 2000
US average: $66,278
1990 – 2023
$31,118
+192%since 2000
from $10,642 in 2000
US average: $35,364
Households earning $100K+
33.3%
+2.9 ptssince 2009
from 30.4% in 2009
US average: 43.9%
5.1%
−14.9 ptssince 2000
from 20.0% in 2000
US average: 12.8%
Workforce by industry, 2020
Wholesale trade19%
US avg: 6.7%
Other services19%
US avg: 6.6%
Public administration19%
US avg: 4.7%
Agriculture, forestry, fishing9.5%
US avg: 1.7%
Construction9.5%
US avg: 1.2%
Information4.8%
US avg: 11.1%
Finance & insurance4.8%
US avg: 5.5%
Professional, scientific, technical4.8%
US avg: 4.7%
Manufacturing0%
US avg: 0.5%
Retail trade0%
US avg: 10%
Transportation & warehousing0%
US avg: 2.5%
Education & health services0%
US avg: 0.8%
Arts, entertainment, food0%
US avg: 2%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

$38,100
+39%inflation adjusted, since 2000
from $18,300 in 2000
US average: $265,253
1990 – 2023
100.0%
+3.6 ptssince 2000
from 96.4% in 2000
0.0% rent
0.9
−10%since 2000
from 1.0 in 2000
1990 – 2023
RELATED:See current rent listings in Seneca on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98.3%(57)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%
Diversity Score0%(0)
2020
White, non-Hispanic90.9%(20)
Black0%(0)
Hispanic / Latino9.1%(2)
Asian0%(0)
Other0%(0)
Diversity Score20.7%(5)
21
from 0 in 2000
1990 – 2024
Section 05

Education

29.7%
+14.5 ptssince 2000
from 15.2% in 2000
US average: 32.9%
High school or higher
100.0%
+30.4 ptssince 2000
from 69.6% in 2000
US average: 88.5%
8.1%
+3.8 ptssince 2000
from 4.3% in 2000
US average: 12.7%
Section 06

Commute & transportation

16.7 min
+31%since 2000
from 12.7 min in 2000
US average: 26.9
95.2%
+6.0 ptssince 2009
from 89.3% in 2009
US average: 75.1%
9.5%
+9.5 ptssince 2009
from 0.0% in 2009
US average: 8.4%
Section 07

Work & employment

0.0%
−14.6 ptssince 2011
from 14.6% in 2011
US average: 5.4%
53.8%
−30.4 ptssince 2011
from 84.2% in 2011
US average: 63.4%
9.5%
−38.9 ptssince 2009
from 48.4% in 2009
US average: 39.3%
Section 08

People & community

59.0%
+9.0 ptssince 2009
from 50.0% in 2009
41.0%
−9.0 ptssince 2009
from 50.0% in 2009
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 13.5%
0.0%
−95.2 ptssince 2013
from 95.2% in 2013
US average: 8.8%
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Frequently asked

How many people live in Seneca, South Dakota?

Seneca, South Dakota has about 22 residents according to the 2020 American Community Survey.

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

The typical household in Seneca, South Dakota earns about $43,438 a year. Half of households make more than that, and half make less.

Is Seneca, South Dakota expensive?

In Seneca, South Dakota, the median home is worth about $38,100.

How educated are people in Seneca, South Dakota?

About 29.7% of adults age 25 and over in Seneca, South Dakota hold a bachelor's degree or higher.

What is the poverty rate in Seneca, South Dakota?

About 5.1% of people in Seneca, South Dakota live below the federal poverty line.

Has Seneca, South Dakota grown since 1990?

Yes, Seneca, South Dakota has shrunk since 1990. The population has lost about 59 residents, a change of about -73 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 →