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CITY · 2000 CENSUS

Seneca

South Dakota · 58 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 $18,750. Population has fallen 28% since 1990, a loss of 23 residents. 15% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value is $18,300. With a median age of 50.0, the population is older than the US median of 35.2. Households here earn about 47% less than the South Dakota median.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 50.0
US median: 35.2
Less educated
15% hold a bachelor's degree
US average: 24%
More affordable
home values down 7%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

58
−28%since 1990
from 81 in 1990
1990 – 2025
138 / sq mi
−28%since 1990
from 193 / sq mi in 1990
US average: 242
50.0
+32%since 1990
from 37.9 in 1990
US average: 35.2
Population, 19902024
2244668901990201020202024Seneca
202422
1990201020202024
Section 02

Income & economy

$18,750
−35%inflation adjusted, since 1990
from $21,875 in 1990
US average: $42,589
1990 – 2023
$10,642
+10%since 1990
from $9,660 in 1990
US average: $21,522
20.0%
+17.5 ptssince 1990
from 2.5% in 1990
US average: 12.4%
Section 03

Housing

$18,300
−7%inflation adjusted, since 1990
from $14,999 in 1990
US average: $120,530
1990 – 2023
$0
US average: $602
96.4%
−3.6 ptssince 1990
from 100.0% in 1990
3.6% rent
1.0
+42%since 1990
from 0.7 in 1990
1990 – 2023
RELATED:See current rent listings in Seneca on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic97.5%(79)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Diversity Score6%(5)
2000
White, non-Hispanic98.3%(57)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Diversity Score0%(0)
0
−100%since 1990
from 6 in 1990
1990 – 2024
Section 05

Education

15.2%
+11.8 ptssince 1990
from 3.4% in 1990
US average: 24.4%
High school or higher
69.6%
−2.8 ptssince 1990
from 72.4% in 1990
US average: 80.3%
4.3%
+4.3 ptssince 1990
from 0.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

12.7 min
+53%since 1990
from 8.3 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 Seneca, South Dakota?

Seneca, South Dakota has about 58 residents according to the 2000 Census.

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

The typical household in Seneca, South Dakota earns about $18,750 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 $18,300, and the typical rent is about $0 a month.

How educated are people in Seneca, South Dakota?

About 15.2% 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 20.0% 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 23 residents, a change of about -28 percent over that period.

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

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