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CITY · 2020 ACS

Sinai

South Dakota · 99 residents · 0.368 sq mi
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The short version

Sinai has notably lower household income than the US average, with a median household income of $36,989. Population has fallen 26% since 2000, a loss of 34 residents. Median home value has more than doubled since 2000, reaching $64,400. With a median age of 47.3, the population is older than the US median of 38.8. Poverty is rare here, at 4.2% of residents. Households here earn about 38% less than the South Dakota median.

At a glance
Lower income
below the US median
US median: $66,278
Older
median age 47.3
US median: 38.8
Average education
35% hold a bachelor's degree
US average: 33%
Less affordable
home values up 33%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

99
−26%since 2000
from 133 in 2000
1990 – 2025
269 / sq mi
−26%since 2000
from 361 / sq mi in 2000
US average: 280
47.3
+33%since 2000
from 35.6 in 2000
US average: 38.8
Population, 19902024
751141541942331990201020202024Sinai
2024215
1990201020202024
Section 02

Income & economy

$36,989
−35%inflation adjusted, since 2000
from $38,000 in 2000
US average: $66,278
1990 – 2024
$21,209
+22%since 2000
from $17,451 in 2000
US average: $35,364
Households earning $100K+
26.9%
+9.1 ptssince 2009
from 17.7% in 2009
US average: 43.9%
4.2%
−1.5 ptssince 2000
from 5.7% in 2000
US average: 12.8%
Workforce by industry, 2020
Retail trade56.3%
US avg: 10%
Agriculture, forestry, fishing16.3%
US avg: 1.7%
Construction16.3%
US avg: 1.2%
Wholesale trade5%
US avg: 6.7%
Information2.5%
US avg: 11.1%
Finance & insurance1.3%
US avg: 5.5%
Professional, scientific, technical1.3%
US avg: 4.7%
Manufacturing0%
US avg: 0.5%
Transportation & warehousing0%
US avg: 2.5%
Education & health services0%
US avg: 0.8%
Arts, entertainment, food0%
US avg: 2%
Other services0%
US avg: 6.6%
Public administration0%
US avg: 4.7%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

$64,400
+33%inflation adjusted, since 2000
from $32,100 in 2000
US average: $265,253
1990 – 2024
82.2%
+2.6 ptssince 2000
from 79.6% in 2000
17.8% rent
1.7
+106%since 2000
from 0.8 in 2000
1990 – 2024
RELATED:See current rent listings in Sinai on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic100%(133)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
Other0%
Diversity Score0%(0)
2020
White, non-Hispanic94.9%(94)
Black0%(0)
Hispanic / Latino2%(2)
Asian0%(0)
Other0%(0)
Diversity Score5.1%(5)
5
from 0 in 2000
1990 – 2024
Section 05

Education

34.7%
+25.1 ptssince 2000
from 9.6% in 2000
US average: 32.9%
High school or higher
98.7%
+14.6 ptssince 2000
from 84.0% in 2000
US average: 88.5%
2.7%
+0.5 ptssince 2000
from 2.1% in 2000
US average: 12.7%
Section 06

Commute & transportation

25.4 min
+99%since 2000
from 12.8 min in 2000
US average: 26.9
100.0%
+17.9 ptssince 2009
from 82.1% in 2009
US average: 75.1%
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 8.4%
Section 07

Work & employment

0.0%
−2.3 ptssince 2011
from 2.3% in 2011
US average: 5.4%
80.0%
+14.1 ptssince 2011
from 65.9% in 2011
US average: 63.4%
22.5%
−25.7 ptssince 2009
from 48.2% in 2009
US average: 39.3%
Section 08

People & community

46.4%
−3.9 ptssince 2009
from 50.3% in 2009
53.6%
+3.9 ptssince 2009
from 49.7% in 2009
0.6%
+0.6 ptssince 2009
from 0.0% in 2009
US average: 13.5%
7.8%
−70.1 ptssince 2013
from 77.9% in 2013
US average: 8.8%
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Frequently asked

How many people live in Sinai, South Dakota?

Sinai, South Dakota has about 99 residents according to the 2020 American Community Survey.

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

The typical household in Sinai, South Dakota earns about $36,989 a year. Half of households make more than that, and half make less.

Is Sinai, South Dakota expensive?

In Sinai, South Dakota, the median home is worth about $64,400.

How educated are people in Sinai, South Dakota?

About 34.7% of adults age 25 and over in Sinai, South Dakota hold a bachelor's degree or higher.

What is the poverty rate in Sinai, South Dakota?

About 4.2% of people in Sinai, South Dakota live below the federal poverty line.

Has Sinai, South Dakota grown since 1990?

Yes, Sinai, South Dakota has shrunk since 1990. The population has lost about 18 residents, a change of about -15 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 →