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COUNTY

Sully County

South Dakota · 1,479 residents (2025 est.) · 1,006.727 sq mi
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Notable rankings
#6Lowest unemploymentof 3,1440.0%#140Lowest poverty rateof 3,1446.3%
The short version

Sully County has lower-than-average household income, with a median household income of $72,578. Population has held roughly steady since 2000. Median home value has more than tripled since 2000, reaching $205,400. With a median age of 46.9, the population is older than the US median of 38.9. It sits in the top 10% of US counties for household income.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 46.9
US median: 38.9
Less educated
24% hold a bachelor's degree
US average: 36%
Less affordable
home values up 108%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
1,526
−2%since 2000
from 1,556 in 2000
1990 – 2025
Population density
2 / sq mi
+12%since 2009
from 1 / sq mi in 2009
US average: 281
Median age
46.9
+17%since 2000
from 40.0 in 2000
US average: 38.9

PEP 2025 EST:1,479 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
1K1K1K2K2K1990201020202024Sully County
20242K
1990201020202024
Age distribution, 2024
Under 53.7%(57)
US avg: 5.6%
5 to 96%(92)
US avg: 6%
10 to 146.6%(101)
US avg: 6.4%
15 to 197.3%(112)
US avg: 6.6%
20 to 244.9%(75)
US avg: 6.5%
25 to 3410.2%(155)
US avg: 13.7%
35 to 447.4%(113)
US avg: 13.2%
45 to 5414.2%(217)
US avg: 12.2%
55 to 6416.4%(251)
US avg: 12.7%
65 to 7414.4%(220)
US avg: 10.2%
75 to 847.5%(115)
US avg: 5.1%
85 and over1.2%(18)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$72,578
+23%inflation adjusted, since 2000
from $32,500 in 2000
US average: $82,259
1990 – 2024
Per capita income
$46,134
+165%since 2000
from $17,407 in 2000
US average: $44,673
Households earning $100K+
47.6%
+26.1 ptssince 2009
from 21.5% in 2009
US average: 53.3%
Poverty rate
6.3%
−5.7 ptssince 2000
from 12.1% in 2000
US average: 12.5%
Income inequality (Gini)
0.447
+10%since 2010
from 0.406 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing27.9%
US avg: 1.6%
Construction27.9%
US avg: 1.2%
Information8.3%
US avg: 10.8%
Wholesale trade6.9%
US avg: 6.9%
Retail trade4.3%
US avg: 9.9%
Other services3.6%
US avg: 6.7%
Public administration3.6%
US avg: 4.8%
Finance & insurance3.5%
US avg: 5.9%
Transportation & warehousing2.9%
US avg: 2.2%
Education & health services2.4%
US avg: 0.9%
Professional, scientific, technical1%
US avg: 5.1%
Arts, entertainment, food0.8%
US avg: 1.9%
Manufacturing0%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$205,400
+108%inflation adjusted, since 2000
from $54,200 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$842
+35%inflation adjusted, since 2000
from $343 in 2000
US average: $1,442
Owner-occupied
72.8%
−3.0 ptssince 2000
from 75.9% in 2000
27.2% rent
Vacancy rate
31.8%
+3.4 ptssince 2009
from 28.3% in 2009
US average: 10.0%
Owner cost-burdened
12.7%
−3.4 ptssince 2009
from 16.1% in 2009
US average: 22.9%
Renter cost-burdened
17.3%
−8.9 ptssince 2009
from 26.2% in 2009
US average: 47.4%
Afford Score
2.8
+79%since 2009
from 1.6 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
45
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Sully County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic97.4%(1,516)
Black0%(0)
Hispanic / Latino0.8%(12)
Asian0.1%(2)
Other0%
2024
White, non-Hispanic86.5%(1,320)
Black4.5%(69)
Hispanic / Latino0%(0)
Asian0%(0)
Other9%(137)
Diversity Score
30
+270%since 2009
from 8 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Ancestry
German27.5%(420)
English14.6%(223)
Irish9.4%(143)
Norwegian7.3%(111)
American5%(77)
Danish1.8%(27)
Polish1.6%(24)
French1.3%(20)
Swedish1.2%(18)
Czech1.1%(17)
Scottish0.9%(14)
+ 8 more ancestry groups with data
Portuguese0.7%(10)
Italian0.5%(8)
Lithuanian0.3%(4)
Ukrainian0.3%(4)
Austrian0.2%(3)
Belgian0.2%(3)
Dutch0.2%(3)
Swiss0.2%(3)
RANKED:Largest German population · Largest English population · Largest Irish population · Largest Norwegian population · Largest American population
Section 05

Education

Bachelor's degree or higher
24.1%
+7.6 ptssince 2000
from 16.4% in 2000
US average: 35.6%
High school or higher
96.1%
+11.3 ptssince 2000
from 84.9% in 2000
US average: 89.6%
Graduate degree
5.5%
+2.1 ptssince 2000
from 3.4% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
19.3 min
+47%since 2000
from 13.1 min in 2000
US average: 26.5
Drive alone to work
69.2%
+4.9 ptssince 2009
from 64.3% in 2009
US average: 68.9%
Carpooled to work
12.2%
+2.2 ptssince 2009
from 10.0% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
13.4%
+0.8 ptssince 2009
from 12.5% in 2009
US average: 15.0%
Walked to work
3.2%
−9.4 ptssince 2009
from 12.7% 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
2.4%
−2.7 ptssince 2009
from 5.1% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
0.0%
−1.9 ptssince 2011
from 1.9% in 2011
US average: 5.2%
Labor force participation
69.3%
−5.3 ptssince 2011
from 74.6% in 2011
US average: 63.5%
Self-employed
15.2%
−2.4 ptssince 2009
from 17.6% in 2009
US average: 13.1%
Management & professional
50.3%
−17.8 ptssince 2009
from 68.2% in 2009
US average: 42.5%
Section 08

People & community

Male
55.2%
+3.3 ptssince 2009
from 51.9% in 2009
Female
44.8%
−3.3 ptssince 2009
from 48.1% in 2009
Foreign born
4.8%
+3.8 ptssince 2009
from 1.0% in 2009
US average: 14.1%
Veterans
3.4%
−50.0 ptssince 2009
from 53.4% in 2009
US average: 6.2%
With a disability
10.1%
−1.0 ptssince 2012
from 11.1% in 2012
US average: 13.3%
Uninsured
6.6%
−85.1 ptssince 2013
from 91.7% in 2013
US average: 8.4%
Broadband at home
79.6%
+3.6 ptssince 2017
from 76.0% in 2017
US average: 91.0%
English only at home
94.3%
−4.3 ptssince 2016
from 98.7% in 2016
US average: 77.7%
Spanish at home
0.7%
+0.5 ptssince 2016
from 0.1% in 2016
US average: 13.6%
Marital status
Men 15+
Never married30.4%(211)
Married56.1%(390)
Widowed4%(28)
Divorced9.5%(66)
Women 15+
Never married22.9%(133)
Married59.4%(345)
Widowed7.9%(46)
Divorced9.8%(57)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

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Places similar to Sully County
Head to head

Compare Sully County to nearby counties

SULLY COUNTY VS
Potter County
Income$72,045−1%
Home value$121,300−41%
Population2,377+61%
SEE FULL COMPARISON →
SULLY COUNTY VS
Hughes County
Income$81,395+12%
Home value$242,000+18%
Population17,570+1088%
SEE FULL COMPARISON →
SULLY COUNTY VS
Hyde County
Income$73,472+1%
Home value$181,600−12%
Population1,191−19%
SEE FULL COMPARISON →
SULLY COUNTY VS
Stanley County
Income$87,712+21%
Home value$203,500−1%
Population3,018+104%
SEE FULL COMPARISON →
Frequently asked

How many people live in Sully County, South Dakota?

Sully County, South Dakota has about 1,526 residents according to the 2024 American Community Survey.

What is the median household income in Sully County, South Dakota?

The typical household in Sully County, South Dakota earns about $72,578 a year. Half of households make more than that, and half make less.

Is Sully County, South Dakota expensive?

In Sully County, South Dakota, the median home is worth about $205,400, and the typical rent is about $842 a month.

How educated are people in Sully County, South Dakota?

About 24.1% of adults age 25 and over in Sully County, South Dakota hold a bachelor's degree or higher.

What is the poverty rate in Sully County, South Dakota?

About 6.3% of people in Sully County, South Dakota live below the federal poverty line.

Has Sully County, South Dakota grown since 1990?

Yes, Sully County, South Dakota has shrunk since 1990. The population has lost about 63 residents, a change of about -4 percent over that period.

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Explore from here

1 census tract
Census Tract 9791
2 ZIP codes
ZIP 57564ZIP 57520
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

Sully County, South Dakota: demographics, income & housing data · CensusEasy