County

Sully County, SD

2 ZIP codes  ·  2 cities  ·  South Dakota

👥1,020Population
💰$68,616Median HH Income▼ 10% below avg
🎂53.5Median Age
🏠$188,479Median Home Value▼ 32% below avg
🎓42.5%College Grads▲ 10% above avg
People & Population (ACS 2023 — weighted avg)
♂ Male 51.3% Female 48.7% ♀

Race & Ethnicity

White: 95.6%Black: 1.8%Other: 2.8%Race
White95.6%
Black1.8%
Other2.8%

Age Breakdown

Under 5
6%
5–17
18%
18–24
3%
25–44
17%
45–64
30%
65+
12%

Key Indicators

Median Age53.5 yrs
Avg HH Size2.28
Below Poverty9.8% ≈ Avg
College Grads42.5% ▲ 10% above avg
HS Graduate242 (33.8%)
Some College77 (10.8%)
Associates86 (12%)
Bachelors139 (19.4%)
Graduate Degree172 (24%)

Education

HS Grad: 33.8%Some College: 10.8%Associates: 12%Bachelors: 19.4%Graduate: 24%Edu
HS Grad33.8%
Some College10.8%
Associates12.0%
Bachelors19.4%
Graduate24.0%
Housing & Income

Housing Tenure

Owner: 83.3%Renter: 16.7%Tenure
Owner83.3%
Renter16.7%

Home Value Distribution

Under $50k
15%
$50k–$100k
6%
$100k–$150k
22%
$150k–$200k
12%
$200k–$300k
20%
$300k–$500k
20%
Over $500k
5%

Financials

Median HH Income$68,616 ▼ 10% below avg
Median Home Value$188,479 ▼ 32% below avg
Home/Income Ratio2.7x (nat avg ~3.5x)
Median Rent$945/mo
Total Housing Units620
Vacant Units164

Income Distribution

Under $25k
16%
$25k–$50k
15%
$50k–$75k
28%
$75k–$100k
9%
$100k–$150k
18%
$150k–$200k
7%
Over $200k
7%
Employment & Commute

How People Get to Work

Drove Alone
85%
Walked
4%
Work From Home
11%

Commute Time

Under 15 min
59%
15–30 min
18%
30–45 min
19%
Over 45 min
5%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
15%
1960s–1970s
12%
1980s–1990s
10%
2000+
61%
About Sully County, SD

Sully County is located in South Dakota and encompasses 2 ZIP codes spanning 2 cities and communities. The county has an estimated population of 1,020 residents. With a median age of 53.51, it is a mature county.

Sully County has a solidly middle-class economic profile. The median household income of $68,616 is near the national average. The poverty rate of 9.8% is near the national average.

Housing in Sully County is an affordable housing market, with a median home value of $188,479 — below the national average. Monthly median rent is approximately $944. Homeownership rates are high at 83.3%, reflecting a largely residential, stable population.

The residents of Sully County are primarily White (95.59%). Educational attainment is well-educated — 42.5% of adults hold a bachelor's degree or higher, near the national average.

Sully County, SD is a solidly middle-class area in South Dakota. The 2 ZIP codes within the county each have their own character — browse the full list below to find the right community, whether you're looking for affordable housing, strong schools, or economic opportunity.

ZIP Codes in Sully County
ZIPCityPopulationMedian IncomeMedian HomeMedian RentUnemp.College
57520 Agar 127 $46,875 $113,800 $850 0.0% 60.8%
57564 Onida 893 $71,708 $199,100 $958 0.0% 39.9%

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Cities in Sully County