Sully County, SD
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in Sully County research summary. HomeSnacks has been researching the quality of life in Sully County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Sully County:
The population in Sully County is 1,481.
The median home value in Sully County is $273,073.
The median income in Sully County is $70,250.
The median rent in Sully County is $913.
The poverty rate in Sully County is 7.9%.
The average high in Sully County is 65.6° and there are 43.4 inches of rainfall annually.
The average high in Sully County is 65.6°.
There are 66.15 nice days each year.
Expect an average of 43.4 inches of rain each year with 10.9 inches of snow.
There is an average of 5:49 hours of sun each day in Sully County.
| Stat | Sully County |
|---|---|
| Mean High | 65.6 |
| Nice Days | 66.15 |
| Rainfall | 43.4 |
| Snowfall | 10.9 |
| Sunny Hours | 5:49 |
The current population in Sully County is 1,481. The population has decreased -2.0% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 1,279 | 0.1% |
| 2022 | 1,278 | -2.1% |
| 2021 | 1,305 | - |
Sully County is 45.0% female with 665 female residents.
Sully County is 55.0% male with 815 male residents.
| Gender | Sully County | SD | USA |
|---|---|---|---|
| Female | 45.0% | 49.3% | 50.5% |
| Male | 55.0% | 50.7% | 49.5% |
Sully County is:
92.5% White with 1,370 White residents.
5.0% African American with 74 African American residents.
0.0% American Indian with 0 American Indian residents.
0.0% Asian with 0 Asian residents.
0.0% Hawaiian with 0 Hawaiian residents.
0.5% Other with 8 Other residents.
2.0% Two Or More with 29 Two Or More residents.
0.0% Hispanic with 0 Hispanic residents.
| Race | Sully County | SD | USA |
|---|---|---|---|
| White | 92.5% | 80.3% | 58.2% |
| African American | 5.0% | 2.2% | 12.0% |
| American Indian | 0.0% | 7.4% | 0.5% |
| Asian | 0.0% | 1.4% | 5.7% |
| Hawaiian | 0.0% | 0.1% | 0.2% |
| Other | 0.5% | 0.3% | 0.5% |
| Two Or More | 2.0% | 3.9% | 3.9% |
| Hispanic | 0.0% | 4.6% | 19.0% |
2.6% of households in Sully County earn Less than $10,000.
3.8% of households in Sully County earn $10,000 to $14,999.
5.0% of households in Sully County earn $15,000 to $24,999.
6.1% of households in Sully County earn $25,000 to $34,999.
7.7% of households in Sully County earn $35,000 to $49,999.
30.1% of households in Sully County earn $50,000 to $74,999.
9.3% of households in Sully County earn $75,000 to $99,999.
17.0% of households in Sully County earn $100,000 to $149,999.
8.8% of households in Sully County earn $150,000 to $199,999.
9.6% of households in Sully County earn $200,000 or more.
| Income | Sully County | SD | USA |
|---|---|---|---|
| Less than $10,000 | 2.6% | 4.0% | 4.9% |
| $10,000 to $14,999 | 3.8% | 3.4% | 3.6% |
| $15,000 to $24,999 | 5.0% | 7.1% | 6.6% |
| $25,000 to $34,999 | 6.1% | 7.5% | 6.8% |
| $35,000 to $49,999 | 7.7% | 11.9% | 10.4% |
| $50,000 to $74,999 | 30.1% | 17.8% | 15.7% |
| $75,000 to $99,999 | 9.3% | 14.6% | 12.7% |
| $100,000 to $149,999 | 17.0% | 18.2% | 17.4% |
| $150,000 to $199,999 | 8.8% | 8.1% | 9.3% |
| $200,000 or more | 9.6% | 7.4% | 12.6% |
-0.0% of adults in Sully County completed < 9th grade.
4.0% of adults in Sully County completed 9-12th grade.
39.0% of adults in Sully County completed high school / ged.
20.0% of adults in Sully County completed some college.
16.0% of adults in Sully County completed associate's degree.
18.0% of adults in Sully County completed bachelor's degree.
3.0% of adults in Sully County completed master's degree.
0.0% of adults in Sully County completed professional degree.
0.0% of adults in Sully County completed doctorate degree.
| Education | Sully County | SD | USA |
|---|---|---|---|
| < 9th Grade | 0% | 3% | 5% |
| 9-12th Grade | 4% | 4% | 6% |
| High School / GED | 39% | 28% | 26% |
| Some College | 20% | 20% | 19% |
| Associate's Degree | 16% | 12% | 9% |
| Bachelor's Degree | 18% | 22% | 21% |
| Master's Degree | 3% | 7% | 10% |
| Professional Degree | 0% | 2% | 2% |
| Doctorate Degree | 0% | 1% | 2% |
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