| County Name | Sully County |
| FIPS Code | 46119 |
| Population | 1373 |
| Unemployment Rate | 1.4% |
| Time Zone: | Central Standard Time |
| List of Counties that Border Sully County, South Dakota |
|---|
| Dewey, SD |
| Hughes, SD |
| Hyde, SD |
| Potter, SD |
| Stanley, SD |
| Sully, SD |
| List of Cities/Towns in Sully County, South Dakota |
|---|
| Agar, SD |
| Agar (town), SD |
| Cow Creek, SD |
| East Sully, SD |
| Onida, SD |
| West Sully, SD |