Ralph, SD zip code
Ralph, South Dakota uses one zip code: 57650. Most of it is in Harding County. Together these zip codes are home to about 17 people.
Zip codes
1
Population
17
All zips combined
Largest zip
57650
17 residents
Zip codes in Ralph
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 57650 | 17 | — |