Ralph is a city in South Dakota. So far we have accumulated 0 streets in Ralph and on these streets we have added 0 real estate properties.
- Federal District
- South Dakota
Ralph is an unincorporated community in Harding County, South Dakota, United States. Although not tracked by the Census Bureau, Ralph has been assigned the ZIP code of 57650. The community was named for James Ralph Howard, the original owner of the town site.