Owanka is an unincorporated community in Pennington County, South Dakota, United States. Although not tracked by the United States Census Bureau, Owanka has been assigned the ZIP Code of 57767.
A post office called Owanka was first established in 1907. Owanka is a name derived from the Sioux language, meaning "good camping ground".
Now mostly a ghost town, a single family resides in Owanka. In addition to those two people, several others reside outside the town limits.
South Dakota Magazine offers a photo gallery of old Owanka buildings in this article reference: