Black Rock (formerly known as Dalton) is a hamlet in South Australia on the Black Rock Plains at the intersection of the south–north RM Williams Way (B80) between Jamestown and Orroroo and the west–east Wilmington–Ucolta Road (B56) to Peterborough, in the Mid North section of the state.

[5] Located 19 km south east of Orroroo, the town was originally laid out as "Dalton" and proclaimed on 15 December 1881.

[7] The railway connecting Black Rock to Orroroo and Peterborough was removed in late 2008.

However track was left in situ in the yard, and over the Black Rock Bridge, located approximately 1 km south.

Alternatively he may have named it after the English town of Dalton which translates as 'village in the dale (valley)’ or it may come from the Gaelic dall-dun – 'dark hill'.