Williamstown is a small South Australian town on the southern fringe of the Barossa Valley wine-growing region. It is 51 km north east of Adelaide and 16 km south-east of Gawler. Williamstown was originally known as Victoria Creek. The township was laid out in 1858 by Lewis Johnston, or Johnstone, on land he purchased in 1857, and named for his son.
Population: 2,755 (2016 census)
Established: 1857 (private sub-division) · 15 March 2003 (locality)
Postcode(s): 5351
Elevation: 310 m (1,017 ft)
Location: 39 km (24 mi) NE of Adelaide · 15 km (9 mi) SE of Gawler · 25 km (16 mi) SW of Nuriootpa