The Western Grey Kangaroo is distributed across southern Australia west of the Great Dividing Range. See the distribution map at IUCN. They are found in woodland and shrubland.

They look very similar to Eastern Grey Kangaroo and the areas of distribution of these species overlap in the Murray-Darling River.

The Western Grey has a dark brown, broader face while the Eastern Grey has a pale, almost white face. The Western Grey has a paler throat and ear edges contrasting strongly with the rest of the body while the Eastern Grey tends to be lighter and more evenly coloured.