Wallaroo Parish, Murray County is one of the 54 parishes of Murray County, New South Wales, a cadastral unit for use on land titles. It is bounded by the Murrumbidgee River in the west, Ginninderra Creek in the south and Gooromon Ponds in the east. The Australian Capital Territory has also formed a small part of the boundary since 1909, after a small part of land in the parish at (35°11′54″S149°00′00″E) was transferred to the Commonwealth. This area is just to the west of Dunlop.