Wallaroo | |||||||||||||
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1874 boundaries of Wallaroo Town shown on an excerpt of an 1888 map of the hundred | |||||||||||||
| Coordinates: 33°59′42″S 138°39′07″E / 33.995°S 138.652°E | |||||||||||||
| Country | Australia | ||||||||||||
| State | South Australia | ||||||||||||
| Region | Yorke Peninsula | ||||||||||||
| LGA | |||||||||||||
| Established | 12 June 1862 | ||||||||||||
| Area | |||||||||||||
• Total | 320 km2 (124 sq mi) | ||||||||||||
| County | Daly | ||||||||||||
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The Hundred of Wallaroo is a cadastral unit of hundred located on the Copper Coast of South Australia. It is one of the 16 hundreds of the County of Daly. It was named in 1862 by Governor Dominick Daly after the indigenous term wadla warru presumed to mean wallaby urine.

The most densely populated town and localities of the Copper Coast council are situated inside (or largely inside) the bounds of the Hundred of Wallaroo:
Derivation of Name: Corruption of Abna wadla warru; Other Details: Area 124 square miles. Wadla warru means wallaby's urine twisted to wallawaroo then to wallaroo.