Wantirna South
| Wantirna South Melbourne, Victoria | |||||||||||||||
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| Coordinates | 37°52′52″S 145°13′26″E / 37.881°S 145.224°E | ||||||||||||||
| Population | 20,754 (2021 census) | ||||||||||||||
| • Density | 1,549/km2 (4,011/sq mi) | ||||||||||||||
| Postcode(s) | 3152 | ||||||||||||||
| Area | 13.4 km2 (5.2 sq mi) | ||||||||||||||
| Location | |||||||||||||||
| LGA(s) | City of Knox | ||||||||||||||
| State electorate(s) | |||||||||||||||
| Federal division(s) | Aston | ||||||||||||||
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Wantirna South is a suburb in Melbourne, Victoria, Australia, 25 km east of Melbourne's Central Business District, located within the City of Knox local government area. Wantirna South recorded a population of 20,754 at the 2021 census. 5 Wantirna South is a border suburb to City of Whitehorse and City of Monash.