The locality is about 15 kilometres (9.3 mi) north of the town of Rosny Park.

The 2016 census recorded a population of 105 for the state suburb of Grasstree Hill.

Grasstree Hill (the landform feature) is believed to have been named for the dwarf grass trees that grew on it.

Shelstone was the name of the original town reserve but it was never made official.

[3] Route C324 (Grasstree Hill Road) passes through from south to north.