Commonwealth is a subzone of Queenstown, located in the central-western part of Singapore.

Amenities in the area include Blessed Sacrament Church, Faith Methodist Church, Masjid Mujahidin Mosque, Queenstown Community Centre, Queenstown Lutheran Church, Ridout Tea Garden, Shuang Long Shan Wu Shu Ancestral Hall, Sri Muneeswaran Temple and Tanglin Halt Food Centre and Market.

In 1997, this town became part of the expanded Buona Vista constituency as it was part of Tanjong Pagar GRC when both GRCs merged but Clementi, West Coast, Pasir Panjang and Telok Blangah were carved out to form West Coast GRC.

In 2001, Commonwealth itself and the entire Buona Vista ward were being carved out to form Holland-Bukit Panjang GRC and subsequently Holland-Bukit Timah GRC in 2006.

[3] Since then, Buona Vista (including Commonwealth) has since returned to Tanjong Pagar GRC in 2011 and this constituency is currently helmed by the incumbent Minister for Education Chan Chun Sing.