Westlake, a residential suburb, is 14 km south-west of central Brisbane. It is reached by the Centenary Highway (1964) but postdates the 'centenary suburbs' of Jindalee and Jamboree Heights. The Westlake Lake is in the north of the suburb near the Brisbane River.
Westlake developed in conjunction with Middle Park and Riverhills, and shares the shoreline of the Pullen reach of the Brisbane River with the latter suburb. The Westlake-Riverhills Bushcare Group (c1992) is a voluntary body for preservation of river front bushland.
Westlake predates the formation of the Bushcare Group by about 20 years, and it was not until the late 1980s that housing reached the river end of the suburb, after starting near the lake.
Schools and churches are found outside Westlake. There is a neighbourhood shopping centre in Westlake Drive and larger centres in Jindalee and Riverhills.
Flooding in January 2011 behaved as could be predicted by the locations of the actual lake, the riverside reserve and the three inland linear reserves. Houses adjoining all four were also flooded.
Westlake's census populations have been: