Prime Minister Sir Robert Menzies commemorated the filling of the lake. Yarralumla was expanded to include Westlake, which had up until then been part of Acton. After the Second World War, the suburb began to expand rapidly with the construction of many private homes. Yarralumla's image as a lower-class suburb would persist into the 1960s and 1970s. This general perception began to alter once Lake Burley Griffin had been created and its surrounds landscaped into parklands; the area soon gained a reputation for its attractive lakeside location. During the 1980s, house prices began to rise coincident with a rejuvenation of the suburb. Many of the original government-built monocrete, brick, and weatherboard houses have been demolished and replaced by larger dwellings of a variety of more modern styles and materials, although this process was more advanced in the central part of the suburb than in its east in 2004. Demographics The population of the Westridge area on the 1928 electoral roll numbered over 130. At the , Yarralumla had a population of 3,120 people. Of these 47.9% were male. The suburb had only 0.9% indigenous Australians, below the national average of 3.2%. The percentage of married people in the suburb was 12 points higher than the national average, and the proportion of residents who had never married was 10 points lower. The higher level of marriage did not translate into a higher level of children; 49.6% of families consisted of a couple without children in the household, compared to the national average of 38.8%. Yarralumla residents had a median age of 50, compared to a Canberra average of 35. The suburb had an older population for a city of young people; the median national age is 38 and 43.5% of Yarralumla residents were 55 or over, compared to the national figure of 29.1%. Yarralumla is a comparatively wealthy suburb with a 2021 median weekly personal income of $1,591; this compares to the figure of $1,203 for the entire Australian Capital Territory (ACT) and $805 for all of Australia. The public service or defence force employed around 20.8% of the workforce, somewhat less than the ACT average of 22.9%. This compared to 1.8% for Australia as a whole. The higher incomes were derived from the suburb's white-collar base; 68.0% of Yarralumla's workforce was employed as professionals or in managerial posts, compared to 37.7% nationally. In contrast, only 2.9% were engaged in blue-collar