The size of Strathdale is approximately 3.6 square kilometres. It has 1 park covering nearly 5.5% of total area. The population of Strathdale in 2011 was 5,694 people. By 2016 the population was 5,682 showing a population decline of 0.2% in the area during that time. The predominant age group in Strathdale is 60-69 years. Households in Strathdale are primarily childless couples and are likely to be repaying $1000 - $1399 per month on mortgage repayments. In general, people in Strathdale work in a professional occupation. In 2011, 72.5% of the homes in Strathdale were owner-occupied compared with 70.7% in 2016. Currently the median sales price of houses in the area is $580,000.