The size of Sydney is approximately 3.0 square kilometres. It has 16 parks covering nearly 33.5% of total area. The population of Sydney in 2016 was 17252 people. By 2021 the population was 16667 showing a population decline of 3.4% in the area during that time. The predominant age group in Sydney is 20-29 years. Households in Sydney are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Sydney work in a professional occupation.In 2021, 24.20% of the homes in Sydney were owner-occupied compared with 29.10% in 2016..
Sydney has 24,391 properties. Over the last 5 years, Houses in Sydney have seen a 77.11% increase in median value, while Units have seen a 3.04% increase. As at 31 May 2025:
$3.93M
15.84%
View Trend$850/W
1.47%
$1.13M
-0.12%
View Trend$950/W
4.37%
Population 16,667
0-9
4%
10-19
3%
20-29
32%
30-39
32%
40-49
13%
50-59
8%
60-69
5%
70-79
3%
80-89
1%