The size of Slacks Creek is approximately 8.5 square kilometres. It has 24 parks covering nearly 16.8% of total area. The population of Slacks Creek in 2011 was 10,435 people. By 2016 the population was 10,423 showing a population decline of 0.1% in the area during that time. The predominant age group in Slacks Creek is 0-9 years. Households in Slacks Creek are primarily couples with children and are likely to be repaying $1400 - $1799 per month on mortgage repayments. In general, people in Slacks Creek work in a labourer occupation. In 2011, 54.7% of the homes in Slacks Creek were owner-occupied compared with 53.8% in 2016.
Slacks Creek has 4,871 properties. Over the last 5 years, Houses in Slacks Creek have seen a 123.94% increase in median value, while Units have seen a 132.36% increase. As at 30 April 2025:
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Population 10,423
0-9
16%
10-19
14%
20-29
14%
30-39
14%
40-49
12%
50-59
11%
60-69
10%
70-79
5%
80-89
2%
90-99
1%