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Gillen has 2,005 properties. Over the last 5 years, Houses in Gillen have seen a -4.43% decrease in median value, while Units have seen a 13.16% increase. As at 30 November 2025:
The size of Gillen is approximately 2.6 square kilometres. It has 13 parks covering nearly 8.0% of total area. The population of Gillen in 2016 was 4278 people. By 2021 the population was 4466 showing a population growth of 4.4% in the area during that time. The predominant age group in Gillen is 30-39 years. Households in Gillen are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Gillen work in a professional occupation.In 2021, 56.50% of the homes in Gillen were owner-occupied compared with 54.60% in 2016.
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Population 4466
0-9
16%
10-19
14%
20-29
14%
30-39
19%
40-49
14%
50-59
11%
60-69
8%
70-79
4%
80-89
1%
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Last Updated: 08/12/2025
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