The size of Cossack is approximately 226.7 square kilometres. It has 4 parks covering nearly 2.2% of total area. The population of Cossack in 2016 was 1223 people. By 2021 the population was 1293 showing a population growth of 5.7% in the area during that time. The predominant age group in Cossack is 50-59 years. Households in Cossack are primarily childless couples and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Cossack work in a managers occupation.In 2021, 68.60% of the homes in Cossack were owner-occupied compared with 73.20% in 2016..
Cossack has 439 properties. Over the last 5 years, Houses in Cossack have seen a 23.07% increase in median value. As at 30 June 2025:
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Population 1,293
0-9
14%
10-19
13%
20-29
11%
30-39
14%
40-49
13%
50-59
16%
60-69
12%
70-79
6%
80-89
2%
90-99
1%