Summer Island Suburb ProfileNew South Wales 2440
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Summer Island has 36 properties. Over the last 5 years, Houses in Summer Island have seen a 46.05% increase in median value. As at 31 December 2025:
- The median value for Houses in Summer Island is $810,905 while the median value for Units is $245,710.
The size of Summer Island is approximately 13.3 square kilometres. It has 1 park covering nearly 1.8% of total area. The population of Summer Island in 2016 was 101 people. By 2021 the population was 93 showing a population decline of 7.9% in the area during that time. The predominant age group in Summer Island is 50-59 years. Households in Summer Island are primarily couples with children and are likely to be repaying $1800 - $2399 per month on mortgage repayments. In general, people in Summer Island work in a managers occupation.In 2021, 86.20% of the homes in Summer Island were owner-occupied compared with 83.40% in 2016.
Market Insights
Summer Island Trends for Houses
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Summer Island Trends for Units
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Neighbourhood Insights
Age
Population 93
0-9
8%
10-19
22%
20-29
9%
30-39
7%
40-49
15%
50-59
23%
60-69
15%
70-79
12%
Household Structure
Occupancy
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Last Updated: 15/01/2026
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