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Summer Island Postcode
New South Wales
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Summer Island Compares
Summer Island vs the NSW average and the national average (2021 Census, population-weighted).
| Metric | Summer Island | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,100 ≈NSW | $1,931 | $1,836 |
| Rent/wk | $450 ≈NSW | $445 | $390 |
| Mortgage/month | $2,752 +NSW | $2,247 | $1,958 |
| Median age | 41 | 45.0 | 45.0 |
| SEIFA decile | 3/10 -NSW | 6.0/10 | 6.0/10 |
| Unemployment | 0.0% -NSW | 5.0% | 5.0% |
Green pill = at least 10% above the NSW average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Summer Island is a locality 360 km from Sydney in New South Wales, classified as outer regional by the ABS. The postcode is 2440. It falls within the New England and North West region. The local government area is Kempsey.
According to the 2021 Census, Summer Island has a population of 93 with a median age of 41. The median weekly household income is $2,100, close to the NSW average. The Indigenous population is 12 (12.9% of residents).
Housing in Summer Island includes a median weekly rent of $450, median monthly mortgage repayment of $2,752, with 29 total dwellings. These housing costs sit above the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 83.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Summer Island scores in decile 3 out of 10, which is below the national average.
Summer Island is part of the Armidale statistical area in New South Wales.
Summer Island Details
| Postcode | 2440 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 93 |
| Median Age | 41 years |
| Median Household Income (Census 2021) | $2,100/week |
| Median Personal Income (Census 2021) | $919/week |
| Median Weekly Rent (Census 2021) | $450 |
| Median Monthly Mortgage (Census 2021) | $2,752 |
| Average Household Size | 3.1 persons |
| Area | 13.3 km² |
| Population Density | 7/km² |
| Total Dwellings | 29 |
| Australian Citizens | 96.8% |
| Indigenous Population | 12 (12.9%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 3/10 (below average) |
| Latitude | -30.989023 |
| Longitude | 152.9617842 |
| Distance from Sydney | 360 km |
| Region (SA4) | New England and North West |
| Area (SA3) | Armidale |
| Local Government | Kempsey |
| Federal Electorate | Cowper |
Age Profile
Show counts
| 0–14 years | 19 (20.4%) |
| 15–24 years | 12 (12.9%) |
| 25–44 years | 24 (25.8%) |
| 45–64 years | 34 (36.6%) |
| 65+ years | 11 (11.8%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 3 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 13 (14.0%) |
| Diabetes | 6 (6.5%) |
| Asthma | 4 (4.3%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 3 (10.3%) |
| 2 vehicles | 8 (27.6%) |
| 3+ vehicles | 18 (62.1%) |
Suburbs Near Summer Island
Same Postcode (2440)
More Summer Island Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.