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Diamond Head Postcode
Queensland
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Diamond Head Compares
Diamond Head vs the QLD average and the national average (2021 Census, population-weighted).
| Metric | Diamond Head | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $225 -QLD | $1,770 | $1,836 |
| Mortgage/month | $1,859 ≈QLD | $1,774 | $1,958 |
| Median age | 52 | 44.0 | 45.0 |
Green pill = at least 10% above the QLD average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Diamond Head is a coastal suburb of Brisbane in Queensland, with postcode 4551. It sits about 471 km from the Brisbane CBD, within the Port Macquarie-Hastings local government area. The suburb footprint covers roughly 28.7 square kilometres.
According to the 2021 Census, Diamond Head has a population of 7 with a median age of 52. The median weekly household income is $225, below the QLD average.
Housing in Diamond Head includes a median monthly mortgage repayment of $1,859, 3 total dwellings. Housing costs in the area sit below the QLD average.
Diamond Head is part of the Caloundra statistical area in Queensland.
Diamond Head Details
| Postcode | 4551 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 7 |
| Median Age | 52 years |
| Median Household Income (Census 2021) | $225/week |
| Median Personal Income (Census 2021) | $350/week |
| Median Monthly Mortgage (Census 2021) | $1,859 |
| Average Household Size | 1.7 persons |
| Area | 28.7 km² |
| Population Density | 0/km² |
| Total Dwellings | 3 |
| Australian Citizens | 100.0% |
| Latitude | -31.7011 |
| Longitude | 152.77 |
| Distance from Brisbane | 471 km |
| Region (SA4) | Sunshine Coast |
| Area (SA3) | Caloundra |
| Local Government | Port Macquarie-Hastings |
| Federal Electorate | Fisher |
Age Profile
Show counts
| 0–14 years | 0 (0.0%) |
| 15–24 years | 0 (0.0%) |
| 25–44 years | 0 (0.0%) |
| 45–64 years | 6 (85.7%) |
| 65+ years | 0 (0.0%) |
Suburbs Near Diamond Head
Same Postcode (4551)
More Diamond Head 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.