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Queensland · Postcode 4551
Diamond Head postcode and suburb data
Queensland · Phone area code 07 · 471 km from Brisbane
Suburb snapshot
Diamond Head at a glance vs QLD
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against QLD
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Diamond Head ranks: household income sits in the bottom 10% of QLD suburbs; rents sit in the cheapest 10% in QLD.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Diamond Head vs the QLD average and the national average, using population-weighted 2021 Census data.
| 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
Location, Census, housing, SEIFA and geography fields used across this profile.
| 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 |
| State Electorate | Kawana |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
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.