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Queensland · Postcode 4405
Grassdale postcode and suburb data
Queensland · Phone area code 07 · 186 km from Brisbane
Suburb snapshot
Grassdale 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 Grassdale ranks: household income sits in the bottom 10% of QLD suburbs; rents sit in the cheapest 10% in QLD; SEIFA decile 10 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Grassdale vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Grassdale | QLD avg | AU avg |
|---|---|---|---|
| Median age | 73 | 44.0 | 45.0 |
| SEIFA decile | 10/10 +QLD | 4.0/10 | 6.0/10 |
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.
Grassdale is a remote community in Queensland, with postcode 4405. It lies roughly 186 km from Brisbane, classified by the ABS as remote Australia. The area is administered by Toowoomba.
According to the 2021 Census, Grassdale has a population of 5 with a median age of 73.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Grassdale scores in decile 10 out of 10, which is well above the national average.
Grassdale is part of the Burnett statistical area in Queensland.
Grassdale details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4405 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 5 |
| Median Age | 73 years |
| Average Household Size | 2 persons |
| Area | 73.6 km² |
| Population Density | 0/km² |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -27.4131282 |
| Longitude | 151.1392401 |
| Distance from Brisbane | 186 km |
| Region (SA4) | Wide Bay |
| Area (SA3) | Burnett |
| Local Government | Toowoomba |
| Federal Electorate | Maranoa |
| State Electorate | Warrego |
| 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 | 0 (0.0%) |
| 65+ years | 0 (0.0%) |
SEIFA socio-economic index
Suburbs Near Grassdale
Same Postcode (4405)
More Grassdale 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.