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Queensland · Postcode 4738
Ilbilbie postcode and suburb data
Queensland · Phone area code 07 · 739 km from Brisbane
Suburb snapshot
Ilbilbie 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 Ilbilbie ranks: SEIFA decile 2 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Ilbilbie vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Ilbilbie | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,222 -QLD | $1,770 | $1,836 |
| Rent/wk | $200 -QLD | $380 | $390 |
| Mortgage/month | $1,509 -QLD | $1,774 | $1,958 |
| Median age | 53 | 44.0 | 45.0 |
| SEIFA decile | 2/10 -QLD | 4.0/10 | 6.0/10 |
| Unemployment | 3.6% -QLD | 6.0% | 5.0% |
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.
Ilbilbie is a locality 739 km from Brisbane in Queensland, classified as outer regional by the ABS. The postcode is 4738. It falls within the Mackay - Isaac - Whitsunday region. The local government area is Isaac.
According to the 2021 Census, Ilbilbie has a population of 385 with a median age of 53. The median weekly household income is $1,222, below the QLD average. The unemployment rate is 3.6%, lower than the QLD average. The Indigenous population is 15 (3.9% of residents).
Housing in Ilbilbie includes a median weekly rent of $200, median monthly mortgage repayment of $1,509, with 154 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 91.1% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Ilbilbie scores in decile 2 out of 10, which is well below the national average.
Ilbilbie is part of the Mackay statistical area in Queensland.
Ilbilbie details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4738 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 385 |
| Median Age | 53 years |
| Median Household Income (Census 2021) | $1,222/week |
| Median Personal Income (Census 2021) | $596/week |
| Median Weekly Rent (Census 2021) | $200 |
| Median Monthly Mortgage (Census 2021) | $1,509 |
| Average Household Size | 2.3 persons |
| Area | 200.0 km² |
| Population Density | 2/km² |
| Total Dwellings | 154 |
| Australian Citizens | 89.9% |
| Indigenous Population | 15 (3.9%) |
| Unemployment Rate | 3.6% |
| SEIFA IRSAD Decile | 2/10 (well below average) |
| Latitude | -21.6942901 |
| Longitude | 149.3965512 |
| Distance from Brisbane | 739 km |
| Region (SA4) | Mackay - Isaac - Whitsunday |
| Area (SA3) | Mackay |
| Local Government | Isaac |
| Federal Electorate | Capricornia |
| State Electorate | Mirani |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 47 (12.2%) |
| 15–24 years | 28 (7.3%) |
| 25–44 years | 78 (20.3%) |
| 45–64 years | 125 (32.5%) |
| 65+ years | 110 (28.6%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 60 (15.6%) |
| Asthma | 42 (10.9%) |
| Cancer | 18 (4.7%) |
| Lung Condition | 17 (4.4%) |
| Diabetes | 16 (4.2%) |
| Heart Disease | 15 (3.9%) |
| Dementia | 6 (1.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 3 (2.0%) |
| 1 vehicle | 41 (27.9%) |
| 2 vehicles | 57 (38.8%) |
| 3+ vehicles | 46 (31.3%) |
Suburbs Near Ilbilbie
Same Postcode (4738)
More Ilbilbie 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.