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Queensland · Postcode 4811
Idalia postcode and suburb data
Queensland · Phone area code 07 · 1107 km from Brisbane
Suburb snapshot
Idalia 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 Idalia ranks: household income is in the top 10% of QLD suburbs; SEIFA decile 10 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Idalia vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Idalia | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,524 +QLD | $1,770 | $1,836 |
| Rent/wk | $400 ≈QLD | $380 | $390 |
| Mortgage/month | $1,920 ≈QLD | $1,774 | $1,958 |
| Median age | 32 | 44.0 | 45.0 |
| SEIFA decile | 10/10 +QLD | 4.0/10 | 6.0/10 |
| Unemployment | 2.8% -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.
Idalia (4811) is a coastal town in regional Queensland. It lies around 1107 km from Brisbane by road. The locality is part of the Townsville statistical area. It is administered by Townsville.
According to the 2021 Census, Idalia has a population of 4,563 with a median age of 32. The median weekly household income is $2,524, above the QLD average. The unemployment rate is 2.8%, lower than the QLD average. The Indigenous population is 139 (3.0% of residents).
Housing in Idalia includes a median weekly rent of $400, median monthly mortgage repayment of $1,920, with 1,604 total dwellings. Rental properties account for 43.2% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Idalia scores in decile 10 out of 10, which is well above the national average.
Idalia is served by Oonoonba State School.
Idalia is part of the Townsville statistical area in Queensland.
Idalia details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4811 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 4,563 |
| Median Age | 32 years |
| Median Household Income (Census 2021) | $2,524/week |
| Median Personal Income (Census 2021) | $1,240/week |
| Median Weekly Rent (Census 2021) | $400 |
| Median Monthly Mortgage (Census 2021) | $1,920 |
| Average Household Size | 2.7 persons |
| Area | 3.4 km² |
| Population Density | 1346/km² |
| Total Dwellings | 1,604 |
| Australian Citizens | 88.4% |
| Indigenous Population | 139 (3.0%) |
| Unemployment Rate | 2.8% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -19.3 |
| Longitude | 146.816667 |
| Distance from Brisbane | 1107 km |
| Region (SA4) | Townsville |
| Area (SA3) | Townsville |
| Local Government | Townsville |
| Federal Electorate | Dawson |
| State Electorate | Townsville |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 940 (20.6%) |
| 15–24 years | 745 (16.3%) |
| 25–44 years | 1,468 (32.2%) |
| 45–64 years | 991 (21.7%) |
| 65+ years | 418 (9.2%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 304 (6.7%) |
| Arthritis | 249 (5.5%) |
| Diabetes | 122 (2.7%) |
| Heart Disease | 122 (2.7%) |
| Cancer | 82 (1.8%) |
| Dementia | 65 (1.4%) |
| Lung Condition | 38 (0.8%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 14 (0.9%) |
| 1 vehicle | 487 (30.5%) |
| 2 vehicles | 777 (48.6%) |
| 3+ vehicles | 320 (20.0%) |
Schools in Idalia
ACARA 2025 school profiles for schools located in Idalia. ICSEA is shown where ACARA publishes it.
Suburbs Near Idalia
Same Postcode (4811)
More Idalia 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.