Queensland · Postcode 4850
Blackrock postcode and suburb data
Queensland · Phone area code 07 · 1201 km from Brisbane
Suburb snapshot
Blackrock 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 Blackrock ranks: household income is in the top 25% of QLD suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Blackrock vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Blackrock | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,963 +QLD | $1,770 | $1,836 |
| Rent/wk | $190 -QLD | $380 | $390 |
| Mortgage/month | $1,192 -QLD | $1,774 | $1,958 |
| Median age | 42 | 44.0 | 45.0 |
| SEIFA decile | 4/10 ≈QLD | 4.0/10 | 6.0/10 |
| Unemployment | 0.0% -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.
Blackrock is a remote community in Queensland, with postcode 4850. It lies roughly 1201 km from Brisbane, classified by the ABS as remote Australia. The area is administered by Hinchinbrook.
According to the 2021 Census, Blackrock has a population of 319 with a median age of 42. The median weekly household income is $1,963, above the QLD average. The Indigenous population is 17 (5.3% of residents).
Housing in Blackrock includes a median weekly rent of $190, median monthly mortgage repayment of $1,192, with 115 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 88.1% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Blackrock scores in decile 4 out of 10, which is below the national average.
Blackrock is part of the Charters Towers - Ayr - Ingham statistical area in Queensland.
Blackrock details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4850 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 319 |
| Median Age | 42 years |
| Median Household Income (Census 2021) | $1,963/week |
| Median Personal Income (Census 2021) | $863/week |
| Median Weekly Rent (Census 2021) | $190 |
| Median Monthly Mortgage (Census 2021) | $1,192 |
| Average Household Size | 2.6 persons |
| Area | 63.4 km² |
| Population Density | 5/km² |
| Total Dwellings | 115 |
| Australian Citizens | 90.3% |
| Indigenous Population | 17 (5.3%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -18.6866452 |
| Longitude | 146.1756323 |
| Distance from Brisbane | 1201 km |
| Region (SA4) | Townsville |
| Area (SA3) | Charters Towers - Ayr - Ingham |
| Local Government | Hinchinbrook |
| Federal Electorate | Kennedy |
| State Electorate | Traeger |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 56 (17.6%) |
| 15–24 years | 46 (14.4%) |
| 25–44 years | 71 (22.3%) |
| 45–64 years | 75 (23.5%) |
| 65+ years | 73 (22.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 35 (11.0%) |
| Asthma | 24 (7.5%) |
| Heart Disease | 18 (5.6%) |
| Cancer | 16 (5.0%) |
| Diabetes | 12 (3.8%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 24 (22.4%) |
| 2 vehicles | 40 (37.4%) |
| 3+ vehicles | 43 (40.2%) |
Suburbs Near Blackrock
Same Postcode (4850)
More Blackrock 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.