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- Gemini Mountains
Queensland · Postcode 4721
Gemini Mountains postcode and suburb data
Queensland · Phone area code 07 · 772 km from Brisbane
Suburb snapshot
Gemini Mountains 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 Gemini Mountains ranks: SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Gemini Mountains vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Gemini Mountains | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,625 ≈QLD | $1,770 | $1,836 |
| Rent/wk | $300 -QLD | $380 | $390 |
| Median age | 43 | 44.0 | 45.0 |
| SEIFA decile | 9/10 +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.
Gemini Mountains is a very remote community in Queensland, with postcode 4721. It lies roughly 772 km from Brisbane, classified by the ABS as very remote Australia. The area is administered by Isaac.
According to the 2021 Census, Gemini Mountains has a population of 65 with a median age of 43. The median weekly household income is $1,625, close to the QLD average.
Housing in Gemini Mountains includes a median weekly rent of $300, 17 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 100.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Gemini Mountains scores in decile 9 out of 10, which is well above the national average.
Gemini Mountains is part of the Bowen Basin - North statistical area in Queensland.
Gemini Mountains details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4721 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 65 |
| Median Age | 43 years |
| Median Household Income (Census 2021) | $1,625/week |
| Median Personal Income (Census 2021) | $1,062/week |
| Median Weekly Rent (Census 2021) | $300 |
| Average Household Size | 2.9 persons |
| Area | 557.1 km² |
| Population Density | 0/km² |
| Total Dwellings | 17 |
| Australian Citizens | 84.6% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 9/10 (well above average) |
| Latitude | -22.4840175 |
| Longitude | 147.6948373 |
| Distance from Brisbane | 772 km |
| Region (SA4) | Mackay - Isaac - Whitsunday |
| Area (SA3) | Bowen Basin - North |
| Local Government | Isaac |
| Federal Electorate | Capricornia |
| State Electorate | Gregory |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 13 (20.0%) |
| 15–24 years | 8 (12.3%) |
| 25–44 years | 18 (27.7%) |
| 45–64 years | 17 (26.2%) |
| 65+ years | 5 (7.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 4 (6.2%) |
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 | 0 (0.0%) |
| 2 vehicles | 6 (42.9%) |
| 3+ vehicles | 8 (57.1%) |
Suburbs Near Gemini Mountains
Same Postcode (4721)
More Gemini Mountains 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.