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Queensland · Postcode 4754
Septimus postcode and suburb data
Queensland · Phone area code 07 · 819 km from Brisbane
Suburb snapshot
Septimus 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.
Detailed comparison table
Septimus vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Septimus | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,843 ≈QLD | $1,770 | $1,836 |
| Rent/wk | $150 -QLD | $380 | $390 |
| Mortgage/month | $1,950 ≈QLD | $1,774 | $1,958 |
| Median age | 47 | 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.
Septimus is a locality 819 km from Brisbane in Queensland, classified as outer regional by the ABS. The postcode is 4754. It falls within the Mackay - Isaac - Whitsunday region. The local government area is Mackay.
According to the 2021 Census, Septimus has a population of 120 with a median age of 47. The median weekly household income is $1,843, close to the QLD average.
Housing in Septimus includes a median weekly rent of $150, median monthly mortgage repayment of $1,950, with 36 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 90.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Septimus scores in decile 4 out of 10, which is below the national average.
Septimus is part of the Mackay statistical area in Queensland.
Septimus details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4754 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 120 |
| Median Age | 47 years |
| Median Household Income (Census 2021) | $1,843/week |
| Median Personal Income (Census 2021) | $671/week |
| Median Weekly Rent (Census 2021) | $150 |
| Median Monthly Mortgage (Census 2021) | $1,950 |
| Average Household Size | 2.6 persons |
| Area | 205.2 km² |
| Population Density | 1/km² |
| Total Dwellings | 36 |
| Australian Citizens | 87.5% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -21.2038923 |
| Longitude | 148.7652646 |
| Distance from Brisbane | 819 km |
| Region (SA4) | Mackay - Isaac - Whitsunday |
| Area (SA3) | Mackay |
| Local Government | Mackay |
| Federal Electorate | Capricornia |
| State Electorate | Mirani |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 21 (17.5%) |
| 15–24 years | 3 (2.5%) |
| 25–44 years | 26 (21.7%) |
| 45–64 years | 26 (21.7%) |
| 65+ years | 27 (22.5%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 10 (8.3%) |
| Heart Disease | 8 (6.7%) |
| Cancer | 8 (6.7%) |
| Asthma | 6 (5.0%) |
| Lung Condition | 3 (2.5%) |
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 | 21 (56.8%) |
| 3+ vehicles | 16 (43.2%) |
Suburbs Near Septimus
Same Postcode (4754)
More Septimus 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.