Septimus Postcode

Queensland

Outer Regional

4754

Postcode for Septimus, QLD
Phone area code: 07 · 819 km from Brisbane · Pop. 120

120

Population

Median Age

$1,843

Household Income/wk

$150

Median Rent/wk

4/10

SEIFA Advantage

205.2

Area (km²)

Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.

How Septimus Compares

Septimus vs the QLD average and the national average (2021 Census, population-weighted).

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

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

Age Profile

17.5%

21.7%

22.5%

0–14 (17.5%) 15–24 (2.5%) 25–44 (21.7%) 45–64 (21.7%) 65+ (22.5%)

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

64.5%

25.8%

9.7%

Owned outright (64.5%) Mortgaged (25.8%) Rented (9.7%)

SEIFA Socio-economic Index

Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 4 of 10. Higher deciles indicate more advantage.

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

Gargett 7.0 km Benholme 7.2 km Mia Mia 7.9 km Pinnacle 10.1 km Pinevale 11.3 km Mirani 11.5 km Dows Creek 12.2 km Owens Creek 12.7 km Mount Martin 13.9 km Finch Hatton 15.3 km Kinchant Dam 15.5 km Brightly 15.7 km

Same Postcode (4754)

Benholme Dows Creek Mia Mia Mirani Mount Martin Pinevale

More Septimus Data

Mackay LGA 123 suburbs, 17 postcodes, 115,681 people Climate & Weather Closest station: Mackay (44.6 km) NDIS Providers NDIS data for Mackay LGA

Page last reviewed June 2026. Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.