Mount St John Postcode

Queensland

Outer Regional

4818

Postcode for Mount St John, QLD
Phone area code: 07 · 1116 km from Brisbane · Pop. 103

103

Population

Median Age

$949

Household Income/wk

$205

Median Rent/wk

4/10

SEIFA Advantage

6.0

Area (km²)

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

Where Mount St John ranks: household income sits in the bottom 25% of QLD suburbs.

How Mount St John Compares

Mount St John vs the QLD average and the national average (2021 Census, population-weighted).

Metric	Mount St John	QLD avg	AU avg
Household income/wk	$949 -QLD	$1,770	$1,836
Rent/wk	$205 -QLD	$380	$390
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.

Mount St John is a locality 1116 km from Brisbane in Queensland, classified as outer regional by the ABS. The postcode is 4818. It falls within the Townsville region. The local government area is Townsville.

According to the 2021 Census, Mount St John has a population of 103 with a median age of 42. The median weekly household income is $949, below the QLD average.

Housing in Mount St John includes a median weekly rent of $205, 30 total dwellings. Housing costs in the area sit below the QLD average. Rental properties account for 43.5% of dwellings.

On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Mount St John scores in decile 4 out of 10, which is below the national average.

Mount St John is part of the Townsville statistical area in Queensland.

Mount St John Details

Postcode	4818
State	Queensland (QLD)
Phone Area Code	07
Population (2021)	103
Median Age	42 years
Median Household Income (Census 2021)	$949/week
Median Personal Income (Census 2021)	$1,331/week
Median Weekly Rent (Census 2021)	$205
Average Household Size	1.4 persons
Area	6.0 km²
Population Density	17/km²
Total Dwellings	30
Australian Citizens	83.5%
Unemployment Rate	0.0%
SEIFA IRSAD Decile	4/10 (below average)
Latitude	-19.2529915
Longitude	146.7383988
Distance from Brisbane	1116 km
Region (SA4)	Townsville
Area (SA3)	Townsville
Local Government	Townsville
Federal Electorate	Herbert

Age Profile

23.3%

19.4%

34.0%

15.5%

0–14 (0.0%) 15–24 (23.3%) 25–44 (19.4%) 45–64 (34.0%) 65+ (15.5%)

Show counts

0–14 years	0 (0.0%)
15–24 years	24 (23.3%)
25–44 years	20 (19.4%)
45–64 years	35 (34.0%)
65+ years	16 (15.5%)

Housing Tenure

56.5%

43.5%

Owned outright (56.5%) Mortgaged (0.0%) Rented (43.5%)

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)

Cancer	6 (5.8%)
Diabetes	5 (4.9%)
Asthma	5 (4.9%)
Arthritis	4 (3.9%)
Heart Disease	4 (3.9%)

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	17 (53.1%)
2 vehicles	9 (28.1%)
3+ vehicles	6 (18.8%)

Suburbs Near Mount St John

Bohle 1.9 km Mount Louisa 2.6 km Garbutt East 3.3 km Garbutt 3.3 km Cosgrove 3.4 km Burdell 3.9 km Heatley 4.2 km Vincent 4.6 km Rowes Bay 4.7 km Gulliver 4.7 km Shaw 4.8 km Kirwan 4.9 km

Same Postcode (4818)

Beach Holm Black River Blue Hills Bluewater Bluewater Park Bohle Burdell Bushland Beach Cosgrove Deeragun Innes Jensen Lynam Mount Low Purono Park Saunders Beach Shaw Toolakea Yabulu

More Mount St John Data

Townsville LGA 102 suburbs, 12 postcodes, 188,838 people Climate & Weather Closest station: Townsville (8.6 km) NDIS Providers NDIS data for Townsville 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.