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Victoria · Postcode 3815
Tonimbuk postcode and suburb data
Victoria · Phone area code 03 · 70 km from Melbourne
Suburb snapshot
Tonimbuk at a glance vs VIC
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against VIC
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Tonimbuk ranks: household income is in the top 25% of VIC suburbs; SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Tonimbuk vs the VIC average and the national average, using population-weighted 2021 Census data.
| Metric | Tonimbuk | VIC avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,024 +VIC | $1,817 | $1,836 |
| Rent/wk | $260 -VIC | $375 | $390 |
| Mortgage/month | $2,111 ≈VIC | $1,933 | $1,958 |
| Median age | 50 | 46.0 | 45.0 |
| SEIFA decile | 9/10 +VIC | 6.0/10 | 6.0/10 |
| Unemployment | 0.0% -VIC | 5.0% | 5.0% |
Green pill = at least 10% above the VIC average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Tonimbuk is a locality 70 km from Melbourne in Victoria, classified as inner regional by the ABS. The postcode is 3815. It falls within the Melbourne - South East region. The local government area is Cardinia.
According to the 2021 Census, Tonimbuk has a population of 229 with a median age of 50. The median weekly household income is $2,024, above the VIC average. The Indigenous population is 7 (3.1% of residents).
Housing in Tonimbuk includes a median weekly rent of $260, median monthly mortgage repayment of $2,111, with 82 total dwellings. Housing costs in the area sit below the VIC average. Owner-occupied dwellings (owned or mortgaged) make up 89.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Tonimbuk scores in decile 9 out of 10, which is well above the national average.
Tonimbuk is part of the Cardinia statistical area in Victoria.
Tonimbuk details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 3815 |
| State | Victoria (VIC) |
| Phone Area Code | 03 |
| Population (2021) | 229 |
| Median Age | 50 years |
| Median Household Income (Census 2021) | $2,024/week |
| Median Personal Income (Census 2021) | $776/week |
| Median Weekly Rent (Census 2021) | $260 |
| Median Monthly Mortgage (Census 2021) | $2,111 |
| Average Household Size | 2.6 persons |
| Area | 38.4 km² |
| Population Density | 6/km² |
| Total Dwellings | 82 |
| Australian Citizens | 94.3% |
| Indigenous Population | 7 (3.1%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 9/10 (well above average) |
| Latitude | -38.0206756 |
| Longitude | 145.7182515 |
| Distance from Melbourne | 70 km |
| Region (SA4) | Melbourne - South East |
| Area (SA3) | Cardinia |
| Local Government | Cardinia |
| Federal Electorate | Monash |
| State Electorate | Narracan (Eastern Victoria) |
| Time Zone | AEST (UTC+10), Australia/Melbourne (standard time) |
Age Profile
Show counts
| 0–14 years | 34 (14.8%) |
| 15–24 years | 29 (12.7%) |
| 25–44 years | 37 (16.2%) |
| 45–64 years | 96 (41.9%) |
| 65+ years | 45 (19.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 20 (8.7%) |
| Arthritis | 15 (6.6%) |
| Cancer | 13 (5.7%) |
| Heart Disease | 11 (4.8%) |
| Diabetes | 7 (3.1%) |
| Lung Condition | 5 (2.2%) |
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 | 8 (10.3%) |
| 2 vehicles | 25 (32.1%) |
| 3+ vehicles | 45 (57.7%) |
Suburbs Near Tonimbuk
Same Postcode (3815)
More Tonimbuk 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.