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Tasmania · Postcode 7175
Marion Bay postcode and suburb data
Tasmania · Phone area code 03 · 44 km from Hobart
Suburb snapshot
Marion Bay at a glance vs TAS
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against TAS
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
Marion Bay vs the TAS average and the national average, using population-weighted 2021 Census data.
| Metric | Marion Bay | TAS avg | AU avg | Greater Hobart |
|---|---|---|---|---|
| Household income/wk | $1,325 ≈TAS | $1,443 | $1,836 | $1,571 |
| Rent/wk | $300 ≈TAS | $311 | $390 | $355 |
| Mortgage/month | $867 -TAS | $1,401 | $1,958 | $1,538 |
| Median age | 53 | 46.0 | 45.0 | 44.0 |
| SEIFA decile | 4/10 ≈TAS | 3.0/10 | 6.0/10 | 4.0/10 |
| Unemployment | 0.0% -TAS | 6.0% | 5.0% | 6.0% |
Green pill = at least 10% above the TAS average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Marion Bay is a locality 44 km from Hobart in Tasmania, classified as outer regional by the ABS. The postcode is 7175. It falls within the Hobart region. The local government area is Sorell.
According to the 2021 Census, Marion Bay has a population of 56 with a median age of 53. The median weekly household income is $1,325, close to the TAS average.
Housing in Marion Bay includes a median weekly rent of $300, median monthly mortgage repayment of $867, with 28 total dwellings. Housing costs in the area sit below the TAS average. Owner-occupied dwellings (owned or mortgaged) make up 85.2% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Marion Bay scores in decile 4 out of 10, which is below the national average.
Marion Bay is part of the Sorell - Dodges Ferry statistical area in Tasmania.
Marion Bay details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 7175 |
| State | Tasmania (TAS) |
| Phone Area Code | 03 |
| Population (2021) | 56 |
| Median Age | 53 years |
| Median Household Income (Census 2021) | $1,325/week |
| Median Personal Income (Census 2021) | $754/week |
| Median Weekly Rent (Census 2021) | $300 |
| Median Monthly Mortgage (Census 2021) | $867 |
| Average Household Size | 2 persons |
| Area | 4.1 km² |
| Population Density | 14/km² |
| Total Dwellings | 28 |
| Australian Citizens | 94.6% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -42.8265569 |
| Longitude | 147.856063 |
| Distance from Hobart | 44 km |
| Region (SA4) | Hobart |
| Area (SA3) | Sorell - Dodges Ferry |
| Local Government | Sorell |
| Federal Electorate | Lyons |
| State Electorate | Lyons (Prosser) |
| Time Zone | AEST (UTC+10), Australia/Hobart (standard time) |
Age Profile
Show counts
| 0–14 years | 4 (7.1%) |
| 15–24 years | 5 (8.9%) |
| 25–44 years | 8 (14.3%) |
| 45–64 years | 25 (44.6%) |
| 65+ years | 14 (25.0%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 9 (16.1%) |
| Diabetes | 3 (5.4%) |
| Asthma | 3 (5.4%) |
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 | 7 (33.3%) |
| 2 vehicles | 10 (47.6%) |
| 3+ vehicles | 4 (19.0%) |
Suburbs Near Marion Bay
Same Postcode (7175)
More Marion Bay 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.