South Australia · Postcode 5255
Finniss postcode and suburb data
South Australia · Phone area code 08 · 57 km from Adelaide
Suburb snapshot
Finniss at a glance vs SA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against SA
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
Finniss vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Finniss | SA avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,406 ≈SA | $1,545 | $1,836 |
| Rent/wk | $250 -SA | $308 | $390 |
| Mortgage/month | $1,976 +SA | $1,558 | $1,958 |
| Median age | 49 | 45.0 | 45.0 |
| SEIFA decile | 6/10 ≈SA | 5.0/10 | 6.0/10 |
| Unemployment | 7.5% +SA | 6.0% | 5.0% |
Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Finniss is a locality 57 km from Adelaide in South Australia, classified as inner regional by the ABS. The postcode is 5255. It falls within the South Australia - South East region. The local government area is Alexandrina.
According to the 2021 Census, Finniss has a population of 293 with a median age of 49. The median weekly household income is $1,406, close to the SA average. The unemployment rate is 7.5%, higher than the SA average. The Indigenous population is 3 (1.0% of residents).
Housing in Finniss includes a median weekly rent of $250, median monthly mortgage repayment of $1,976, with 125 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 89.1% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Finniss scores in decile 6 out of 10, which is around the national average.
Finniss is part of the Murray and Mallee statistical area in South Australia.
Finniss details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5255 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 293 |
| Median Age | 49 years |
| Median Household Income (Census 2021) | $1,406/week |
| Median Personal Income (Census 2021) | $700/week |
| Median Weekly Rent (Census 2021) | $250 |
| Median Monthly Mortgage (Census 2021) | $1,976 |
| Average Household Size | 2.4 persons |
| Area | 99.1 km² |
| Population Density | 3/km² |
| Total Dwellings | 125 |
| Australian Citizens | 94.2% |
| Indigenous Population | 3 (1.0%) |
| Unemployment Rate | 7.5% |
| SEIFA IRSAD Decile | 6/10 (average) |
| Latitude | -35.4076471 |
| Longitude | 138.8303092 |
| Distance from Adelaide | 57 km |
| Region (SA4) | South Australia - South East |
| Area (SA3) | Murray and Mallee |
| Local Government | Alexandrina |
| Federal Electorate | Mayo |
| State Electorate | Hammond |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 44 (15.0%) |
| 15–24 years | 25 (8.5%) |
| 25–44 years | 49 (16.7%) |
| 45–64 years | 95 (32.4%) |
| 65+ years | 80 (27.3%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 26 (8.9%) |
| Asthma | 23 (7.8%) |
| Heart Disease | 15 (5.1%) |
| Diabetes | 12 (4.1%) |
| Cancer | 12 (4.1%) |
| Lung Condition | 3 (1.0%) |
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 | 25 (20.7%) |
| 2 vehicles | 38 (31.4%) |
| 3+ vehicles | 58 (47.9%) |
Suburbs Near Finniss
Same Postcode (5255)
More Finniss 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.