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Victoria · Postcode 3400
St Helens Plains postcode and suburb data
Victoria · Phone area code 03 · 248 km from Melbourne
Suburb snapshot
St Helens Plains 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 St Helens Plains ranks: household income sits in the bottom 25% of VIC suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
St Helens Plains vs the VIC average and the national average, using population-weighted 2021 Census data.
| Metric | St Helens Plains | VIC avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,187 -VIC | $1,817 | $1,836 |
| Rent/wk | $80 -VIC | $375 | $390 |
| Mortgage/month | $813 -VIC | $1,933 | $1,958 |
| Median age | 53 | 46.0 | 45.0 |
| SEIFA decile | 8/10 +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.
St Helens Plains is a locality 248 km from Melbourne in Victoria, classified as outer regional by the ABS. The postcode is 3400. It falls within the North West region. The local government area is Horsham.
According to the 2021 Census, St Helens Plains has a population of 40 with a median age of 53. The median weekly household income is $1,187, below the VIC average.
Housing in St Helens Plains includes a median weekly rent of $80, median monthly mortgage repayment of $813, with 14 total dwellings. Housing costs in the area sit below the VIC average. Owner-occupied dwellings (owned or mortgaged) make up 100.0% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, St Helens Plains scores in decile 8 out of 10, which is above the national average.
St Helens Plains is part of the Grampians statistical area in Victoria.
St Helens Plains details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 3400 |
| State | Victoria (VIC) |
| Phone Area Code | 03 |
| Population (2021) | 40 |
| Median Age | 53 years |
| Median Household Income (Census 2021) | $1,187/week |
| Median Personal Income (Census 2021) | $1,017/week |
| Median Weekly Rent (Census 2021) | $80 |
| Median Monthly Mortgage (Census 2021) | $813 |
| Average Household Size | 2.5 persons |
| Area | 134.4 km² |
| Population Density | 0/km² |
| Total Dwellings | 14 |
| Australian Citizens | 90.0% |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -36.8109 |
| Longitude | 142.456 |
| Distance from Melbourne | 248 km |
| Region (SA4) | North West |
| Area (SA3) | Grampians |
| Local Government | Horsham |
| Federal Electorate | Mallee |
| State Electorate | Lowan (Western Victoria) |
| Time Zone | AEST (UTC+10), Australia/Melbourne (standard time) |
Age Profile
Show counts
| 0–14 years | 10 (25.0%) |
| 15–24 years | 3 (7.5%) |
| 25–44 years | 5 (12.5%) |
| 45–64 years | 16 (40.0%) |
| 65+ years | 3 (7.5%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 7 (17.5%) |
| Heart Disease | 4 (10.0%) |
| Arthritis | 3 (7.5%) |
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 | 4 (22.2%) |
| 2 vehicles | 8 (44.4%) |
| 3+ vehicles | 6 (33.3%) |
Suburbs Near St Helens Plains
Same Postcode (3400)
More St Helens Plains 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.