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Queensland · Postcode 4741
Seaforth postcode and suburb data
Queensland · Phone area code 07 · 835 km from Brisbane
Suburb snapshot
Seaforth at a glance vs QLD
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against QLD
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Seaforth ranks: household income sits in the bottom 25% of QLD suburbs; SEIFA decile 2 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Seaforth vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Seaforth | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,088 -QLD | $1,770 | $1,836 |
| Rent/wk | $290 -QLD | $380 | $390 |
| Mortgage/month | $1,733 ≈QLD | $1,774 | $1,958 |
| Median age | 56 | 44.0 | 45.0 |
| SEIFA decile | 2/10 -QLD | 4.0/10 | 6.0/10 |
| Unemployment | 3.6% -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.
Seaforth is a remote community in Queensland, with postcode 4741. It lies roughly 835 km from Brisbane, classified by the ABS as remote Australia. The area is administered by Mackay.
According to the 2021 Census, Seaforth has a population of 800 with a median age of 56. The median weekly household income is $1,088, below the QLD average. The unemployment rate is 3.6%, lower than the QLD average. The Indigenous population is 53 (6.6% of residents).
Housing in Seaforth includes a median weekly rent of $290, median monthly mortgage repayment of $1,733, with 317 total dwellings. Housing costs in the area sit below the QLD average. Owner-occupied dwellings (owned or mortgaged) make up 87.1% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Seaforth scores in decile 2 out of 10, which is well below the national average.
Seaforth is served by Seaforth State School.
Seaforth is part of the Townsville statistical area in Queensland.
Seaforth details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4741 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 800 |
| Median Age | 56 years |
| Median Household Income (Census 2021) | $1,088/week |
| Median Personal Income (Census 2021) | $559/week |
| Median Weekly Rent (Census 2021) | $290 |
| Median Monthly Mortgage (Census 2021) | $1,733 |
| Average Household Size | 2.1 persons |
| Area | 68.1 km² |
| Population Density | 12/km² |
| Total Dwellings | 317 |
| Australian Citizens | 83.2% |
| Indigenous Population | 53 (6.6%) |
| Unemployment Rate | 3.6% |
| SEIFA IRSAD Decile | 2/10 (well below average) |
| Latitude | -20.93056 |
| Longitude | 148.9647393 |
| Distance from Brisbane | 835 km |
| Region (SA4) | Townsville |
| Area (SA3) | Townsville |
| Local Government | Mackay |
| Federal Electorate | Dawson |
| State Electorate | Whitsunday |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 110 (13.8%) |
| 15–24 years | 53 (6.6%) |
| 25–44 years | 140 (17.5%) |
| 45–64 years | 266 (33.2%) |
| 65+ years | 244 (30.5%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 107 (13.4%) |
| Heart Disease | 58 (7.2%) |
| Asthma | 57 (7.1%) |
| Diabetes | 46 (5.8%) |
| Cancer | 33 (4.1%) |
| Lung Condition | 26 (3.2%) |
| Dementia | 9 (1.1%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 3 (1.0%) |
| 1 vehicle | 99 (32.4%) |
| 2 vehicles | 141 (46.1%) |
| 3+ vehicles | 63 (20.6%) |
Schools in Seaforth
ACARA 2025 school profiles for schools located in Seaforth. ICSEA is shown where ACARA publishes it.
Suburbs Near Seaforth
Same Postcode (4741)
More Seaforth 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.