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Western Australia · Postcode 6173
Secret Harbour postcode and suburb data
Western Australia · Phone area code 08 · 51 km from Perth
Suburb snapshot
Secret Harbour at a glance vs WA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against WA
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Secret Harbour ranks: household income is in the top 10% of WA suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Secret Harbour vs the WA average and the national average, using population-weighted 2021 Census data.
| Metric | Secret Harbour | WA avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,492 +WA | $1,891 | $1,836 |
| Rent/wk | $380 ≈WA | $355 | $390 |
| Mortgage/month | $2,000 ≈WA | $1,890 | $1,958 |
| Median age | 34 | 43.0 | 45.0 |
| SEIFA decile | 8/10 +WA | 6.0/10 | 6.0/10 |
| Unemployment | 4.6% ≈WA | 5.0% | 5.0% |
Green pill = at least 10% above the WA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Postcode 6173 covers Secret Harbour, an inland suburb of Perth about 51 km from the city centre. It forms part of the Perth - South West region of Western Australia. Local government services are provided by Rockingham.
According to the 2021 Census, Secret Harbour has a population of 12,474 with a median age of 34. The median weekly household income is $2,492, above the WA average. The unemployment rate is 4.6%. The Indigenous population is 265 (2.1% of residents).
Housing in Secret Harbour includes a median weekly rent of $380, median monthly mortgage repayment of $2,000, with 3,872 total dwellings. Owner-occupied dwellings (owned or mortgaged) make up 80.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Secret Harbour scores in decile 8 out of 10, which is above the national average.
Schools in Secret Harbour include Comet Bay College, Secret Harbour Primary School and Comet Bay Primary School.
Secret Harbour is part of the Rockingham statistical area in Western Australia.
Secret Harbour details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 6173 |
| State | Western Australia (WA) |
| Phone Area Code | 08 |
| Population (2021) | 12,474 |
| Median Age | 34 years |
| Median Household Income (Census 2021) | $2,492/week |
| Median Personal Income (Census 2021) | $967/week |
| Median Weekly Rent (Census 2021) | $380 |
| Median Monthly Mortgage (Census 2021) | $2,000 |
| Average Household Size | 3.1 persons |
| Area | 6.5 km² |
| Population Density | 1906/km² |
| Total Dwellings | 3,872 |
| Australian Citizens | 85.7% |
| Indigenous Population | 265 (2.1%) |
| Unemployment Rate | 4.6% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -32.4051251 |
| Longitude | 115.7634366 |
| Distance from Perth | 51 km |
| Region (SA4) | Perth - South West |
| Area (SA3) | Rockingham |
| Local Government | Rockingham |
| Federal Electorate | Brand |
| State Electorate | Warnbro (South Metropolitan) |
| Time Zone | AWST (UTC+8), Australia/Perth (standard time) |
Age Profile
Show counts
| 0–14 years | 3,140 (25.2%) |
| 15–24 years | 1,865 (15.0%) |
| 25–44 years | 3,316 (26.6%) |
| 45–64 years | 3,351 (26.9%) |
| 65+ years | 803 (6.4%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 939 (7.5%) |
| Arthritis | 705 (5.7%) |
| Diabetes | 341 (2.7%) |
| Cancer | 241 (1.9%) |
| Heart Disease | 227 (1.8%) |
| Lung Condition | 117 (0.9%) |
| Dementia | 21 (0.2%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 40 (1.0%) |
| 1 vehicle | 902 (23.5%) |
| 2 vehicles | 1,764 (45.9%) |
| 3+ vehicles | 1,137 (29.6%) |
Schools in Secret Harbour
ACARA 2025 school profiles for schools located in Secret Harbour. ICSEA is shown where ACARA publishes it.
Suburbs Near Secret Harbour
More Secret Harbour 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.