City of Rockingham
Secret Harbour
Secret Harbour at a glance
Walk score
12
Very car dependent
Population
12.5k
Median age 34
The brief
What to know about Secret Harbour.
Secret Harbour (6173) sits in the Rockingham region of Western Australia.
Secret Harbour has roughly 12,474 residents, with a young-family demographic. Households are predominantly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
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What it’s like to live here.
Secret Harbour scores 12/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 31°C (warm), winter mornings around 8°C (mild). Annual rainfall lands at about 724mm. Data comes from the Bureau of Meteorology's Mandurah station, 11.3km away.
Schooling within or near the suburb covers 9 government primary, 4 government secondary, 2 Catholic, 1 independent.
Who lives here
Demographics.
The 2021 Census put Secret Harbour's population at 12,474, with a median age of 34. That sits as a young-family demographic. Households are predominantly owner-occupied (79% own, 19% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (87% family households, 11% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
12,474
Median age
34
Family households
87%
Lone person
11%
Demographics data as of May 2026· ABS 2021 Census
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Sales data as of May 2026· sales-wa
Rental and ownership
Weekly rent (house)
$380/wk
Weekly rent (unit)
$380/wk
Owner occupied
79%
Renter occupied
19%
At a deeper level
12,474
Median age: 34
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Getting around
Walkability.
12
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Nearby suburbs
Education
Schools in Secret Harbour.
Local schools for Secret Harbour
View the catchment for each school to find out more.
Government School Catchment
Secret Harbour Primary School
Comet Bay Primary School
Comet Bay College
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
724 mm
Hottest Month (avg max)
31.7°C
Coldest Month (avg min)
8.1°C
Monthly Rainfall (mm)
Weather data from BOM station Mandurah (11 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Secret Harbour.
- What is the Secret Harbour postcode?
- Secret Harbour is in the 6173 postcode, in WA, in the City of Rockingham region.
- What is the average rent in Secret Harbour?
- The median weekly rent for houses is $380, for units it's $380.
- What schools are in Secret Harbour?
- There are 20 schools serving Secret Harbour on this page, including Secret Harbour Primary School, Comet Bay Primary School, Comet Bay College.
- How walkable is Secret Harbour?
- Secret Harbour has a Walk Score of 12 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near Secret Harbour?
- Secret Harbour is close to Golden Bay, Port Kennedy, Karnup, Singleton, Stake Hill.
- What is the population of Secret Harbour?
- Secret Harbour has approximately 12,474 residents. The median age is 34.
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Secret Harbour
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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