Thornlie at a glance
Median house
$605,000
Median unit
$353,000
Walk score
18
Very car dependent
Population
23.7k
Median age 38
The brief
What to know about Thornlie.
The postcode for Thornlie is 6108 (WA), part of Greater Perth.
The median house price in Thornlie is $605,000.
Thornlie (6108) sits in the Gosnells region of Western Australia. The median house here is $605,000, below the Western Australia median of around $720K.
Thornlie has roughly 23,665 residents, with a typical family-age mix. Households are predominantly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
Side by side
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Median, growth, schools, walkability, all in one view.
Day to day
What it’s like to live here.
Thornlie scores 18/100 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 32°C (warm), winter mornings around 8°C (mild). Annual rainfall lands at about 777mm. Data comes from the Bureau of Meteorology's Perth Airport station, 35.0km away.
Schooling within or near the suburb covers 10 government primary, 1 government secondary, 4 Catholic, 3 independent.
Who lives here
Demographics.
The 2021 Census put Thornlie's population at 23,665, with a median age of 38. That sits as a typical family-age mix. Households are predominantly owner-occupied (76% own, 21% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (76% family households, 21% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
23,665
Median age
38
Family households
76%
Lone person
21%
Demographics data as of May 2026· ABS 2021 Census
Houses change hands at $605,000 on a typical sale, below the Western Australia median. Units come in around $353,000, roughly 42% below the house median.
For buyers
A 20% deposit on the median house works out to roughly $121,000. Prices are below the Western Australia median, which keeps Thornlie on the radar for first-home buyers and right-sizers.
Market
The price of a home here.
Median house price
$605,000
+0.0% over the past year. Median unit price $353,000.
Sales data as of December 2024· sales-abs
Rental and ownership
Weekly rent (house)
$330/wk
Weekly rent (unit)
$330/wk
Owner occupied
76%
Renter occupied
21%
At a deeper level
$605,000
$353,000
23,665
Median age: 38
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For investors
Investment overview.
Gross rental yield on houses sits at 2.84% (median rent $330/wk against a $605,000 price tag). Units yield 4.86% gross, often the better cash-flow play for first-time investors. Renter share is modest (21%), so the rental pool is smaller and tenant demand can be patchier than in higher-density suburbs.
Gross Yield (House)
Source: ABS Data by Region (SA2-level, 2024) · Dec 20242.84%
Based on $605,000 median
Gross Yield (Unit)
Source: ABS Data by Region (SA2-level, 2024) · Dec 20244.86%
Based on $353,000 median
Annual Growth (House)
Source: ABS Data by Region (SA2-level, 2024) · Dec 2024–
Year-on-year capital growth
Annual Growth (Unit)
Source: ABS Data by Region (SA2-level, 2024) · Dec 2024–
Year-on-year capital growth
Owner Occupancy
Source: ABS Census 2021 · May 202676%
Higher = more owner-occupier demand
Days on Market
Source: ABS Data by Region (SA2-level, 2024) · Dec 2024–
Lower = higher buyer demand
Gross rental yield is annual rent divided by purchase price, before expenses. It does not account for vacancy rates, management fees, maintenance, or financing costs. Use this as a starting point for further research.
Getting around
Walkability.
18
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Thornlie.
Local schools for Thornlie
View the catchment for each school to find out more.
Government School Catchment
Yale Primary School
South Thornlie Primary School
Thornlie Senior High School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
777 mm
Hottest Month (avg max)
31.9°C
Coldest Month (avg min)
8.1°C
Monthly Rainfall (mm)
Weather data from BOM station Perth Airport (35 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Thornlie.
- What is the median house price in Thornlie?
- The median house price in Thornlie, WA 6108 is $605,000. The median unit price is $353,000.
- What is the Thornlie postcode?
- Thornlie is in the 6108 postcode, in WA, in the City of Gosnells region.
- Where is Thornlie?
- Thornlie is a suburb of Perth, in WA 6108. It is part of the Greater Perth area, in the City of Gosnells region.
- What is the average rent in Thornlie?
- The median weekly rent for houses is $330, for units it's $330.
- What schools are in Thornlie?
- There are 20 schools serving Thornlie on this page, including Yale Primary School, Australian Islamic College (Thornlie), South Thornlie Primary School.
- How walkable is Thornlie?
- Thornlie has a Walk Score of 18 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near Thornlie?
- Thornlie is close to Langford, Lynwood, Maddington, Canning Vale Dc, Beckenham.
- What is the population of Thornlie?
- The population of Thornlie is approximately 23,665 (2021 Census). The median age is 38.
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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 →
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