Oldbury vs Mardella

Mardella is the younger of the two, with a median age of 45 against 50 in Oldbury. In both, the large majority of households own their home and the large majority of homes are detached houses. In Mardella, most households are couple families. Oldbury is closer to the city centre: 44.8 km, against 52.6 km. On these figures, Oldbury tends to suit older residents, while Mardella suits couples.

Which one suits you?

There is no overall winner — the suburb that suits a family with school-age kids is routinely the wrong one for someone commuting into the city. So each of these answers its own question, against a checklist you can see, using the same figures in the tables below.

Families with school-age kids

Mardella

ahead on 2 of the 6 things we measure here

  • carries lower crime risk (47/100 vs 72/100)
  • is already more of a family suburb (76% vs 54%)

Weighs schools, house stock, crime, parks, childcare, and who already lives there.

First-home buyers

Too close to call

Nothing among the 1 things we measure here separates them by enough to be worth acting on.

Weighs mortgage stress.

Renters

Oldbury

ahead on the one thing that separates them

  • has cheaper rent ($300/wk vs $380/wk)

Weighs rent, rental stress, and how much is for rent.

Commuting to the city

Oldbury

ahead on the one thing that separates them

  • sits closer to the CBD (44.8 km vs 52.6 km)

Weighs distance, drive time, and walkability.

Downsizers and retirees

They split

one each way, out of the 5 things we measure here

  • Oldbury has more residents already 65 and over (26% vs 16%)
  • Mardella carries lower crime risk (47/100 vs 72/100)

Weighs smaller dwellings, who already lives there, GPs, walkability, and crime.

Investors

Mardella

ahead on the one thing that separates them

  • is growing faster (-7.1% vs -12.4%)

Weighs population growth.

Where they sit

Oldbury and Mardella drawn to the same scale. Both outlines are shown together, so the map answers whether they share a border and how their areas compare.

Oldbury Mardella
Hides rows where both suburbs match

Bars start at zero. Scores, risks and rankings are drawn against their full 0–100 range; other rows are drawn in proportion to the larger of the two.

Side by side, out of 100

Risks are inverted — shown as safety and low exposure — so a longer bar always means better.

Oldbury Mardella
Walkability 0 / 0
Oldbury — Walkability: 0/100 Mardella — Walkability: 0/100
Safety 28 / 53
Oldbury — Safety: 28/100 Mardella — Safety: 53/100
Low fire risk 83 / 48
Oldbury — Low fire risk: 83/100 Mardella — Low fire risk: 48/100
Low flood risk 9 / 27
Oldbury — Low flood risk: 9/100 Mardella — Low flood risk: 27/100

Demographics

Mardella has more residents (446 vs 296); Mardella rents higher ($380/wk vs $300/wk).

Oldbury Mardella
Population 296 446
+51% vs other
Population trend (2016 → 2021) -12.4% -7.1%
Median age 50 45
Median household income $100,256/yr $118,976/yr
+19% vs other
Median weekly rent $300/wk $380/wk
+27% vs other

Age profile

Share of residents in each band, 2021 Census.

Oldbury Mardella
0-4 1.0% / 4.3%
Oldbury — 0-4: 1.0% Mardella — 0-4: 4.3%
5-14 10.5% / 11.9%
Oldbury — 5-14: 10.5% Mardella — 5-14: 11.9%
15-19 4.1% / 7.4%
Oldbury — 15-19: 4.1% Mardella — 15-19: 7.4%
20-24 7.1% / 6.7%
Oldbury — 20-24: 7.1% Mardella — 20-24: 6.7%
25-34 8.4% / 6.7%
Oldbury — 25-34: 8.4% Mardella — 25-34: 6.7%
35-44 9.8% / 10.1%
Oldbury — 35-44: 9.8% Mardella — 35-44: 10.1%
45-54 16.2% / 23.8%
Oldbury — 45-54: 16.2% Mardella — 45-54: 23.8%
55-64 17.2% / 13.0%
Oldbury — 55-64: 17.2% Mardella — 55-64: 13.0%
65-74 15.2% / 9.9%
Oldbury — 65-74: 15.2% Mardella — 65-74: 9.9%
75-84 7.4% / 4.0%
Oldbury — 75-84: 7.4% Mardella — 75-84: 4.0%
85+ 3.0% / 1.6%
Oldbury — 85+: 3.0% Mardella — 85+: 1.6%

Bars are drawn against the largest share shown (23.8%).

Who lives together

Household composition, 2021 Census.

Oldbury 44.7% couple families
Oldbury — Couple Families: 44.7% Oldbury — Lone Person: 30.3% Oldbury — One Parent Families: 9.2% Oldbury — Group Household: 10.5% Oldbury — Other Families: 5.3%
Mardella 62.1% couple families
Mardella — Couple Families: 62.1% Mardella — Lone Person: 24.3% Mardella — One Parent Families: 13.6% Mardella — Group Household: 0.0% Mardella — Other Families: 0.0%
Couple Families Lone Person One Parent Families Group Household Other Families

Who owns and who rents

Occupied private dwellings by tenure, 2021 Census.

Oldbury 22.6% renting
Oldbury — Owned Outright: 43.0% Oldbury — Mortgage: 34.4% Oldbury — Renting: 22.6%
Mardella 13.9% renting
Mardella — Owned Outright: 35.0% Mardella — Mortgage: 51.1% Mardella — Renting: 13.9%
Owned outright Mortgage Renting

Qualifications

Highest non-school qualification, residents 15+, 2021 Census.

Oldbury Mardella
Certificate III & IV 17.9% / 18.4%
Oldbury — Certificate III & IV: 17.9% Mardella — Certificate III & IV: 18.4%
Bachelor Degree 8.1% / 10.1%
Oldbury — Bachelor Degree: 8.1% Mardella — Bachelor Degree: 10.1%
Advanced Diploma / Diploma 6.8% / 7.6%
Oldbury — Advanced Diploma / Diploma: 6.8% Mardella — Advanced Diploma / Diploma: 7.6%
Postgraduate Degree 1.0% / 3.1%
Oldbury — Postgraduate Degree: 1.0% Mardella — Postgraduate Degree: 3.1%
Graduate Diploma / Certificate 1.0% / 2.5%
Oldbury — Graduate Diploma / Certificate: 1.0% Mardella — Graduate Diploma / Certificate: 2.5%

Bars are drawn against the largest share shown (18.4%).

Where residents were born

Largest overseas birthplaces, as a share of all residents, 2021 Census. A dash means that country is not among the suburb's own eight largest.

Oldbury Mardella
England 9.8% / 10.8%
Oldbury — England: 9.8% Mardella — England: 10.8%
New Zealand 1.0% / 1.6%
Oldbury — New Zealand: 1.0% Mardella — New Zealand: 1.6%
Scotland 1.0% / 1.6%
Oldbury — Scotland: 1.0% Mardella — Scotland: 1.6%
Netherlands 1.0% / 1.6%
Oldbury — Netherlands: 1.0% Mardella — Netherlands: 1.6%
South Africa 1.0% / 0.9%
Oldbury — South Africa: 1.0% Mardella — South Africa: 0.9%
Italy 1.7% / —
Oldbury — Italy: 1.7% Mardella — Italy: not among its largest
France 1.7% / —
Oldbury — France: 1.7% Mardella — France: not among its largest
Canada — / 1.6%
Oldbury — Canada: not among its largest Mardella — Canada: 1.6%

Bars are drawn against the largest share shown (10.8%).

What people live in

Occupied private dwellings by structure, 2021 Census.

Oldbury 98.1% houses
Oldbury — Houses: 98.1% Oldbury — Flats / Apartments: 1.9%
Mardella 95.3% houses
Mardella — Houses: 95.3% Mardella — Flats / Apartments: 4.7%
Houses Flats / Apartments

Property market

Oldbury Mardella
Median house price — $1,550,000
Median unit price —
same for both
Median land price — $1,550,000
Typical days to sell (houses) — 246 days
from 3 sales

Development activity

Oldbury Mardella
New dwellings approved 859
across Serpentine-Jarrahdale
same for both
Approvals change year on year +104%
same for both

Ranking within WA

Oldbury Mardella
House price —
same for both
Income Higher than 67% of WA Higher than 85% of WA
Schools —
same for both
Walkability Higher than 48% of WA Higher than 8% of WA
Affordability —
same for both
EV adoption Higher than 61% of WA Higher than 63% of WA
NBN connectivity Higher than 62% of WA Higher than 65% of WA

Liveability

Oldbury Mardella
Grade —
same for both
Score —
same for both
Socio-economic band mid-range socio-economic
decile 6/10
 advantaged area
decile 8/10

Risk profile

Mardella carries more bushfire risk (52 vs 17); Oldbury carries more crime risk (72 vs 47).

Oldbury Mardella
Bushfire Low
17/100
 Moderate
52/100
Crime High
72/100
 Moderate
47/100
Flood High
91/100
 High
73/100
Coastal erosion None
0/100
same for both
Aircraft noise None
0/100
same for both
Industrial facilities nearby 4
within 5 km
 0
within 5 km

Schools

Oldbury Mardella
Inside the suburb 0
same for both
Rated above peers 0
same for both
Rated at peers 0
same for both
Rated below peers 0
same for both

Amenities in the suburb

Oldbury Mardella
Parks & reserves 1
same for both
Waterways 0 1

Mobility

Mardella sits further from the CBD (52.6 km vs 44.8 km).

Oldbury Mardella
Walkability score 0/100
same for both
Distance to Perth 44.8 km 52.6 km
+17% vs other
Drive time (normal traffic) 44 min 47 min
Electric vehicle share 0.6%
postcode 6121
 0.6%
postcode 6125
Rooftop solar per 100 dwellings 98
postcode 6121
 87
postcode 6125

How people get to work

Method of travel on census day 2021 — which fell during COVID restrictions, so working from home is inflated and every travel mode understated.

Oldbury Mardella
Car (driver) 60.5% / 72.0%
Oldbury — Car (driver): 60.5% Mardella — Car (driver): 72.0%
Worked from Home 21.7% / 19.4%
Oldbury — Worked from Home: 21.7% Mardella — Worked from Home: 19.4%
Walked Only 10.9% / 1.4%
Oldbury — Walked Only: 10.9% Mardella — Walked Only: 1.4%
Car (passenger) 7.0% / 2.8%
Oldbury — Car (passenger): 7.0% Mardella — Car (passenger): 2.8%
Train — / 2.8%
Oldbury — Train: not among its largest Mardella — Train: 2.8%
Bus — / 1.4%
Oldbury — Bus: not among its largest Mardella — Bus: 1.4%

Bars are drawn against the largest share shown (72.0%).

Setting

Oldbury Mardella
Elevation 10 m
above sea level, at the suburb centre
 16 m
above sea level, at the suburb centre
Distance to the ocean 15.2 km 17.8 km

NBN connectivity

Oldbury Mardella
Connectivity score 30/100 40/100
Most common technology Fixed wireless
same for both
Full-fibre (FTTP) share 0%
146 premises
 10%
191 premises

Climate

Oldbury Mardella
Annual rainfall 745 mm 1,013 mm
Summer max (Jan) 31.4°C 30.0°C
Winter min (Jul) 7.6°C 7.0°C

Council rates

Oldbury Mardella
Average residential rate $2,810/yr
same for both
Council Serpentine-Jarrahdale
same for both

Federal electorate

Oldbury Mardella
Division Canning
same for both
Member Andrew Hastie
same for both
Party Liberal
same for both

First Home Owner Grant

Oldbury Mardella
Grant amount $10,000
same for both
Property price cap $800,000
same for both
Eligibility New
same for both

Tags

Oldbury

Outer Retirees

Mardella

Outer

More comparisons

Other comparisons with Oldbury

Oldbury vs Baldivis Oldbury vs Wellard Oldbury vs Oakford Oldbury vs Casuarina Oldbury vs Mundijong Oldbury vs Cardup

Other comparisons with Mardella

Mardella vs Baldivis Mardella vs Serpentine Mardella vs Mundijong Mardella vs Jarrahdale Mardella vs Hopeland
Full data on Oldbury Full data on Mardella
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Information shown is provided as-is from Australian government and commercial data sources.
Always verify with the relevant authority before making property decisions.
See Data Sources and How We Calculate for details.

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