Aldinga vs Port Willunga

Port Willunga is the younger of the two, with a median age of 44 against 49 in Aldinga. In both, the large majority of households own their home and most homes are detached houses. In Aldinga, about half of households are people living alone. Houses cost more in Aldinga: a median of $954,000, against $850,000 in Port Willunga, though rent is higher in Port Willunga. On these figures, Aldinga tends to suit people living alone.

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

Port Willunga

ahead on 3 of the 6 things we measure here

  • has more separate houses rather than flats (95% vs 65%)
  • carries lower crime risk (66/100 vs 88/100)
  • is already more of a family suburb (55% vs 45%)
  • But Aldinga has more childcare (3 vs 0)

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

First-home buyers

They split

one each way, out of the 4 things we measure here

  • Aldinga has cheaper units ($475,000 vs $875,000)
  • Port Willunga leaves households under less mortgage stress (23% vs 32%)

Weighs house prices, unit prices, land prices, and mortgage stress.

Renters

Aldinga

ahead on the one thing that separates them

  • has cheaper rent ($255/wk vs $328/wk)

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

Commuting to the city

Aldinga

ahead on the one thing that separates them

  • is more walkable (60/100 vs 41/100)

Weighs distance, drive time, rail access, and walkability.

Downsizers and retirees

Aldinga

ahead on 2 of the 5 things we measure here

  • has more units and townhouses to downsize into (35% vs 5%)
  • is more walkable (60/100 vs 41/100)
  • But Port Willunga carries lower crime risk (66/100 vs 88/100)

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

Investors

Aldinga

ahead on the one thing that separates them

  • is growing faster (33.3% vs 9.0%)

Weighs population growth.

Where they sit

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

Aldinga Port Willunga
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.

Aldinga Port Willunga
Walkability 60 / 41
Aldinga — Walkability: 60/100 Port Willunga — Walkability: 41/100
Safety 12 / 34
Aldinga — Safety: 12/100 Port Willunga — Safety: 34/100
Low fire risk 100 / 100
Aldinga — Low fire risk: 100/100 Port Willunga — Low fire risk: 100/100
Low flood risk 69 / 47
Aldinga — Low flood risk: 69/100 Port Willunga — Low flood risk: 47/100

Demographics

Port Willunga has more residents (1,785 vs 764); Port Willunga rents higher ($328/wk vs $255/wk).

Aldinga Port Willunga
Population 764 1,785
+134% vs other
Population trend (2016 → 2021) +33.3% +9.0%
Median age 49 44
Median household income $57,304/yr $68,276/yr
+19% vs other
Median weekly rent $255/wk $328/wk
+29% vs other

Age profile

Share of residents in each band, 2021 Census.

Aldinga Port Willunga
0-4 3.9% / 4.9%
Aldinga — 0-4: 3.9% Port Willunga — 0-4: 4.9%
5-14 13.5% / 13.6%
Aldinga — 5-14: 13.5% Port Willunga — 5-14: 13.6%
15-19 5.6% / 4.8%
Aldinga — 15-19: 5.6% Port Willunga — 15-19: 4.8%
20-24 2.1% / 6.7%
Aldinga — 20-24: 2.1% Port Willunga — 20-24: 6.7%
25-34 7.1% / 9.9%
Aldinga — 25-34: 7.1% Port Willunga — 25-34: 9.9%
35-44 11.1% / 11.8%
Aldinga — 35-44: 11.1% Port Willunga — 35-44: 11.8%
45-54 16.2% / 14.5%
Aldinga — 45-54: 16.2% Port Willunga — 45-54: 14.5%
55-64 15.6% / 14.3%
Aldinga — 55-64: 15.6% Port Willunga — 55-64: 14.3%
65-74 17.5% / 13.0%
Aldinga — 65-74: 17.5% Port Willunga — 65-74: 13.0%
75-84 6.9% / 5.4%
Aldinga — 75-84: 6.9% Port Willunga — 75-84: 5.4%
85+ 0.4% / 1.6%
Aldinga — 85+: 0.4% Port Willunga — 85+: 1.6%

Bars are drawn against the largest share shown (17.5%).

Who lives together

Household composition, 2021 Census.

Aldinga 52.9% lone person
Aldinga — Lone Person: 52.9% Aldinga — Couple Families: 29.8% Aldinga — One Parent Families: 15.1% Aldinga — Group Household: 2.1% Aldinga — Other Families: 0.0%
Port Willunga 39.2% lone person
Port Willunga — Lone Person: 39.2% Port Willunga — Couple Families: 32.6% Port Willunga — One Parent Families: 22.0% Port Willunga — Group Household: 4.6% Port Willunga — Other Families: 1.6%
Lone Person Couple Families One Parent Families Group Household Other Families

Who owns and who rents

Occupied private dwellings by tenure, 2021 Census.

Aldinga 15.5% renting
Aldinga — Owned Outright: 47.2% Aldinga — Mortgage: 37.2% Aldinga — Renting: 15.5%
Port Willunga 23.5% renting
Port Willunga — Owned Outright: 38.5% Port Willunga — Mortgage: 38.0% Port Willunga — Renting: 23.5%
Owned outright Mortgage Renting

Qualifications

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

Aldinga Port Willunga
Certificate III & IV 13.2% / 18.4%
Aldinga — Certificate III & IV: 13.2% Port Willunga — Certificate III & IV: 18.4%
Bachelor Degree 14.1% / 11.8%
Aldinga — Bachelor Degree: 14.1% Port Willunga — Bachelor Degree: 11.8%
Advanced Diploma / Diploma 7.9% / 8.0%
Aldinga — Advanced Diploma / Diploma: 7.9% Port Willunga — Advanced Diploma / Diploma: 8.0%
Postgraduate Degree 5.6% / 2.7%
Aldinga — Postgraduate Degree: 5.6% Port Willunga — Postgraduate Degree: 2.7%
Graduate Diploma / Certificate 3.0% / 2.0%
Aldinga — Graduate Diploma / Certificate: 3.0% Port Willunga — Graduate Diploma / Certificate: 2.0%

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.

Aldinga Port Willunga
England 11.4% / 8.7%
Aldinga — England: 11.4% Port Willunga — England: 8.7%
Germany 1.0% / 0.6%
Aldinga — Germany: 1.0% Port Willunga — Germany: 0.6%
Scotland 0.8% / 0.8%
Aldinga — Scotland: 0.8% Port Willunga — Scotland: 0.8%
New Zealand 0.9% / 0.6%
Aldinga — New Zealand: 0.9% Port Willunga — New Zealand: 0.6%
Netherlands 0.9% / 0.4%
Aldinga — Netherlands: 0.9% Port Willunga — Netherlands: 0.4%
Singapore 0.9% / —
Aldinga — Singapore: 0.9% Port Willunga — Singapore: not among its largest

Bars are drawn against the largest share shown (11.4%).

What people live in

Occupied private dwellings by structure, 2021 Census.

Aldinga 65.2% houses
Aldinga — Houses: 65.2% Aldinga — Townhouses: 16.6% Aldinga — Flats / Apartments: 18.2%
Port Willunga 94.9% houses
Port Willunga — Houses: 94.9% Port Willunga — Townhouses: 3.8% Port Willunga — Flats / Apartments: 1.3%
Houses Townhouses Flats / Apartments

Property market

Aldinga Port Willunga
Median house price $954,500 $850,000
Median unit price $475,000 $875,000
Median land price $780,000 $949,600
Typical days to sell (houses) — 36 days
from 12 sales

Zoning mix

Aldinga has more rural and farming land (82% vs 0%); Port Willunga has more land zoned for conservation (12% vs 0%).

Aldinga Port Willunga
Rural and farming 82% 0%
Residential 10% 51%
Parks and recreation 5% 37%
Environmental 0% 12%
Commercial 2% 0%
Zoning sets what may be built, not what is there today. A single address can sit in a different zone to the suburb around it. Zones as at 2026-09.

Development activity

Aldinga Port Willunga
New dwellings approved 1,367
across Onkaparinga
same for both
Approvals change year on year +58%
same for both

Gross rental yield

Gross — before strata, rates, management, insurance and vacancy. From median advertised rents and median asking prices over the last 6 months. How we calculate.

Aldinga Port Willunga
Houses — 3.6%
$690/wk on $999K
Units —
same for both

Ranking within SA

Aldinga Port Willunga
House price Higher than 27% of SA Higher than 56% of SA
Income Higher than 22% of SA Higher than 38% of SA
Schools —
same for both
Walkability Higher than 84% of SA Higher than 78% of SA
Affordability Higher than 33% of SA Higher than 21% of SA
EV adoption Higher than 69% of SA
same for both
NBN connectivity Higher than 95% of SA Higher than 99% of SA
Rental yield (houses) — Higher than 34% of SA

Liveability

Aldinga is more walkable (60 vs 41); Aldinga scores higher overall (48 vs 38).

Aldinga Port Willunga
Grade C
same for both
Score 48/100 38/100
Socio-economic band mid-range socio-economic
decile 5/10
 below-average income
decile 3/10

Risk profile

Port Willunga carries more flood risk (53 vs 31); Aldinga carries more crime risk (88 vs 66).

Aldinga Port Willunga
Bushfire None
0/100
same for both
Crime High
88/100
 Moderate
66/100
Flood Low
31/100
 Moderate
53/100
Coastal erosion None
0/100
 Low
26/100
Aircraft noise None
0/100
same for both
Industrial facilities nearby 2
within 5 km
same for both

Schools

Aldinga Port Willunga
Inside the suburb 1
same for both
Rated above peers 0
same for both
Rated at peers 0
same for both
Rated below peers 0 1

Schools in Aldinga

  • Cardijn College - Galilee Campus Catholic · Combined

Schools in Port Willunga

  • Aldinga Payinthi College Government · Combined below peers

Amenities in the suburb

Aldinga Port Willunga
Supermarkets 1 0
Cafes & restaurants 3 1
Parks & reserves 1
same for both
Childcare 3 0
GPs 1 0
Pharmacies 1 0
Fuel stations 1 0
Waterways 2 0

Mobility

Aldinga Port Willunga
Walkability score 60/100 41/100
Distance to Adelaide 43.6 km 45.4 km
+4% vs other
Drive time (normal traffic) 42 min 45 min
Public transport score 79/100
Bus
same for both
Peak arrivals per hour 38.0
7-9am + 5-7pm
 33.0
7-9am + 5-7pm
Median peak wait 1 min
scheduled, not actual
same for both
Electric vehicle share 0.8%
postcode 5173
same for both
Rooftop solar per 100 dwellings 67
postcode 5173
same for both

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.

Aldinga Port Willunga
Car (driver) 67.7% / 79.8%
Aldinga — Car (driver): 67.7% Port Willunga — Car (driver): 79.8%
Worked from Home 14.5% / 11.8%
Aldinga — Worked from Home: 14.5% Port Willunga — Worked from Home: 11.8%
Train 6.4% / 2.8%
Aldinga — Train: 6.4% Port Willunga — Train: 2.8%
Walked Only 6.0% / 2.5%
Aldinga — Walked Only: 6.0% Port Willunga — Walked Only: 2.5%
Car (passenger) 3.5% / 2.5%
Aldinga — Car (passenger): 3.5% Port Willunga — Car (passenger): 2.5%

Bars are drawn against the largest share shown (79.8%).

Setting

Aldinga Port Willunga
Elevation 32 m
above sea level, at the suburb centre
 16 m
above sea level, at the suburb centre
Distance to the ocean 2.4 km 254 m

NBN connectivity

Aldinga Port Willunga
Connectivity score 86/100 99/100
Most common technology Fibre to the premises
same for both
Full-fibre (FTTP) share 80%
362 premises
 99%
1,092 premises

Climate

Aldinga Port Willunga
Annual rainfall 786 mm
same for both
Summer max (Jan) —
same for both
Winter min (Jul) —
same for both

Air quality (annual mean)

Aldinga Port Willunga
PM2.5 —
same for both
PM10 19.5 µg/m³
same for both
NO₂ 0.34 pphm
same for both

Council rates

Aldinga Port Willunga
Average residential rate $2,008/yr
same for both
Council Onkaparinga
same for both

Federal electorate

Aldinga Port Willunga
Division Mayo
same for both
Member Rebekha Sharkie
same for both
Party Centre Alliance
same for both

First Home Owner Grant

Aldinga Port Willunga
Grant amount $15,000
same for both
Property price cap —
same for both
Eligibility New
same for both

Tags

Aldinga

Coastal Outer Quiet

Port Willunga

Coastal Large Blocks Outer Quiet

More comparisons

Other comparisons with Aldinga

Aldinga vs Aldinga Beach Aldinga vs Maslin Beach Aldinga vs Whites Valley Aldinga vs Sellicks Hill Aldinga vs Tatachilla

Other comparisons with Port Willunga

Port Willunga vs Aldinga Beach Port Willunga vs Maslin Beach
Full data on Aldinga Full data on Port Willunga
Unlock full address-level data — $29/month

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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