Onkaparinga Hills vs Blewitt Springs

Onkaparinga Hills is the younger of the two, with a median age of 45 against 49 in Blewitt Springs. In both, the large majority of households own their home, the large majority of homes are detached houses, and most households are couple families. Houses cost more in Blewitt Springs: a median of $1.35 million, against $988,000 in Onkaparinga Hills, though rent is higher in Onkaparinga Hills. Onkaparinga Hills is closer to the city centre: 27.2 km, against 44.3 km. On these figures, Onkaparinga Hills tends to suit buyers on a tighter budget.

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

Onkaparinga Hills

ahead on 3 of the 6 things we measure here

  • has more parks and reserves (8 vs 3)
  • carries lower crime risk (21/100 vs 34/100)
  • is already more of a family suburb (79% vs 66%)

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

First-home buyers

Onkaparinga Hills

ahead on the one thing that separates them

  • has cheaper houses ($988,000 vs $1,350,000)

Weighs house prices and mortgage stress.

Renters

Blewitt Springs

ahead on 2 of the 3 things we measure here

  • has cheaper rent ($205/wk vs $385/wk)
  • leaves renters under less rental stress (10% vs 18%)

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

Commuting to the city

Onkaparinga Hills

ahead on 2 of the 3 things we measure here

  • sits closer to the CBD (27.2 km vs 44.3 km)
  • has a shorter drive in (32 min vs 46 min)
  • But Blewitt Springs is more walkable (14/100 vs 0/100)

Weighs distance, drive time, and walkability.

Downsizers and retirees

Blewitt Springs

ahead on 2 of the 4 things we measure here

  • is more walkable (14/100 vs 0/100)
  • has more residents already 65 and over (23% vs 18%)
  • But Onkaparinga Hills carries lower crime risk (21/100 vs 34/100)

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

Investors

Too close to call

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

Weighs population growth.

Where they sit

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

Onkaparinga Hills Blewitt Springs
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.

Onkaparinga Hills Blewitt Springs
Walkability 0 / 14
Onkaparinga Hills — Walkability: 0/100 Blewitt Springs — Walkability: 14/100
Safety 79 / 66
Onkaparinga Hills — Safety: 79/100 Blewitt Springs — Safety: 66/100
Low fire risk 57 / 57
Onkaparinga Hills — Low fire risk: 57/100 Blewitt Springs — Low fire risk: 57/100

Demographics

Onkaparinga Hills has more residents (2,610 vs 346); Onkaparinga Hills rents higher ($385/wk vs $205/wk).

Onkaparinga Hills Blewitt Springs
Population 2,610
+87% vs other
 346
Population trend (2016 → 2021) +3.2% +5.2%
Median age 45 49
Median household income $108,056/yr
+1% vs other
 $106,600/yr
Median weekly rent $385/wk
+47% vs other
 $205/wk

Age profile

Share of residents in each band, 2021 Census.

Onkaparinga Hills Blewitt Springs
0-4 3.9% / 2.6%
Onkaparinga Hills — 0-4: 3.9% Blewitt Springs — 0-4: 2.6%
5-14 12.5% / 15.0%
Onkaparinga Hills — 5-14: 12.5% Blewitt Springs — 5-14: 15.0%
15-19 7.6% / 6.6%
Onkaparinga Hills — 15-19: 7.6% Blewitt Springs — 15-19: 6.6%
20-24 5.6% / 5.2%
Onkaparinga Hills — 20-24: 5.6% Blewitt Springs — 20-24: 5.2%
25-34 9.1% / 5.8%
Onkaparinga Hills — 25-34: 9.1% Blewitt Springs — 25-34: 5.8%
35-44 10.7% / 10.1%
Onkaparinga Hills — 35-44: 10.7% Blewitt Springs — 35-44: 10.1%
45-54 15.7% / 15.6%
Onkaparinga Hills — 45-54: 15.7% Blewitt Springs — 45-54: 15.6%
55-64 16.9% / 17.1%
Onkaparinga Hills — 55-64: 16.9% Blewitt Springs — 55-64: 17.1%
65-74 12.1% / 15.3%
Onkaparinga Hills — 65-74: 12.1% Blewitt Springs — 65-74: 15.3%
75-84 5.4% / 6.4%
Onkaparinga Hills — 75-84: 5.4% Blewitt Springs — 75-84: 6.4%
85+ 0.3% / 1.2%
Onkaparinga Hills — 85+: 0.3% Blewitt Springs — 85+: 1.2%

Bars are drawn against the largest share shown (17.1%).

Who lives together

Household composition, 2021 Census.

Onkaparinga Hills 66.0% couple families
Onkaparinga Hills — Couple Families: 66.0% Onkaparinga Hills — Lone Person: 17.7% Onkaparinga Hills — One Parent Families: 13.3% Onkaparinga Hills — Group Household: 3.0%
Blewitt Springs 58.1% couple families
Blewitt Springs — Couple Families: 58.1% Blewitt Springs — Lone Person: 29.7% Blewitt Springs — One Parent Families: 8.1% Blewitt Springs — Group Household: 4.1%
Couple Families Lone Person One Parent Families Group Household

Who owns and who rents

Occupied private dwellings by tenure, 2021 Census.

Onkaparinga Hills 4.5% renting
Onkaparinga Hills — Owned Outright: 40.3% Onkaparinga Hills — Mortgage: 55.2% Onkaparinga Hills — Renting: 4.5%
Blewitt Springs 12.6% renting
Blewitt Springs — Owned Outright: 39.5% Blewitt Springs — Mortgage: 47.9% Blewitt Springs — Renting: 12.6%
Owned outright Mortgage Renting

Qualifications

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

Onkaparinga Hills Blewitt Springs
Certificate III & IV 22.2% / 20.8%
Onkaparinga Hills — Certificate III & IV: 22.2% Blewitt Springs — Certificate III & IV: 20.8%
Bachelor Degree 8.6% / 11.3%
Onkaparinga Hills — Bachelor Degree: 8.6% Blewitt Springs — Bachelor Degree: 11.3%
Advanced Diploma / Diploma 9.5% / 9.2%
Onkaparinga Hills — Advanced Diploma / Diploma: 9.5% Blewitt Springs — Advanced Diploma / Diploma: 9.2%
Postgraduate Degree 2.3% / 4.0%
Onkaparinga Hills — Postgraduate Degree: 2.3% Blewitt Springs — Postgraduate Degree: 4.0%
Graduate Diploma / Certificate 1.7% / 2.6%
Onkaparinga Hills — Graduate Diploma / Certificate: 1.7% Blewitt Springs — Graduate Diploma / Certificate: 2.6%

Bars are drawn against the largest share shown (22.2%).

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.

Onkaparinga Hills Blewitt Springs
England 10.4% / 9.5%
Onkaparinga Hills — England: 10.4% Blewitt Springs — England: 9.5%
Germany 1.0% / 2.0%
Onkaparinga Hills — Germany: 1.0% Blewitt Springs — Germany: 2.0%
Netherlands 0.8% / 1.2%
Onkaparinga Hills — Netherlands: 0.8% Blewitt Springs — Netherlands: 1.2%
Scotland 0.8% / 0.9%
Onkaparinga Hills — Scotland: 0.8% Blewitt Springs — Scotland: 0.9%
New Zealand 0.5% / 0.9%
Onkaparinga Hills — New Zealand: 0.5% Blewitt Springs — New Zealand: 0.9%
Malaysia — / 1.2%
Onkaparinga Hills — Malaysia: not among its largest Blewitt Springs — Malaysia: 1.2%

Bars are drawn against the largest share shown (10.4%).

What people live in

Occupied private dwellings by structure, 2021 Census.

Onkaparinga Hills 99.2% houses
Onkaparinga Hills — Houses: 99.2% Onkaparinga Hills — Townhouses: 0.6% Onkaparinga Hills — Flats / Apartments: 0.2%
Blewitt Springs 100.0% houses
Blewitt Springs — Houses: 100.0% Blewitt Springs — Townhouses: 0.0% Blewitt Springs — Flats / Apartments: 0.0%
Houses Townhouses Flats / Apartments

Property market

Onkaparinga Hills Blewitt Springs
Median house price $988,000 $1,350,000
Median unit price —
same for both
Median land price —
same for both
Typical days to sell (houses) 22 days
from 20 sales
 167 days
from 3 sales

Zoning mix

Blewitt Springs has more rural and farming land (59% vs 1%); Onkaparinga Hills has more land zoned for conservation (95% vs 41%).

Onkaparinga Hills Blewitt Springs
Environmental 95% 41%
Rural and farming 1% 59%
Residential 5% 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

Onkaparinga Hills Blewitt Springs
New dwellings approved 1,367
across Onkaparinga
same for both
Approvals change year on year +58%
same for both

Ranking within SA

Onkaparinga Hills Blewitt Springs
House price Higher than 40% of SA —
Income Higher than 85% of SA Higher than 84% of SA
Schools —
same for both
Walkability Higher than 8% of SA Higher than 68% of SA
Affordability Higher than 89% of SA —
EV adoption Higher than 50% of SA Higher than 68% of SA
NBN connectivity Higher than 81% of SA Higher than 61% of SA

Liveability

Blewitt Springs is more walkable (14 vs 0).

Onkaparinga Hills Blewitt Springs
Grade B —
Score 54/100 —
Socio-economic band advantaged area
decile 7/10
 advantaged area
decile 8/10

Risk profile

Blewitt Springs carries more crime risk (34 vs 21).

Onkaparinga Hills Blewitt Springs
Bushfire Moderate
43/100
same for both
Crime Low
21/100
 Low
34/100
Flood —
same for both
Coastal erosion None
0/100
same for both
Aircraft noise None
0/100
same for both
Industrial facilities nearby 1
within 5 km
 7
within 5 km

Schools

Onkaparinga Hills Blewitt Springs
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

Onkaparinga Hills Blewitt Springs
Parks & reserves 8 3
Waterways 1 0

Mobility

Blewitt Springs sits further from the CBD (44.3 km vs 27.2 km).

Onkaparinga Hills Blewitt Springs
Walkability score 0/100 14/100
Distance to Adelaide 27.2 km 44.3 km
+63% vs other
Drive time (normal traffic) 32 min 46 min
Electric vehicle share 0.5%
postcode 5163
 0.7%
postcode 5171
Rooftop solar per 100 dwellings 67
postcode 5163
 90
postcode 5171

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.

Onkaparinga Hills Blewitt Springs
Car (driver) 81.4% / 72.9%
Onkaparinga Hills — Car (driver): 81.4% Blewitt Springs — Car (driver): 72.9%
Worked from Home 10.8% / 25.2%
Onkaparinga Hills — Worked from Home: 10.8% Blewitt Springs — Worked from Home: 25.2%
Car (passenger) 3.9% / —
Onkaparinga Hills — Car (passenger): 3.9% Blewitt Springs — Car (passenger): not among its largest
Walked Only 0.4% / 1.9%
Onkaparinga Hills — Walked Only: 0.4% Blewitt Springs — Walked Only: 1.9%
Bus 1.6% / —
Onkaparinga Hills — Bus: 1.6% Blewitt Springs — Bus: not among its largest
Train 1.1% / —
Onkaparinga Hills — Train: 1.1% Blewitt Springs — Train: not among its largest

Bars are drawn against the largest share shown (81.4%).

Setting

Onkaparinga Hills Blewitt Springs
Elevation 234 m
above sea level, at the suburb centre
 159 m
above sea level, at the suburb centre
Distance to the ocean 8.8 km 11.2 km

NBN connectivity

Onkaparinga Hills Blewitt Springs
Connectivity score 68/100 30/100
Most common technology Fibre to the premises Fixed wireless
Full-fibre (FTTP) share 45%
953 premises
 0%
145 premises

Climate

Onkaparinga Hills Blewitt Springs
Annual rainfall 394 mm 969 mm
Summer max (Jan) 28.1°C 23.8°C
Winter min (Jul) 7.8°C 5.4°C

Air quality (annual mean)

Onkaparinga Hills Blewitt Springs
PM2.5 —
same for both
PM10 19.5 µg/m³
same for both
NO₂ 0.34 pphm
same for both

Council rates

Onkaparinga Hills Blewitt Springs
Average residential rate $2,008/yr
same for both
Council Onkaparinga
same for both

Federal electorate

Onkaparinga Hills Blewitt Springs
Division Kingston Mayo
Member Amanda Rishworth Rebekha Sharkie
Party Australian Labor Party Centre Alliance

First Home Owner Grant

Onkaparinga Hills Blewitt Springs
Grant amount $15,000
same for both
Property price cap —
same for both
Eligibility New
same for both

Tags

Onkaparinga Hills

Acreage Outer

Blewitt Springs

Outer

More comparisons

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Other comparisons with Blewitt Springs

Blewitt Springs vs McLaren Vale Blewitt Springs vs McLaren Flat Blewitt Springs vs Kangarilla Blewitt Springs vs Clarendon
Full data on Onkaparinga Hills Full data on Blewitt Springs
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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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