O'halloran Hill vs Happy Valley

In both, the large majority of households own their home and the large majority of homes are detached houses. In Happy Valley, about half of households are couple families. O'Halloran Hill is closer to the city centre: 17.9 km, against 23.1 km.

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

Happy Valley

ahead on 3 of the 6 things we measure here

  • has more childcare (6 vs 2)
  • carries lower crime risk (31/100 vs 65/100)
  • has more parks and reserves (10 vs 6)
  • But O'Halloran Hill has more schools rated above their peers (1 vs 0)

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

First-home buyers

Too close to call

Nothing among the 3 things we measure here separates them by enough to be worth acting on.

Weighs house prices, unit prices, and mortgage stress.

Renters

Too close to call

Nothing among the 3 things we measure here separates them by enough to be worth acting on.

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

Commuting to the city

O'Halloran Hill

ahead on 2 of the 4 things we measure here

  • has a shorter drive in (24 min vs 56 min)
  • sits closer to the CBD (17.9 km vs 23.1 km)

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

Downsizers and retirees

Happy Valley

ahead on the one thing that separates them

  • carries lower crime risk (31/100 vs 65/100)

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

Investors

Too close to call

Nothing among the 2 things we measure here separates them by enough to be worth acting on.

Weighs house yield and population growth.

Where they sit

O'halloran Hill and Happy Valley drawn to the same scale. Both outlines are shown together, so the map answers whether they share a border and how their areas compare.

O'halloran Hill Happy Valley
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.

O'halloran Hill Happy Valley
Walkability 47 / 41
O'halloran Hill — Walkability: 47/100 Happy Valley — Walkability: 41/100
Safety 35 / 69
O'halloran Hill — Safety: 35/100 Happy Valley — Safety: 69/100
Low fire risk 60 / 100
O'halloran Hill — Low fire risk: 60/100 Happy Valley — Low fire risk: 100/100
Low flood risk 89 / 63
O'halloran Hill — Low flood risk: 89/100 Happy Valley — Low flood risk: 63/100

Demographics

Happy Valley has more residents (11,420 vs 2,722); Happy Valley skews older (42 vs 40).

O'halloran Hill Happy Valley
Population 2,722 11,420
+320% vs other
Population trend (2016 → 2021) +2.4% +1.8%
Median age 40 42
Median household income $81,016/yr $81,796/yr
Median weekly rent $350/wk $360/wk
+3% vs other

Age profile

Share of residents in each band, 2021 Census.

O'halloran Hill Happy Valley
0-4 5.6% / 5.6%
O'halloran Hill — 0-4: 5.6% Happy Valley — 0-4: 5.6%
5-14 12.5% / 11.5%
O'halloran Hill — 5-14: 12.5% Happy Valley — 5-14: 11.5%
15-19 4.7% / 5.9%
O'halloran Hill — 15-19: 4.7% Happy Valley — 15-19: 5.9%
20-24 5.2% / 4.8%
O'halloran Hill — 20-24: 5.2% Happy Valley — 20-24: 4.8%
25-34 14.8% / 11.9%
O'halloran Hill — 25-34: 14.8% Happy Valley — 25-34: 11.9%
35-44 14.6% / 13.2%
O'halloran Hill — 35-44: 14.6% Happy Valley — 35-44: 13.2%
45-54 12.3% / 12.2%
O'halloran Hill — 45-54: 12.3% Happy Valley — 45-54: 12.2%
55-64 11.6% / 12.4%
O'halloran Hill — 55-64: 11.6% Happy Valley — 55-64: 12.4%
65-74 11.0% / 13.5%
O'halloran Hill — 65-74: 11.0% Happy Valley — 65-74: 13.5%
75-84 7.0% / 6.3%
O'halloran Hill — 75-84: 7.0% Happy Valley — 75-84: 6.3%
85+ 0.8% / 2.8%
O'halloran Hill — 85+: 0.8% Happy Valley — 85+: 2.8%

Bars are drawn against the largest share shown (14.8%).

Who lives together

Household composition, 2021 Census.

O'halloran Hill 44.1% couple families
O'halloran Hill — Couple Families: 44.1% O'halloran Hill — Lone Person: 32.3% O'halloran Hill — One Parent Families: 19.0% O'halloran Hill — Group Household: 3.4% O'halloran Hill — Other Families: 1.1%
Happy Valley 46.1% couple families
Happy Valley — Couple Families: 46.1% Happy Valley — Lone Person: 34.7% Happy Valley — One Parent Families: 16.4% Happy Valley — Group Household: 1.9% Happy Valley — Other Families: 1.0%
Couple Families Lone Person One Parent Families Group Household Other Families

Who owns and who rents

Occupied private dwellings by tenure, 2021 Census.

O'halloran Hill 18.2% renting
O'halloran Hill — Owned Outright: 33.3% O'halloran Hill — Mortgage: 48.5% O'halloran Hill — Renting: 18.2%
Happy Valley 11.6% renting
Happy Valley — Owned Outright: 37.1% Happy Valley — Mortgage: 51.3% Happy Valley — Renting: 11.6%
Owned outright Mortgage Renting

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.

O'halloran Hill Happy Valley
England 7.5% / 8.3%
O'halloran Hill — England: 7.5% Happy Valley — England: 8.3%
Scotland 1.0% / 0.8%
O'halloran Hill — Scotland: 1.0% Happy Valley — Scotland: 0.8%
New Zealand 1.0% / 0.7%
O'halloran Hill — New Zealand: 1.0% Happy Valley — New Zealand: 0.7%
South Africa 0.7% / 0.8%
O'halloran Hill — South Africa: 0.7% Happy Valley — South Africa: 0.8%
India 0.8% / 0.6%
O'halloran Hill — India: 0.8% Happy Valley — India: 0.6%

Bars are drawn against the largest share shown (8.3%).

Qualifications

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

O'halloran Hill Happy Valley
Certificate III & IV 19.2% / 18.6%
O'halloran Hill — Certificate III & IV: 19.2% Happy Valley — Certificate III & IV: 18.6%
Bachelor Degree 12.7% / 11.2%
O'halloran Hill — Bachelor Degree: 12.7% Happy Valley — Bachelor Degree: 11.2%
Advanced Diploma / Diploma 8.7% / 8.9%
O'halloran Hill — Advanced Diploma / Diploma: 8.7% Happy Valley — Advanced Diploma / Diploma: 8.9%
Postgraduate Degree 3.1% / 2.5%
O'halloran Hill — Postgraduate Degree: 3.1% Happy Valley — Postgraduate Degree: 2.5%
Graduate Diploma / Certificate 1.9% / 2.0%
O'halloran Hill — Graduate Diploma / Certificate: 1.9% Happy Valley — Graduate Diploma / Certificate: 2.0%

Bars are drawn against the largest share shown (19.2%).

What people live in

Occupied private dwellings by structure, 2021 Census.

O'halloran Hill 91.5% houses
O'halloran Hill — Houses: 91.5% O'halloran Hill — Townhouses: 8.1% O'halloran Hill — Flats / Apartments: 0.4%
Happy Valley 89.9% houses
Happy Valley — Houses: 89.9% Happy Valley — Townhouses: 10.0% Happy Valley — Flats / Apartments: 0.1%
Houses Townhouses Flats / Apartments

Property market

O'halloran Hill Happy Valley
Median house price $860,150 $870,000
Median unit price $720,000 $665,000
Median land price — $520,000
Typical days to sell (houses) 12 days
from 23 sales
 16 days
from 90 sales

House price by bedroom count

Only bed counts both suburbs published enough sales for. Sale counts are shown because the buckets differ in depth.

O'halloran Hill Happy Valley
3 bed $857K / $836K
O'halloran Hill — 3 bed: $857K (31 sales) Happy Valley — 3 bed: $836K (122 sales)

31 vs 122 sales

4 bed $968K / $936K
O'halloran Hill — 4 bed: $968K (9 sales) Happy Valley — 4 bed: $936K (60 sales)

9 vs 60 sales

Zoning mix

O'Halloran Hill has more land zoned for conservation (78% vs 1%).

O'halloran Hill Happy Valley
Environmental 78% 1%
Parks and recreation 0% 51%
Residential 18% 46%
Rural and farming 3% 1%
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

O'halloran Hill Happy Valley
New dwellings approved 809
across Marion
 1,367
across Onkaparinga
Approvals change year on year -31% +58%

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.

O'halloran Hill Happy Valley
Houses 3.8%
$638/wk on $870K
 4.0%
$675/wk on $885K
Units —
same for both

Ranking within SA

O'halloran Hill Happy Valley
House price Higher than 24% of SA Higher than 32% of SA
Income Higher than 55% of SA Higher than 57% of SA
Schools —
same for both
Walkability Higher than 80% of SA Higher than 78% of SA
Affordability Higher than 79% of SA Higher than 76% of SA
EV adoption Higher than 67% of SA Higher than 77% of SA
NBN connectivity Higher than 80% of SA Higher than 85% of SA
Rental yield (houses) Higher than 43% of SA Higher than 54% of SA

Liveability

Happy Valley scores higher overall (61 vs 52).

O'halloran Hill Happy Valley
Grade B
same for both
Score 52/100 61/100
Socio-economic band mid-range socio-economic
decile 6/10
same for both

Risk profile

O'Halloran Hill carries more bushfire risk (40 vs 0); Happy Valley carries more flood risk (37 vs 11).

O'halloran Hill Happy Valley
Bushfire Moderate
40/100
 None
0/100
Crime Moderate
65/100
 Low
31/100
Flood Low
11/100
 Low
37/100
Coastal erosion None
0/100
same for both
Aircraft noise None
0/100
same for both
Industrial facilities nearby 3
within 5 km
same for both

Schools

O'halloran Hill Happy Valley
Inside the suburb 1 2
Rated above peers 1 0
Rated at peers 0 1
Rated below peers 0 1
Universities within 10 km 2
Bedford Park, 4.0 km
 2
Bedford Park, 5.9 km
Full-time students aged 15–24 1.7% 1.8%

Schools in O'halloran Hill

  • IQRA College Independent · Combined above peers

Schools in Happy Valley

  • Happy Valley Primary School Government · Primary at peers
  • Braeview School Government · Primary below peers

Amenities in the suburb

O'halloran Hill Happy Valley
Supermarkets 1
same for both
Cafes & restaurants 4 2
Parks & reserves 6 10
Childcare 2 6
GPs 3 2
Pharmacies 1
same for both
Banks & Bank@Post 1
same for both
Fuel stations 2 0
Waterways 0 5

Mobility

Happy Valley sits further from the CBD (23.1 km vs 17.9 km).

O'halloran Hill Happy Valley
Walkability score 47/100 41/100
Distance to Adelaide 17.9 km 23.1 km
+29% vs other
Drive time (normal traffic) 24 min 56 min
Public transport score 79/100
Bus
same for both
Peak arrivals per hour 129.5
7-9am + 5-7pm
 237.2
7-9am + 5-7pm
Median peak wait 0 min
scheduled, not actual
same for both
Electric vehicle share 0.7%
postcode 5158
 1.0%
postcode 5159
Rooftop solar per 100 dwellings 74
postcode 5158
 70
postcode 5159

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.

O'halloran Hill Happy Valley
Car (driver) 77.4% / 80.1%
O'halloran Hill — Car (driver): 77.4% Happy Valley — Car (driver): 80.1%
Worked from Home 11.1% / 10.4%
O'halloran Hill — Worked from Home: 11.1% Happy Valley — Worked from Home: 10.4%
Car (passenger) 4.6% / 3.8%
O'halloran Hill — Car (passenger): 4.6% Happy Valley — Car (passenger): 3.8%
Bus 3.6% / 3.1%
O'halloran Hill — Bus: 3.6% Happy Valley — Bus: 3.1%
Train 2.2% / 1.4%
O'halloran Hill — Train: 2.2% Happy Valley — Train: 1.4%

Bars are drawn against the largest share shown (80.1%).

Setting

O'halloran Hill Happy Valley
Elevation 189 m
above sea level, at the suburb centre
 147 m
above sea level, at the suburb centre
Distance to the ocean 4.1 km 6.9 km

NBN connectivity

O'halloran Hill Happy Valley
Connectivity score 67/100 74/100
Most common technology Fibre to the node Fibre to the premises
Full-fibre (FTTP) share 40%
1,262 premises
 45%
4,948 premises

Climate

O'halloran Hill Happy Valley
Annual rainfall 394 mm
same for both
Summer max (Jan) 28.1°C
same for both
Winter min (Jul) 7.8°C
same for both

Air quality (annual mean)

O'halloran Hill Happy Valley
PM2.5 —
same for both
PM10 19.5 µg/m³
same for both
NO₂ 0.34 pphm
same for both

Council rates

O'halloran Hill Happy Valley
Average residential rate $1,782/yr $2,008/yr
Council Marion Onkaparinga

Federal electorate

O'halloran Hill Happy Valley
Division Kingston
same for both
Member Amanda Rishworth
same for both
Party Australian Labor Party
same for both

First Home Owner Grant

O'halloran Hill Happy Valley
Grant amount $15,000
same for both
Property price cap —
same for both
Eligibility New
same for both

Tags

O'halloran Hill

Acreage Middle-Ring Quiet

Happy Valley

Large Blocks Middle-Ring River

More comparisons

Other comparisons with O'halloran Hill

O'halloran Hill vs Flagstaff Hill O'halloran Hill vs Trott Park O'halloran Hill vs Seaview Downs O'halloran Hill vs Seacombe Heights O'halloran Hill vs Darlington

Other comparisons with Happy Valley

Happy Valley vs Woodcroft Happy Valley vs Aberfoyle Park Happy Valley vs Flagstaff Hill Happy Valley vs Old Reynella Happy Valley vs Trott Park Happy Valley vs Reynella East
Full data on O'halloran Hill Full data on Happy Valley
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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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