O'halloran Hill vs Flagstaff Hill

O'Halloran Hill is the younger of the two, with a median age of 40 against 43 in Flagstaff Hill. In both, the large majority of households own their home and the large majority of homes are detached houses. In Flagstaff Hill, most households are couple families. Houses cost more in Flagstaff Hill: a median of $1.04 million, against $860,000 in O'Halloran Hill, and rent is higher there too. On these figures, O'Halloran Hill tends to suit people living alone and buyers on a tighter budget, while Flagstaff Hill 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

Flagstaff Hill

ahead on 3 of the 6 things we measure here

  • carries lower crime risk (18/100 vs 65/100)
  • has more childcare (5 vs 2)
  • is already more of a family suburb (73% vs 63%)
  • 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

O'Halloran Hill

ahead on the one thing that separates them

  • has cheaper houses ($860,150 vs $1,035,500)

Weighs house prices and mortgage stress.

Renters

O'Halloran Hill

ahead on the one thing that separates them

  • has cheaper rent ($350/wk vs $385/wk)

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

Commuting to the city

Flagstaff Hill

ahead on the one thing that separates them

  • is more walkable (62/100 vs 47/100)

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

Downsizers and retirees

Flagstaff Hill

ahead on 2 of the 5 things we measure here

  • carries lower crime risk (18/100 vs 65/100)
  • is more walkable (62/100 vs 47/100)
  • But O'Halloran Hill has more GPs (3 vs 1)

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

Investors

O'Halloran Hill

ahead on the one thing that separates them

  • returns a higher gross yield on houses (3.8% vs 3.1%)

Weighs house yield and population growth.

Where they sit

O'halloran Hill and Flagstaff Hill 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 Flagstaff Hill
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 Flagstaff Hill
Walkability 47 / 62
O'halloran Hill — Walkability: 47/100 Flagstaff Hill — Walkability: 62/100
Safety 35 / 82
O'halloran Hill — Safety: 35/100 Flagstaff Hill — Safety: 82/100
Low fire risk 60 / 78
O'halloran Hill — Low fire risk: 60/100 Flagstaff Hill — Low fire risk: 78/100
Low flood risk 89 / 64
O'halloran Hill — Low flood risk: 89/100 Flagstaff Hill — Low flood risk: 64/100

Demographics

Flagstaff Hill has more residents (10,184 vs 2,722); Flagstaff Hill has higher household incomes ($108,160 vs $81,016).

O'halloran Hill Flagstaff Hill
Population 2,722 10,184
+274% vs other
Population trend (2016 → 2021) +2.4%
same for both
Median age 40 43
Median household income $81,016/yr $108,160/yr
+34% vs other
Median weekly rent $350/wk $385/wk
+10% vs other

Age profile

Share of residents in each band, 2021 Census.

O'halloran Hill Flagstaff Hill
0-4 5.6% / 5.0%
O'halloran Hill — 0-4: 5.6% Flagstaff Hill — 0-4: 5.0%
5-14 12.5% / 12.4%
O'halloran Hill — 5-14: 12.5% Flagstaff Hill — 5-14: 12.4%
15-19 4.7% / 6.3%
O'halloran Hill — 15-19: 4.7% Flagstaff Hill — 15-19: 6.3%
20-24 5.2% / 5.8%
O'halloran Hill — 20-24: 5.2% Flagstaff Hill — 20-24: 5.8%
25-34 14.8% / 9.7%
O'halloran Hill — 25-34: 14.8% Flagstaff Hill — 25-34: 9.7%
35-44 14.6% / 13.0%
O'halloran Hill — 35-44: 14.6% Flagstaff Hill — 35-44: 13.0%
45-54 12.3% / 14.2%
O'halloran Hill — 45-54: 12.3% Flagstaff Hill — 45-54: 14.2%
55-64 11.6% / 13.8%
O'halloran Hill — 55-64: 11.6% Flagstaff Hill — 55-64: 13.8%
65-74 11.0% / 12.5%
O'halloran Hill — 65-74: 11.0% Flagstaff Hill — 65-74: 12.5%
75-84 7.0% / 5.8%
O'halloran Hill — 75-84: 7.0% Flagstaff Hill — 75-84: 5.8%
85+ 0.8% / 1.5%
O'halloran Hill — 85+: 0.8% Flagstaff Hill — 85+: 1.5%

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%
Flagstaff Hill 60.4% couple families
Flagstaff Hill — Couple Families: 60.4% Flagstaff Hill — Lone Person: 23.4% Flagstaff Hill — One Parent Families: 12.9% Flagstaff Hill — Group Household: 2.2% Flagstaff Hill — Other Families: 1.1%
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%
Flagstaff Hill 10.5% renting
Flagstaff Hill — Owned Outright: 39.0% Flagstaff Hill — Mortgage: 50.5% Flagstaff Hill — Renting: 10.5%
Owned outright Mortgage Renting

Qualifications

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

O'halloran Hill Flagstaff Hill
Certificate III & IV 19.2% / 15.3%
O'halloran Hill — Certificate III & IV: 19.2% Flagstaff Hill — Certificate III & IV: 15.3%
Bachelor Degree 12.7% / 15.9%
O'halloran Hill — Bachelor Degree: 12.7% Flagstaff Hill — Bachelor Degree: 15.9%
Advanced Diploma / Diploma 8.7% / 9.6%
O'halloran Hill — Advanced Diploma / Diploma: 8.7% Flagstaff Hill — Advanced Diploma / Diploma: 9.6%
Postgraduate Degree 3.1% / 5.1%
O'halloran Hill — Postgraduate Degree: 3.1% Flagstaff Hill — Postgraduate Degree: 5.1%
Graduate Diploma / Certificate 1.9% / 2.7%
O'halloran Hill — Graduate Diploma / Certificate: 1.9% Flagstaff Hill — Graduate Diploma / Certificate: 2.7%

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

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.

O'halloran Hill Flagstaff Hill
England 7.5% / 9.8%
O'halloran Hill — England: 7.5% Flagstaff Hill — England: 9.8%
China 0.6% / 1.8%
O'halloran Hill — China: 0.6% Flagstaff Hill — China: 1.8%
India 0.8% / 1.4%
O'halloran Hill — India: 0.8% Flagstaff Hill — India: 1.4%
South Africa 0.7% / 1.5%
O'halloran Hill — South Africa: 0.7% Flagstaff Hill — South Africa: 1.5%
New Zealand 1.0% / 1.0%
O'halloran Hill — New Zealand: 1.0% Flagstaff Hill — New Zealand: 1.0%
Scotland 1.0% / 1.0%
O'halloran Hill — Scotland: 1.0% Flagstaff Hill — Scotland: 1.0%

Bars are drawn against the largest share shown (9.8%).

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%
Flagstaff Hill 96.5% houses
Flagstaff Hill — Houses: 96.5% Flagstaff Hill — Townhouses: 1.6% Flagstaff Hill — Flats / Apartments: 1.9%
Houses Townhouses Flats / Apartments

Property market

O'halloran Hill Flagstaff Hill
Median house price $860,150 $1,035,500
Median unit price $720,000 —
Median land price — $585,000
Typical days to sell (houses) 12 days
from 23 sales
 15 days
from 91 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 Flagstaff Hill
3 bed $857K / $938K
O'halloran Hill — 3 bed: $857K (31 sales) Flagstaff Hill — 3 bed: $938K (88 sales)

31 vs 88 sales

4 bed $968K / $1.11M
O'halloran Hill — 4 bed: $968K (9 sales) Flagstaff Hill — 4 bed: $1.11M (75 sales)

9 vs 75 sales

Zoning mix

O'Halloran Hill has more land zoned for conservation (78% vs 29%).

O'halloran Hill Flagstaff Hill
Environmental 78% 29%
Residential 18% 68%
Rural and farming 3% 0%
Parks and recreation 0% 2%
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 Flagstaff Hill
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 Flagstaff Hill
Houses 3.8%
$638/wk on $870K
 3.1%
$660/wk on $1.11M
Units —
same for both

Ranking within SA

O'halloran Hill Flagstaff Hill
House price Higher than 24% of SA Higher than 48% of SA
Income Higher than 55% of SA Higher than 85% of SA
Schools —
same for both
Walkability Higher than 80% of SA Higher than 84% of SA
Affordability Higher than 79% of SA Higher than 85% of SA
EV adoption Higher than 67% of SA Higher than 77% of SA
NBN connectivity Higher than 80% of SA Higher than 82% of SA
Rental yield (houses) Higher than 43% of SA Higher than 17% of SA

Liveability

Flagstaff Hill scores higher overall (72 vs 52); Flagstaff Hill is more walkable (62 vs 47).

O'halloran Hill Flagstaff Hill
Grade B A
Score 52/100 72/100
Socio-economic band mid-range socio-economic
decile 6/10
 very advantaged area
decile 9/10

Risk profile

O'Halloran Hill carries more crime risk (65 vs 18); Flagstaff Hill carries more flood risk (36 vs 11).

O'halloran Hill Flagstaff Hill
Bushfire Moderate
40/100
 Low
22/100
Crime Moderate
65/100
 Low
18/100
Flood Low
11/100
 Low
36/100
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 Flagstaff Hill
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, 3.1 km
Full-time students aged 15–24 1.7% 2.7%

Schools in O'halloran Hill

  • IQRA College Independent · Combined above peers

Schools in Flagstaff Hill

  • Craigburn Primary School Government · Primary at peers
  • Flagstaff Hill Primary School Government · Primary below peers

Amenities in the suburb

O'halloran Hill Flagstaff Hill
Supermarkets 1
same for both
Cafes & restaurants 4 1
Parks & reserves 6 8
Childcare 2 5
GPs 3 1
Pharmacies 1 0
Banks & Bank@Post 1
same for both
Fuel stations 2 0
Waterways 0 2

Mobility

O'halloran Hill Flagstaff Hill
Walkability score 47/100 62/100
Distance to Adelaide 17.9 km
+2% vs other
 17.6 km
Drive time (normal traffic) 24 min
same for both
Public transport score 79/100
Bus
same for both
Peak arrivals per hour 129.5
7-9am + 5-7pm
 155.8
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 Flagstaff Hill
Car (driver) 77.4% / 77.5%
O'halloran Hill — Car (driver): 77.4% Flagstaff Hill — Car (driver): 77.5%
Worked from Home 11.1% / 12.9%
O'halloran Hill — Worked from Home: 11.1% Flagstaff Hill — Worked from Home: 12.9%
Car (passenger) 4.6% / 3.9%
O'halloran Hill — Car (passenger): 4.6% Flagstaff Hill — Car (passenger): 3.9%
Bus 3.6% / 3.0%
O'halloran Hill — Bus: 3.6% Flagstaff Hill — Bus: 3.0%
Train 2.2% / 1.7%
O'halloran Hill — Train: 2.2% Flagstaff Hill — Train: 1.7%

Bars are drawn against the largest share shown (77.5%).

Setting

O'halloran Hill Flagstaff Hill
Elevation 189 m
above sea level, at the suburb centre
 194 m
above sea level, at the suburb centre
Distance to the ocean 4.1 km 6.5 km

NBN connectivity

O'halloran Hill Flagstaff Hill
Connectivity score 67/100 70/100
Most common technology Fibre to the node
same for both
Full-fibre (FTTP) share 40%
1,262 premises
 46%
3,940 premises

Climate

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

Federal electorate

O'halloran Hill Flagstaff Hill
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 Flagstaff Hill
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

Flagstaff Hill

Large Blocks Middle-Ring Parks

More comparisons

Other comparisons with O'halloran Hill

O'halloran Hill vs Happy Valley 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 Flagstaff Hill

Flagstaff Hill vs Happy Valley Flagstaff Hill vs Aberfoyle Park Flagstaff Hill vs Coromandel Valley Flagstaff Hill vs Craigburn Farm Flagstaff Hill vs Bellevue Heights Flagstaff Hill vs Bedford Park
Full data on O'halloran Hill Full data on Flagstaff Hill
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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