Onkaparinga

South Australia · Adelaide - South · 177,379 people · 53 suburbs · 20 postcodes

Onkaparinga at a glance

177,379
Population
#1 of 72 in SA
541
km² area
328/km² density
41.2
Median age
-0.1 vs SA
952
SEIFA IRSAD
#31 of 72 in SA
60
Schools
41 gov, 7 Cath, 12 indep
21.2%
Born overseas
23.4%
Renting

Map shows the Onkaparinga LGA boundary in blue with a marker per suburb. Hover for suburb name, click for details.

Marker colour reflects SEIFA IRSAD decile: ● 1-2 (most disadvantaged), ● 3-4, ● 5-6, ● 7-8, ● 9-10 (most advantaged).

Boundary source: ABS ASGS 2021. Map tiles: OpenStreetMap contributors.

Federal electorate boundaries can be toggled on the map. Boundary source: ABS ASGS 2021 CED boundaries.

Onkaparinga is a metropolitan Local Government Area in South Australia, in the Adelaide region. It covers 53 suburbs across 20 postcodes and an area of 541 km². Onkaparinga has a population of 177,379 , ranking #1 most populous in SA. The most populous suburb is Morphett Vale (24,002 residents).About 21.2% of residents were born overseas and 7.2% speak a language other than English at home.

Who lives here

Age structure

0–14 (17.8%) 15–24 (11.5%) 25–44 (25.1%) 45–64 (25.8%) 65+ (19.9%)
Show counts
0–14 years31,498 (17.8%)
15–24 years20,364 (11.5%)
25–44 years44,495 (25.1%)
45–64 years45,711 (25.8%)
65+ years35,252 (19.9%)
21.2%
Born overseas
7.2%
Speak a language other than English at home
1.9%
First Nations
2.5
Avg household size

How they live

Housing tenure

Owned outright (31.6%) Mortgaged (45.0%) Renting (23.4%)

Dwelling type mix

Separate house (93.3%) Semi/townhouse (5.6%) Flat/apartment (1.1%)
$326
Median weekly rent
$1,468
Median monthly mortgage
40.5%
Households with 0-1 cars
59.5%
Households with 2+ cars

Work and learning

5.7%
Unemployment rate
46,415
In full-time work
31,921
In part-time work

Schools in Onkaparinga

60 schools across Onkaparinga: 68.3% Government, 11.7% Catholic, 20.0% Independent. The SA average is 70.8% / 14.3% / 14.9%. Schools here have a median ICSEA of 1004 (range 867 to 1109). SA median is 999; national mean is 1000.

Sector mix

SA average for comparison
Government Catholic Independent

Type breakdown

Primary (71.7%) Secondary (8.3%) Combined (18.3%) Special (1.7%)

ICSEA range

700 National mean 1000 1300
LGA median 1004 SA median 999LGA range 867 to 1109

ICSEA (Index of Community Socio-Educational Advantage) summarises the socio-economic background of each school's families. Higher values indicate more advantage. Source: ACARA 2025.

All 60 schools in Onkaparinga, sorted by enrolment:

School Sector Type Suburb Students ICSEA
Cardijn College Catholic Combined Noarlunga Downs 2,247 1019
Reynella East College Government Combined Reynella East 1,938 988
Woodcroft College Independent Combined Morphett Vale 1,534 1071
Tatachilla Lutheran College Independent Combined Mclaren Vale 1,103 1068
Wirreanda Secondary School Government Secondary Morphett Vale 915 913
Aberfoyle Park High School Government Secondary Aberfoyle Park 906 1039
Aldinga Payinthi College Government Combined Aldinga 831 954
Seaford Secondary College Government Secondary Seaford 829 962
Christies Beach High School Government Secondary Christie Downs 789 905
IQRA College Independent Combined O'halloran Hill 734 1067
Prescott College Southern Independent Combined Morphett Vale 707 1036
Willunga High School Government Secondary Willunga 693 994
All Saints Catholic Primary School Catholic Primary Seaford 536 1017
McLaren Vale Primary School Government Primary Mclaren Vale 521 1018
Southern Vales Christian College Independent Combined Morphett Vale 503 1038
Coromandel Valley Primary School Government Primary Coromandel Valley 483 1097
Woodcroft Primary School Government Primary Woodcroft 454 1004
Flagstaff Hill Primary School Government Primary Flagstaff Hill 432 1067
Reynella Primary School Government Primary Old Reynella 430 1001
Craigburn Primary School Government Primary Flagstaff Hill 426 1074
Willunga Waldorf School Independent Combined Willunga 390 1072
Aldinga Beach Primary School Government Primary Aldinga 377 959
Emmaus Catholic School Catholic Primary Woodcroft 373 1005
Port Noarlunga Primary School Government Primary Port Noarlunga 370 999
Moana Primary School Government Primary Seaford 369 1018
Seaford Rise Primary School Government Primary Seaford Rise 369 977
Braeview School Government Primary Happy Valley 360 1032
Flaxmill School P-6 Government Primary Morphett Vale 358 950
Willunga Primary School Government Primary Willunga 346 1027
St John The Apostle Parish School Catholic Primary Christies Beach 334 1021
Happy Valley Primary School Government Primary Happy Valley 325 1033
South Port Primary School Government Primary Port Noarlunga South 295 968
Antonio Catholic School Catholic Primary Morphett Vale 277 1008
Pimpala Primary School Government Primary Morphett Vale 254 981
Aberfoyle Hub Primary School Government Primary Aberfoyle Park 241 1030
Coorara Primary School Government Primary Morphett Vale 233 947
Southern Montessori School Independent Combined O'sullivan Beach 230 1095
Hackham East Primary School Government Primary Hackham 217 948
McLaren Flat Primary School Government Primary Mclaren Flat 207 1030
Christie Downs Primary School Government Primary Christie Downs 205 925
Christies Beach Primary School Government Primary Christies Beach 194 889
Calvary Lutheran Primary School Independent Primary Morphett Vale 191 971
Morphett Vale Primary School Government Primary Morphett Vale 182 950
Pilgrim School Independent Primary Aberfoyle Park 161 1109
School of the Nativity Catholic Primary Aberfoyle Park 159 1086
Old Noarlunga Primary School Government Primary Old Noarlunga 155 999
Morphett Vale East School Government Primary Morphett Vale 153 908
Sunrise Christian School Morphett Vale Independent Primary Morphett Vale 151 1068
Thiele Primary School Government Primary Aberfoyle Park 151 1022
Reynella South Primary School Government Primary Reynella 150 969
FAME - Flexible Accredited Meaningful Engagement Catholic Special Christie Downs 137 952
Noarlunga Downs Primary School Government Primary Noarlunga Downs 124 937
Hackham West School Government Primary Hackham West 110 867
Our Saviour Lutheran School Happy Valley Incorporated Independent Primary Aberfoyle Park 98 1065
Clarendon Primary School Government Primary Clarendon 86 1042
O'Sullivan Beach Primary School Government Primary O'sullivan Beach 84 926
Huntfield Heights School P-6 Government Primary Huntfield Heights 80 898
Lonsdale Heights Primary School Government Primary Christie Downs 71 949
OneSchool Global SA Independent Combined Aberfoyle Park 65 983
Kangarilla Primary School Government Primary Kangarilla 30 1018

Source: ACARA School Profiles 2025. ICSEA shown where reported; some schools (notably small primaries) do not publish ICSEA.

SEIFA socio-economic indexes

SEIFA 2021 ranks Australian areas across four dimensions. Scores are population-weighted averages of suburb-level SEIFA scores within Onkaparinga. Higher scores indicate more advantage; the national mean is 1000.

IRSAD

Relative socio-economic advantage and disadvantage

952
Ranked #31 of 72 SA LGAs

IRSD

Relative disadvantage only (lower = more disadvantaged)

988

IER

Economic resources: income, wealth, housing

991

IEO

Education and occupation: qualifications, skill levels

946

Suburbs in Onkaparinga

Onkaparinga contains 53 suburbs and 20 postcodes. Sorted by population.

SuburbPostcodePopulationMedian incomeMedian age
Morphett Vale 5162 24,002 $1,199/wk 40
Happy Valley 5159 11,420 $1,573/wk 42
Woodcroft 5162 11,326 $1,664/wk 42
Aberfoyle Park 5159 11,234 $1,765/wk 42
Aldinga Beach 5173 10,667 $1,297/wk 39
Flagstaff Hill 5159 10,184 $2,080/wk 43
Seaford Rise 5169 6,105 $1,494/wk 39
Christies Beach 5165 5,962 $1,194/wk 39
Christie Downs 5164 5,239 $889/wk 41
Seaford Meadows 5169 5,102 $1,663/wk 31
Reynella 5161 4,836 $1,346/wk 38
Seaford 5169 4,493 $1,254/wk 43
Hackham 5163 4,491 $1,158/wk 40
Coromandel Valley 5051 4,380 $2,241/wk 41
Huntfield Heights 5163 4,199 $1,239/wk 37
Mclaren Vale 5171 4,061 $1,331/wk 54
Noarlunga Downs 5168 4,031 $1,189/wk 39
Hackham West 5163 3,620 $928/wk 41
Old Reynella 5161 3,458 $1,387/wk 42
Moana 5169 3,316 $1,631/wk 40
Port Noarlunga 5167 3,245 $1,369/wk 46
Port Noarlunga South 5167 3,058 $1,530/wk 39
O'Halloran Hill 5158 2,722 $1,558/wk 40
Sellicks Beach 5174 2,705 $1,424/wk 41
Onkaparinga Hills 5163 2,610 $2,078/wk 45
Willunga 5172 2,445 $1,681/wk 47
Reynella East 5161 1,990 $1,215/wk 45
O'Sullivan Beach 5166 1,844 $1,072/wk 44
Port Willunga 5173 1,785 $1,313/wk 44
Mclaren Flat 5171 1,625 $2,129/wk 40
Old Noarlunga 5168 1,531 $1,485/wk 41
Darlington 5047 1,275 $1,601/wk 39
Maslin Beach 5170 1,213 $1,380/wk 46
Seaford Heights 5169 1,079 $2,170/wk 29
Kangarilla 5157 905 $1,860/wk 49
Chandlers Hill 5159 792 $2,654/wk 46
Aldinga 5173 764 $1,102/wk 49
Clarendon 5157 643 $2,065/wk 48
Cherry Gardens 5157 633 $2,016/wk 48
Willunga South 5172 470 $1,983/wk 48
Blewitt Springs 5171 346 $2,050/wk 49
Coromandel East 5157 345 $2,531/wk 50
Whites Valley 5172 313 $1,781/wk 48
Sellicks Hill 5174 299 $1,792/wk 51
Tatachilla 5171 231 $2,075/wk 45
Noarlunga Centre 5168 203 $1,135/wk 40
The Range 5172 159 $2,550/wk 51
Lonsdale 5160 23 $725/wk 48
Christies Beach North 5165
Onkaparinga Heights 5163
O’Halloran Hill 5158
O’Sullivan Beach 5166
Pedler Creek 5171

Postcodes covered

5047, 5051, 5157, 5158, 5159, 5160, 5161, 5162, 5163, 5164, 5165, 5166, 5167, 5168, 5169, 5170, 5171, 5172, 5173, 5174

Compare Onkaparinga with neighbouring LGAs

Side-by-side demographic and socio-economic snapshot of Onkaparinga and its closest neighbouring LGAs.

LGA Population Median age SEIFA IRSAD % renting % overseas-born
Onkaparinga (SA) 177,379 41.2 952 23.4% 21.2%
Marion 94,003 39.4 993 30.9% 29.2%
Alexandrina 28,991 53.2 950 18.5% 16.2%
Mitcham 66,083 42.6 1072 18.5% 23.2%
Adelaide Hills 41,441 44.6 1066 10.9% 16.6%
Mount Barker 39,079 39.2 1003 22.2% 15.1%

Services and amenities

NDIS Providers NDIS provider directory for Onkaparinga Climate & weather Climate data for Morphett Vale

Frequently asked questions about Onkaparinga

What is the population of Onkaparinga?

The 2021 Census recorded 177,379 people living in Onkaparinga, across 53 suburbs.

What suburbs are in Onkaparinga?

Onkaparinga contains 53 suburbs. The most populous are Morphett Vale, Happy Valley, Woodcroft, Aberfoyle Park, Aldinga Beach.See the full list in the Suburbs section above.

What postcodes are in Onkaparinga?

Onkaparinga covers 20 postcodes: 5047, 5051, 5157, 5158, 5159, 5160, 5161, 5162, 5163, 5164, 5165, 5166, 5167, 5168, 5169, 5170, 5171, 5172, 5173, 5174.

How many schools are in Onkaparinga?

Onkaparinga has 60 schools, including 41 government, 7 Catholic, and 12 independent schools (ACARA 2025).

What is the SEIFA score for Onkaparinga?

Onkaparinga has a population-weighted SEIFA IRSAD score of 952, where the national average is 1000. Higher scores indicate more relative advantage.

Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 (IRSD, IRSAD, IER, IEO), ACARA School Profiles 2025, ABS ASGS 2021 LGA boundaries. How this data is sourced.