South Australia · Suburb Profile

Underdale SA — Suburb Profile

Population, median income, rent prices, housing costs and demographics for Underdale, South Australia. ABS Census 2021.

The population of Underdale SA is 2,429 according to the 2021 Census. The median personal income in Underdale is $830 per week ($43,160 per year). Median rent in Underdale is $310 per week ($1,343 per month). Underdale has a median age of 38 years, equal to the national median. Underdale has a population density of 2353.9 people per km².

The most common overseas birthplace in Underdale is India. The most common religion is No Religion (40% of residents). After English, the most spoken language is Greek. The median monthly mortgage repayment in Underdale is $1,786.

There were 76 recorded offences in Underdale in 2025-26, a rate of 31 offences per 1,000 people. The most common offence category was theft (41 offences).

Underdale Map

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Underdale Population

residents (Census 2021)

Underdale Median Income & Rent

💰

Median Income

$830/wk

$43,160 per year

#3098 of 14,663

🏠

Median Rent

$310/wk

$1,343 per month

#4328 of 14,663

👤

Median Age

38years

Same as than national median

🏡

Mortgage

$1,786/mo

Avg household size: 2.3 · 0.8 per bedroom

Underdale Demographics

Gender Split

Male 50.0% (1,213) Female 50.0% (1,213)

Population Density

2353.9

people per km²

2,429 people · 1.0 km²

Households

2.3

Avg household size

0.8

Persons per bedroom

$2,133

Family income/wk

Underdale Age Distribution

0-4

5-9

10-14

15-19

20-24

25-29

30-34

35-39

40-44

45-49

50-54

55-59

60-64

65-69

70-74

75-79

80-84

85+

♂ Male ♀ Female

Source: ABS Census 2021 — Suburb & Locality (SAL)

Underdale Housing Tenure

🏠

Owned outright

48.9% 294 dwellings

🏦

Owned with mortgage

51.1% 307 dwellings

Source: ABS Census 2021 — Suburb & Locality (SAL)

Underdale Country of Birth

Australia

79.8%

India

9.3%

England

3.8%

China

2.5%

Greece

1.4%

Cambodia

0.9%

Egypt

0.8%

Afghanistan

0.6%

Canada

0.4%

Germany

0.4%

Source: ABS Census 2021 G09 — Country of Birth by SAL

Underdale Religion

No Religion

40.1%

Catholic

26.3%

Eastern Orthodox

10.6%

Hinduism

5.1%

Anglican

4.7%

Not stated

4.4%

Uniting Church

4.4%

Other Religions Tot

4.4%

Source: ABS Census 2021 G14 — Religion by SAL

Underdale Education Level

Year 12 or equivalent

71.5%

Year 11 or equivalent

13.9%

Year 10 or equivalent

12.4%

Year 9 or equivalent

2.3%

Source: ABS Census 2021 G16 — Highest Year of School by SAL

Underdale Languages Spoken at Home

Greek

21.6%

IAL Punjabi

15.5%

Other

14.6%

Italian

14.3%

Mandarin

14.0%

SAL Tot

8.5%

Cantonese

6.7%

Arabic

4.9%

Source: ABS Census 2021 G13 — Language Spoken at Home by SAL

Underdale Employment

💼

Employed full-time

38.6% 747 people

⏰

Employed part-time

25.2% 488 people

🔍

Unemployed

3.8% 74 people

🏠

Not in labour force

32.3% 624 people

Source: ABS Census 2021 G46 — Labour Force Status by SAL

Underdale Qualifications

Bachelor Degree

38.0%

Certificate III/IV

23.9%

Advanced Diploma/Diploma

17.2%

Postgraduate Degree

15.1%

Graduate Diploma/Certificate

4.2%

Certificate I/II

1.6%

Source: ABS Census 2021 G49 — Non-School Qualification by SAL

Underdale Occupation

Professionals

31.3%

Managers

14.1%

Clerical & Administrative

13.5%

Community & Personal Service

13.3%

Technicians & Trade Workers

12.8%

Sales Workers

5.4%

Labourers

5.1%

Machinery Operators & Drivers

4.6%

Source: ABS Census 2021 G51 — Industry of Employment by Occupation

Underdale Field of Study

Management & Commerce

24.5%

Engineering

14.5%

Society & Culture

13.8%

Health

12.3%

Education

9.5%

Information Technology

5.5%

Architecture & Building

5.3%

Food, Hospitality & Personal Services

5.0%

Natural & Physical Sciences

4.3%

Creative Arts

3.9%

Agriculture & Environment

1.4%

Source: ABS Census 2021 G51 — Field of Study by SAL

Underdale Dwelling Types

Separate house

78.9%

Semi-detached (1 storey)

14.5%

Semi-detached (2+ storey)

6.5%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Underdale Weekly Household Income

Nil/Negative/wk

1.4%

$1-$149/wk

1.1%

$150-$299/wk

1.7%

$300-$399/wk

3.9%

$400-$499/wk

7.0%

$500-$649/wk

6.2%

$650-$799/wk

5.9%

$800-$999/wk

5.6%

$1,000-$1,249/wk

6.7%

$1,250-$1,499/wk

8.7%

$1,500-$1,749/wk

5.6%

$1,750-$1,999/wk

5.3%

$2,000-$2,499/wk

12.1%

$2,500-$2,999/wk

7.4%

$3,000-$3,499/wk

6.4%

$3,500-$3,999/wk

3.0%

$4,000+/wk

12.2%

Source: ABS Census 2021 G33 — Household Income by SAL

Underdale Marital Status

💍

Married

45.9% 947

↔️

Separated

2.8% 57

📋

Divorced

8.2% 170

🕊️

Widowed

5.2% 108

👤

Never married

37.8% 779

Source: ABS Census 2021 G05 — Marital Status by SAL

Underdale Ancestry

English

20.4%

Australian

19.5%

Other

13.1%

Italian

11.6%

Greek

7.1%

Chinese

5.7%

Irish

5.4%

Indian

5.2%

German

4.8%

Scottish

4.4%

Dutch

1.4%

Aboriginal Australianralian

1.3%

Source: ABS Census 2021 G08 — Ancestry by SAL

Underdale School & University Attendance

Primary — Government

24.2%

Vocational Education

18.6%

Secondary — Government

12.8%

Secondary — Catholic

12.3%

Primary — Catholic

11.6%

Pre-school

9.9%

Primary — Other Non-Govt

6.3%

Secondary — Other Non-Govt

4.1%

Source: ABS Census 2021 G15 — Type of Educational Institution by SAL

Underdale Need for Assistance

♿

Needs assistance

4.3% 204

✅

No need for assistance

95.7% 4,530

Source: ABS Census 2021 G18 — Core Activity Need for Assistance by SAL

Underdale Volunteering

🤝

Volunteer

15.4% 307

—

Not a volunteer

84.6% 1,684

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Underdale Monthly Mortgage Repayments

$0-$299/mo

7.5%

$300-$449/mo

2.9%

$450-$599/mo

2.9%

$600-$799/mo

4.6%

$800-$999/mo

4.6%

$1,000-$1,399/mo

16.8%

$1,400-$1,799/mo

15.4%

$1,800-$2,399/mo

22.1%

$2,400-$2,999/mo

11.4%

$3,000-$3,999/mo

11.8%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Underdale How People Get to Work

Car (driver)

70.7%

Did not go to work

9.8%

Bus

6.2%

Car (passenger)

4.3%

Walked only

3.2%

Bicycle

2.9%

Other

1.0%

Taxi/Rideshare

0.7%

Motorbike/Scooter

0.7%

Tram/Light Rail

0.4%

Source: ABS Census 2021 G62 — Method of Travel to Work by SAL

Underdale Car Ownership

0 vehicles

10.5%

1 vehicle

36.7%

2 vehicles

36.9%

3 vehicles

10.9%

4+ vehicles

5.0%

Source: ABS Census 2021 G34 — Motor Vehicles per Dwelling by SAL

Underdale Number of Bedrooms

1 bedroom

3.1%

2 bedrooms

30.2%

3 bedrooms

46.9%

4 bedrooms

15.6%

5 bedrooms

3.5%

6+ bedrooms

0.6%

Source: ABS Census 2021 G41 — Number of Bedrooms by SAL

Underdale Population Mobility

13.7%

moved in the last year

44.4%

moved in the last 5 years

5.4%

unemployment rate (Census)

66.9%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Underdale Indigenous Population

1.8%

Aboriginal & Torres Strait Islander

Indigenous residents

4,657

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Underdale Long-term Health Conditions

Mental health

168

Asthma

Arthritis

Diabetes

Heart disease

Lung condition

Cancer

Stroke

Kidney disease

Dementia

Source: ABS Census 2021 G19 — Long-term Health Conditions by SAL

Underdale Personal Weekly Income Distribution

$0 or less/wk

10.0%

$1-$149/wk

3.5%

$150-$299/wk

6.6%

$300-$399/wk

4.0%

$400-$499/wk

3.2%

$500-$649/wk

4.1%

$650-$799/wk

8.3%

$800-$999/wk

10.5%

$1,000-$1,249/wk

13.7%

$1,250-$1,499/wk

8.8%

$1,500-$1,749/wk

7.4%

$1,750-$1,999/wk

6.1%

$2,000-$2,999/wk

8.5%

$3,000-$3,499/wk

2.1%

$3,500+/wk

3.2%

Source: ABS Census 2021 G17 — Personal Income by SAL

Underdale Family Structure

Couple — children under 15

40.9%

Couple — no children

28.9%

Couple — no children under 15

17.9%

One parent — no children under 15

7.0%

One parent — children under 15

5.3%

Source: ABS Census 2021 G29 — Family Composition by SAL

Underdale Military Service

🎖️

Current ADF — Regular

0.2% 5

🏅

Previously served

1.3% 27

👤

Never served

98.4% 1,970

Source: ABS Census 2021 G22 — ADF Service by SAL

Underdale Unpaid Carers

🤲

Provided unpaid assistance

12.0% 239

—

Did not provide

88.0% 1,747

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Underdale Children Ever Born

No children

40.8%

1 child

14.4%

2 children

30.4%

3 children

10.9%

4 children

3.6%

Source: ABS Census 2021 G28 — Children Ever Born by SAL

Underdale When Migrants Arrived

Before 1951

1951–1960

1961–1970

1971–1980

1981–1990

1991–2000

2001–2010

132

2011–2015

127

2016

2017

2018

2019

2020

Source: ABS Census 2021 G10 — Year of Arrival by SAL

Underdale Unpaid Domestic Work

Less than 5 hours

21.9%

5–14 hours

30.3%

15–29 hours

11.3%

30+ hours

7.2%

Did not do domestic work

29.3%

Source: ABS Census 2021 G24 — Unpaid Domestic Work by SAL

Underdale Household Size

1 person

32.0%

2 persons

32.3%

3 persons

15.0%

4 persons

16.1%

5 persons

2.7%

6+ persons

2.0%

Source: ABS Census 2021 G35 — Household Size by SAL

Underdale Where Residents Moved From

Same address

2,025

Moved from SA

224

Moved — same area (SA2)

Moved from VIC

Moved from QLD

Moved from overseas

Moved from NSW

Moved from ACT

Source: ABS Census 2021 G44 — Address 1 Year Ago by SAL

Underdale Family Blending

Intact family — no other children

93.0%

Step family — no other children

4.6%

Intact family — other children present

1.4%

Blended family — no other children

1.1%

Source: ABS Census 2021 G31 — Family Blending by SAL

Underdale Crime Statistics

Reported offences in 2025-26 — 76 total

Theft

Assault

Break & Enter

Property Damage

Other Against Person

Fraud

Offence trend by year:

2021

2022

2023

2024

2025

Source: SA Government Open Data — data.sa.gov.au

Underdale Schools

schools nearby

government

1035

avg ICSEA score

10,545

total students

Richmond Primary School Government

Primary · U, R-6 · 362 students

1122

ICSEA

Torrensville Primary School Government

Primary · U, R-6 · 380 students

1099

ICSEA

Tenison Woods Catholic Primary School Catholic

Primary · R-6 · 262 students

1084

ICSEA

St Francis School Catholic

Primary · R-6 · 457 students

1075

ICSEA

Kilkenny Primary School Government

Primary · U, R-6 · 450 students

1069

ICSEA

Lockleys North Primary School Government

Primary · R-6 · 422 students

1069

ICSEA

Our Lady of La Vang School Catholic

Combined · U · 70 students

1066

ICSEA

Brooklyn Park Primary School Government

Primary · U, R-6 · 118 students

1066

ICSEA

St Joseph's School Catholic

Primary · R-6 · 223 students

1063

ICSEA

Allenby Gardens Primary School Government

Primary · R-6 · 392 students

1062

ICSEA

St John Bosco School Catholic

Primary · R-6 · 252 students

1054

ICSEA

Kidman Park Primary School Government

Primary · U, R-6 · 485 students

1053

ICSEA

Cowandilla Primary School Government

Primary · U, R-6 · 341 students

1051

ICSEA

Nazareth Catholic College Catholic

Secondary · R-12 · 2,576 students

1049

ICSEA

St George College Independent

Combined · R-12 · 350 students

1046

ICSEA

Showing 15 of 30 schools

Source: ACARA — Australian Curriculum, Assessment and Reporting Authority, 2025. ICSEA = Index of Community Socio-Educational Advantage (national average 1000).

View all schools in Underdale with map →

Underdale Rent Prices & Affordability

20%

of income

Affordable

Household Income $1,578/wk

Median Rent $310/wk

Rent-to-Income 19.6%

Rent is under 25% of household income — generally considered affordable.

If you earn X in Underdale

Your weekly income

≈ $6,838/month

Median rent $310/wk

Left after rent $1,268/wk

Rent share 19.6%

Cheaper alternatives with similar incomes

Payneham

Income: $874/wk Rent: $300/wk Save: $10/wk

Hectorville

Income: $717/wk Rent: $300/wk Save: $10/wk

Ceduna

Income: $762/wk Rent: $200/wk Save: $110/wk

Rosewater

Income: $684/wk Rent: $260/wk Save: $50/wk

Edwardstown

Income: $744/wk Rent: $275/wk Save: $35/wk

Mallala

Income: $704/wk Rent: $278/wk Save: $32/wk

Park Holme

Income: $702/wk Rent: $280/wk Save: $30/wk

Glandore

Income: $799/wk Rent: $290/wk Save: $20/wk

Underdale vs State & National Average

Nearby Suburbs in SA

Echunga

Pop: 1,219 Income: $887/wk Rent: $320/wk

Croydon (SA)

Pop: 1,220 Income: $811/wk Rent: $310/wk

Quorn

Pop: 1,232 Income: $617/wk Rent: $200/wk

Joslin

Pop: 1,243 Income: $943/wk Rent: $310/wk

Royston Park

Pop: 1,246 Income: $959/wk Rent: $330/wk

Robe

Pop: 1,252 Income: $740/wk Rent: $250/wk

Compare Underdale

Underdale vs Echunga →Underdale vs Croydon (SA) →Underdale vs Quorn →Underdale vs Joslin →

Frequently Asked Questions About Underdale

What is the population of Underdale SA?

The population of Underdale SA is 2,429 according to the ABS Census 2021.The suburb has a population density of 2353.9 people per km².Underdale is ranked #2,758 out of 14,663 suburbs by population.

What is the median income in Underdale?

The median personal income in Underdale SA is $830 per week, or $43,160 per year.The median household income is $1,578 per week.Family income is $2,133 per week.Underdale is ranked #3,098 by income out of 14,663 Australian suburbs.

How much is rent in Underdale?

Median rent in Underdale SA is $310 per week ($1,343 per month).Rent represents 19.6% of household income, which is considered affordable.Underdale ranks #4,328 out of 14,663 suburbs by rent.

What are mortgage repayments in Underdale?

The median monthly mortgage repayment in Underdale SA is $1,786. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Underdale?

The median age in Underdale SA is 38 years.This is equal to the national median age of 38 years.

Is Underdale a good suburb to live in?

Underdale is a suburb in South Australia with a population of 2,429.The median income is $830/wk, which is above the SA average of $763/wk.Rent affordability is rated as affordable (19.6% of household income). See the full suburb profile above for detailed statistics.

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Data: Australian Bureau of Statistics, Census of Population and Housing 2021. SA2 area: 41488. All dollar figures in AUD.