South Australia · Suburb Profile

Williamstown SA — Suburb Profile

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

The population of Williamstown SA is 2,981 according to the 2021 Census. The median personal income in Williamstown is $813 per week ($42,276 per year). Median rent in Williamstown is $300 per week ($1,300 per month). Williamstown has a median age of 42 years, older than the national median of 38. Williamstown has a population density of 41.8 people per km².

The most common overseas birthplace in Williamstown is England. The most common religion is No Religion (60% of residents). After English, the most spoken language is Other. The median monthly mortgage repayment in Williamstown is $1,500.

There were 25 recorded offences in Williamstown in 2025-26, a rate of 8 offences per 1,000 people. The most common offence category was theft (7 offences).

Williamstown Map

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Williamstown Population

residents (Census 2021)

Williamstown Median Income & Rent

💰

Median Income

$813/wk

$42,276 per year

#3378 of 14,663

🏠

Median Rent

$300/wk

$1,300 per month

#4529 of 14,663

👤

Median Age

42years

4 years older than national median

🏡

Mortgage

$1,500/mo

Avg household size: 2.7 · 0.8 per bedroom

Williamstown Demographics

Gender Split

Male 50.1% (1,493) Female 49.9% (1,489)

Population Density

41.8

people per km²

2,981 people · 71.3 km²

Households

2.7

Avg household size

0.8

Persons per bedroom

$2,063

Family income/wk

Williamstown 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)

Williamstown Housing Tenure

🏠

Owned outright

37.7% 344 dwellings

🏦

Owned with mortgage

62.3% 569 dwellings

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

Williamstown Country of Birth

Australia

89.1%

England

9.8%

Germany

0.7%

Canada

0.3%

France

0.2%

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

Williamstown Religion

No Religion

59.7%

Anglican

9.6%

Catholic

7.9%

Not stated

6.8%

Lutheran

6.1%

Uniting Church

6.0%

Christian (other)

2.8%

Church Christ

1.1%

Source: ABS Census 2021 G14 — Religion by SAL

Williamstown Education Level

Year 12 or equivalent

52.7%

Year 11 or equivalent

23.4%

Year 10 or equivalent

18.8%

Year 9 or equivalent

5.1%

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

Williamstown Languages Spoken at Home

Other

36.4%

German

31.8%

French

18.2%

Italian

13.6%

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

Williamstown Employment

💼

Employed full-time

41.4% 912 people

⏰

Employed part-time

24.3% 534 people

🔍

Unemployed

2.3% 51 people

🏠

Not in labour force

32.0% 705 people

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

Williamstown Qualifications

Certificate III/IV

47.9%

Bachelor Degree

22.0%

Advanced Diploma/Diploma

18.7%

Graduate Diploma/Certificate

4.4%

Postgraduate Degree

3.6%

Certificate I/II

3.5%

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

Williamstown Occupation

Professionals

23.5%

Technicians & Trade Workers

20.4%

Managers

15.1%

Community & Personal Service

13.4%

Clerical & Administrative

11.0%

Labourers

7.0%

Sales Workers

4.7%

Machinery Operators & Drivers

4.7%

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

Williamstown Field of Study

Engineering

22.3%

Management & Commerce

15.8%

Society & Culture

14.6%

Education

11.4%

Health

11.1%

Architecture & Building

8.7%

Food, Hospitality & Personal Services

5.4%

Agriculture & Environment

4.6%

Natural & Physical Sciences

2.7%

Creative Arts

2.4%

Information Technology

0.9%

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

Williamstown Dwelling Types

Separate house

99.1%

Semi-detached (1 storey)

0.9%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Williamstown Weekly Household Income

Nil/Negative/wk

0.9%

$1-$149/wk

0.5%

$150-$299/wk

0.8%

$300-$399/wk

0.6%

$400-$499/wk

4.7%

$500-$649/wk

4.7%

$650-$799/wk

6.3%

$800-$999/wk

6.5%

$1,000-$1,249/wk

8.9%

$1,250-$1,499/wk

7.5%

$1,500-$1,749/wk

6.4%

$1,750-$1,999/wk

7.1%

$2,000-$2,499/wk

12.9%

$2,500-$2,999/wk

9.6%

$3,000-$3,499/wk

7.4%

$3,500-$3,999/wk

6.0%

$4,000+/wk

9.2%

Source: ABS Census 2021 G33 — Household Income by SAL

Williamstown Marital Status

💍

Married

54.8% 1,309

↔️

Separated

3.1% 73

📋

Divorced

7.9% 189

🕊️

Widowed

4.6% 111

👤

Never married

29.6% 706

Source: ABS Census 2021 G05 — Marital Status by SAL

Williamstown Ancestry

English

36.2%

Australian

33.0%

German

9.4%

Scottish

7.2%

Irish

5.3%

Other

2.9%

Italian

1.9%

Dutch

1.9%

Aboriginal Australianralian

0.8%

Polish

0.6%

Greek

0.4%

New Zealander

0.4%

Source: ABS Census 2021 G08 — Ancestry by SAL

Williamstown School & University Attendance

Primary — Government

32.7%

Secondary — Government

17.0%

Primary — Other Non-Govt

16.5%

Vocational Education

9.8%

Secondary — Other Non-Govt

9.7%

Secondary — Catholic

5.7%

Pre-school

5.7%

Primary — Catholic

2.8%

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

Williamstown Need for Assistance

♿

Needs assistance

5.1% 296

✅

No need for assistance

94.9% 5,459

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

Williamstown Volunteering

🤝

Volunteer

20.9% 478

—

Not a volunteer

79.1% 1,813

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Williamstown Monthly Mortgage Repayments

$0-$299/mo

3.8%

$300-$449/mo

3.1%

$450-$599/mo

1.6%

$600-$799/mo

4.9%

$800-$999/mo

5.4%

$1,000-$1,399/mo

25.4%

$1,400-$1,799/mo

23.2%

$1,800-$2,399/mo

21.2%

$2,400-$2,999/mo

6.7%

$3,000-$3,999/mo

4.7%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Williamstown How People Get to Work

Car (driver)

80.5%

Did not go to work

12.6%

Car (passenger)

3.9%

Walked only

1.2%

Truck

0.9%

Other

0.4%

Motorbike/Scooter

0.3%

Bus

0.3%

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

Williamstown Car Ownership

0 vehicles

1.3%

1 vehicle

23.0%

2 vehicles

39.4%

3 vehicles

21.0%

4+ vehicles

15.2%

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

Williamstown Number of Bedrooms

1 bedroom

1.8%

2 bedrooms

8.8%

3 bedrooms

44.2%

4 bedrooms

38.0%

5 bedrooms

6.3%

6+ bedrooms

1.0%

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

Williamstown Population Mobility

8.2%

moved in the last year

30.8%

moved in the last 5 years

3.3%

unemployment rate (Census)

67.4%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Williamstown Indigenous Population

1.3%

Aboriginal & Torres Strait Islander

Indigenous residents

5,685

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Williamstown Long-term Health Conditions

Mental health

297

Asthma

124

Arthritis

124

Diabetes

Heart disease

Lung condition

Cancer

Stroke

Kidney disease

Dementia

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

Williamstown Personal Weekly Income Distribution

$0 or less/wk

7.4%

$1-$149/wk

4.8%

$150-$299/wk

7.2%

$300-$399/wk

4.6%

$400-$499/wk

3.2%

$500-$649/wk

4.2%

$650-$799/wk

10.0%

$800-$999/wk

11.2%

$1,000-$1,249/wk

13.1%

$1,250-$1,499/wk

9.8%

$1,500-$1,749/wk

7.6%

$1,750-$1,999/wk

5.0%

$2,000-$2,999/wk

9.6%

$3,000-$3,499/wk

1.0%

$3,500+/wk

1.5%

Source: ABS Census 2021 G17 — Personal Income by SAL

Williamstown Family Structure

Couple — children under 15

42.4%

Couple — no children

28.0%

Couple — no children under 15

19.4%

One parent — children under 15

7.0%

One parent — no children under 15

3.2%

Source: ABS Census 2021 G29 — Family Composition by SAL

Williamstown Military Service

🎖️

Current ADF — Regular

0.2% 5

🛡️

Current ADF — Reserves

0.3% 7

🏅

Previously served

3.8% 88

👤

Never served

95.6% 2,196

Source: ABS Census 2021 G22 — ADF Service by SAL

Williamstown Unpaid Carers

🤲

Provided unpaid assistance

13.4% 306

—

Did not provide

86.6% 1,985

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Williamstown Children Ever Born

No children

26.2%

1 child

11.4%

2 children

35.6%

3 children

19.4%

4 children

6.8%

5+ children

0.6%

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

Williamstown When Migrants Arrived

Before 1951

1951–1960

1961–1970

129

1971–1980

1981–1990

1991–2000

2001–2010

2011–2015

2016

2018

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

Williamstown Unpaid Domestic Work

Less than 5 hours

20.8%

5–14 hours

33.9%

15–29 hours

16.3%

30+ hours

10.7%

Did not do domestic work

18.3%

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

Williamstown Household Size

1 person

19.7%

2 persons

34.2%

3 persons

17.2%

4 persons

17.5%

5 persons

8.7%

6+ persons

2.7%

Source: ABS Census 2021 G35 — Household Size by SAL

Williamstown Where Residents Moved From

Same address

2,617

Moved from SA

152

Moved — same area (SA2)

Moved from NSW

Moved from WA

Moved from QLD

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

Williamstown Family Blending

Intact family — no other children

88.5%

Step family — no other children

5.9%

Blended family — no other children

4.4%

Intact family — other children present

1.2%

Source: ABS Census 2021 G31 — Family Blending by SAL

Williamstown Crime Statistics

Reported offences in 2025-26 — 25 total

Theft

Assault

Break & Enter

Other Against Person

Property Damage

Offence trend by year:

2021

2022

2023

2024

2025

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

Williamstown Schools

schools nearby

government

1001

avg ICSEA score

184

total students

Williamstown Primary School Government

Primary · R-6 · 184 students

1001

ICSEA

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

View all schools in Williamstown with map →

Williamstown Rent Prices & Affordability

17%

of income

Affordable

Household Income $1,782/wk

Median Rent $300/wk

Rent-to-Income 16.8%

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

If you earn X in Williamstown

Your weekly income

≈ $7,722/month

Median rent $300/wk

Left after rent $1,482/wk

Rent share 16.8%

Cheaper alternatives with similar incomes

Moorak

Income: $817/wk Rent: $250/wk Save: $50/wk

Everard Park

Income: $744/wk Rent: $286/wk Save: $14/wk

Keith

Income: $746/wk Rent: $180/wk Save: $120/wk

Risdon Park South

Income: $713/wk Rent: $185/wk Save: $115/wk

Paringa

Income: $800/wk Rent: $200/wk Save: $100/wk

Renmark West

Income: $788/wk Rent: $200/wk Save: $100/wk

Whyalla Playford

Income: $771/wk Rent: $200/wk Save: $100/wk

Port Augusta West

Income: $720/wk Rent: $213/wk Save: $87/wk

Williamstown vs State & National Average

Nearby Suburbs in SA

Collinswood

Pop: 1,496 Income: $1,012/wk Rent: $300/wk

Tusmore

Pop: 1,503 Income: $1,090/wk Rent: $360/wk

Highgate (SA)

Pop: 1,504 Income: $988/wk Rent: $360/wk

Firle

Pop: 1,508 Income: $735/wk Rent: $350/wk

Maylands (SA)

Pop: 1,508 Income: $1,018/wk Rent: $338/wk

Netherby (SA)

Pop: 1,510 Income: $1,028/wk Rent: $380/wk

Compare Williamstown (SA)

Williamstown (SA) vs Collinswood →Williamstown (SA) vs Tusmore →Williamstown (SA) vs Highgate (SA) →Williamstown (SA) vs Firle →

Frequently Asked Questions About Williamstown

What is the population of Williamstown SA?

The population of Williamstown SA is 2,981 according to the ABS Census 2021.The suburb has a population density of 41.8 people per km².Williamstown is ranked #2,423 out of 14,663 suburbs by population.

What is the median income in Williamstown?

The median personal income in Williamstown SA is $813 per week, or $42,276 per year.The median household income is $1,782 per week.Family income is $2,063 per week.Williamstown is ranked #3,378 by income out of 14,663 Australian suburbs.

How much is rent in Williamstown?

Median rent in Williamstown SA is $300 per week ($1,300 per month).Rent represents 16.8% of household income, which is considered affordable.Williamstown ranks #4,529 out of 14,663 suburbs by rent.

What are mortgage repayments in Williamstown?

The median monthly mortgage repayment in Williamstown SA is $1,500. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Williamstown?

The median age in Williamstown SA is 42 years.This is older than the national median age of 38 years.

Is Williamstown a good suburb to live in?

Williamstown is a suburb in South Australia with a population of 2,981.The median income is $813/wk, which is above the SA average of $763/wk.Rent affordability is rated as affordable (16.8% 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: 41602. All dollar figures in AUD.