South Australia · Suburb Profile

Trinity Gardens SA — Suburb Profile

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

The population of Trinity Gardens SA is 1,264 according to the 2021 Census. The median personal income in Trinity Gardens is $923 per week ($47,996 per year). Median rent in Trinity Gardens is $375 per week ($1,625 per month). Trinity Gardens has a median age of 40 years, older than the national median of 38. Trinity Gardens has a population density of 2119.4 people per km².

The most common overseas birthplace in Trinity Gardens is England. The most common religion is No Religion (44% of residents). After English, the most spoken language is Italian. The median monthly mortgage repayment in Trinity Gardens is $2,184.

There were 28 recorded offences in Trinity Gardens in 2025-26, a rate of 22 offences per 1,000 people. The most common offence category was theft (21 offences).

Trinity Gardens Map

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Trinity Gardens Population

residents (Census 2021)

Trinity Gardens Median Income & Rent

💰

Median Income

$923/wk

$47,996 per year

#1875 of 14,663

🏠

Median Rent

$375/wk

$1,625 per month

#2632 of 14,663

👤

Median Age

40years

2 years older than national median

🏡

Mortgage

$2,184/mo

Avg household size: 2.6 · 0.8 per bedroom

Trinity Gardens Demographics

Gender Split

Male 46.7% (593) Female 53.3% (677)

Population Density

2119.4

people per km²

1,264 people · 0.6 km²

Households

2.6

Avg household size

0.8

Persons per bedroom

$2,639

Family income/wk

Trinity Gardens 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)

Trinity Gardens Housing Tenure

🏠

Owned outright

58.1% 201 dwellings

🏦

Owned with mortgage

41.9% 145 dwellings

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

Trinity Gardens Country of Birth

Australia

84.4%

England

5.7%

China

4.3%

Greece

2.2%

India

2.0%

Canada

0.8%

Hong Kong

0.6%

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

Trinity Gardens Religion

No Religion

44.2%

Catholic

31.6%

Eastern Orthodox

7.7%

Anglican

5.4%

Not stated

3.4%

Uniting Church

2.9%

Hinduism

2.4%

Christian (other)

2.4%

Source: ABS Census 2021 G14 — Religion by SAL

Trinity Gardens Education Level

Year 12 or equivalent

78.2%

Year 11 or equivalent

11.7%

Year 10 or equivalent

8.8%

Year 9 or equivalent

1.3%

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

Trinity Gardens Languages Spoken at Home

Italian

32.0%

Mandarin

27.5%

Greek

18.3%

Cantonese

7.2%

Arabic

3.9%

Japan

3.9%

Korean

3.9%

Gujarati

3.3%

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

Trinity Gardens Employment

💼

Employed full-time

38.7% 385 people

⏰

Employed part-time

29.7% 296 people

🔍

Unemployed

2.4% 24 people

🏠

Not in labour force

29.1% 290 people

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

Trinity Gardens Qualifications

Bachelor Degree

44.7%

Certificate III/IV

19.2%

Postgraduate Degree

14.6%

Advanced Diploma/Diploma

14.2%

Graduate Diploma/Certificate

6.8%

Certificate I/II

0.5%

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

Trinity Gardens Occupation

Professionals

44.6%

Managers

15.4%

Clerical & Administrative

13.6%

Community & Personal Service

9.4%

Technicians & Trade Workers

8.7%

Sales Workers

4.3%

Labourers

2.8%

Machinery Operators & Drivers

1.1%

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

Trinity Gardens Field of Study

Management & Commerce

23.2%

Health

16.4%

Society & Culture

15.1%

Engineering

13.3%

Education

12.2%

Architecture & Building

6.0%

Food, Hospitality & Personal Services

3.5%

Creative Arts

3.5%

Natural & Physical Sciences

3.5%

Information Technology

2.9%

Agriculture & Environment

0.6%

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

Trinity Gardens Dwelling Types

Separate house

86.7%

Semi-detached (1 storey)

11.9%

Semi-detached (2+ storey)

1.4%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Trinity Gardens Weekly Household Income

Nil/Negative/wk

0.9%

$1-$149/wk

0.7%

$150-$299/wk

0.9%

$300-$399/wk

2.6%

$400-$499/wk

5.5%

$500-$649/wk

3.1%

$650-$799/wk

6.4%

$800-$999/wk

6.4%

$1,000-$1,249/wk

5.7%

$1,250-$1,499/wk

4.6%

$1,500-$1,749/wk

5.9%

$1,750-$1,999/wk

5.9%

$2,000-$2,499/wk

8.8%

$2,500-$2,999/wk

10.8%

$3,000-$3,499/wk

6.2%

$3,500-$3,999/wk

3.7%

$4,000+/wk

22.0%

Source: ABS Census 2021 G33 — Household Income by SAL

Trinity Gardens Marital Status

💍

Married

51.7% 543

↔️

Separated

2.3% 24

📋

Divorced

6.9% 72

🕊️

Widowed

5.8% 61

👤

Never married

33.4% 351

Source: ABS Census 2021 G05 — Marital Status by SAL

Trinity Gardens Ancestry

English

23.2%

Italian

19.9%

Australian

18.0%

Chinese

8.0%

Irish

7.4%

Other

6.3%

Greek

6.0%

Scottish

5.3%

German

3.8%

Indian

0.8%

Filipino

0.8%

Vietnamese

0.6%

Source: ABS Census 2021 G08 — Ancestry by SAL

Trinity Gardens School & University Attendance

Primary — Government

33.2%

Secondary — Government

14.7%

Vocational Education

12.8%

Secondary — Catholic

12.5%

Primary — Catholic

9.4%

Pre-school

7.9%

Secondary — Other Non-Govt

6.8%

Primary — Other Non-Govt

2.6%

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

Trinity Gardens Need for Assistance

♿

Needs assistance

4.4% 109

✅

No need for assistance

95.6% 2,382

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

Trinity Gardens Volunteering

🤝

Volunteer

17.7% 181

—

Not a volunteer

82.3% 839

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Trinity Gardens Monthly Mortgage Repayments

$0-$299/mo

8.5%

$300-$449/mo

3.4%

$450-$599/mo

2.6%

$600-$799/mo

2.6%

$800-$999/mo

4.3%

$1,000-$1,399/mo

12.8%

$1,400-$1,799/mo

10.3%

$1,800-$2,399/mo

19.7%

$2,400-$2,999/mo

14.5%

$3,000-$3,999/mo

21.4%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Trinity Gardens How People Get to Work

Car (driver)

67.4%

Did not go to work

13.2%

Car (passenger)

5.7%

Bus

5.4%

Bicycle

3.4%

Walked only

3.3%

Truck

1.0%

Taxi/Rideshare

0.7%

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

Trinity Gardens Car Ownership

0 vehicles

7.4%

1 vehicle

33.8%

2 vehicles

40.0%

3 vehicles

13.1%

4+ vehicles

5.7%

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

Trinity Gardens Number of Bedrooms

1 bedroom

2.7%

2 bedrooms

19.8%

3 bedrooms

49.5%

4 bedrooms

25.3%

5 bedrooms

2.7%

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

Trinity Gardens Population Mobility

14.8%

moved in the last year

38.6%

moved in the last 5 years

3.7%

unemployment rate (Census)

70.7%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Trinity Gardens Indigenous Population

0.2%

Aboriginal & Torres Strait Islander

Indigenous residents

2,498

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Trinity Gardens Long-term Health Conditions

Mental health

Asthma

Diabetes

Arthritis

Heart disease

Cancer

Kidney disease

Stroke

Lung condition

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

Trinity Gardens Personal Weekly Income Distribution

$0 or less/wk

9.3%

$1-$149/wk

5.3%

$150-$299/wk

6.0%

$300-$399/wk

2.5%

$400-$499/wk

2.0%

$500-$649/wk

2.8%

$650-$799/wk

7.5%

$800-$999/wk

9.0%

$1,000-$1,249/wk

10.2%

$1,250-$1,499/wk

8.5%

$1,500-$1,749/wk

8.0%

$1,750-$1,999/wk

7.4%

$2,000-$2,999/wk

11.6%

$3,000-$3,499/wk

2.5%

$3,500+/wk

7.3%

Source: ABS Census 2021 G17 — Personal Income by SAL

Trinity Gardens Family Structure

Couple — children under 15

42.0%

Couple — no children

22.8%

Couple — no children under 15

22.8%

One parent — no children under 15

6.4%

One parent — children under 15

6.1%

Source: ABS Census 2021 G29 — Family Composition by SAL

Trinity Gardens Military Service

🎖️

Current ADF — Regular

0.3% 3

🏅

Previously served

2.0% 20

👤

Never served

97.7% 999

Source: ABS Census 2021 G22 — ADF Service by SAL

Trinity Gardens Unpaid Carers

🤲

Provided unpaid assistance

12.9% 131

—

Did not provide

87.1% 887

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Trinity Gardens Children Ever Born

No children

36.6%

1 child

11.4%

2 children

35.0%

3 children

14.0%

4 children

3.0%

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

Trinity Gardens When Migrants Arrived

1951–1960

1961–1970

1971–1980

1981–1990

1991–2000

2001–2010

2011–2015

2016

2017

2018

2019

2020

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

Trinity Gardens Unpaid Domestic Work

Less than 5 hours

21.2%

5–14 hours

32.7%

15–29 hours

14.6%

30+ hours

8.5%

Did not do domestic work

22.9%

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

Trinity Gardens Household Size

1 person

24.2%

2 persons

30.8%

3 persons

14.6%

4 persons

22.8%

5 persons

6.8%

6+ persons

0.8%

Source: ABS Census 2021 G35 — Household Size by SAL

Trinity Gardens Where Residents Moved From

Same address

1,060

Moved from SA

134

Moved — same area (SA2)

Moved from VIC

Moved from overseas

Moved from WA

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

Trinity Gardens Family Blending

Intact family — no other children

94.9%

Step family — no other children

3.4%

Intact family — other children present

1.7%

Source: ABS Census 2021 G31 — Family Blending by SAL

Trinity Gardens Crime Statistics

Reported offences in 2025-26 — 28 total

Theft

Assault

Fraud

Break & Enter

Offence trend by year:

2021

2022

2023

2024

2025

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

Trinity Gardens Schools

schools nearby

government

1106

avg ICSEA score

21,092

total students

St Peter's Collegiate Girls' School Independent

Combined · R-12 · 873 students

1180

ICSEA

Pembroke School Independent

Combined · R-12 · 1,672 students

1171

ICSEA

St Peter's College Independent

Combined · R-12 · 1,585 students

1164

ICSEA

Rose Park Primary School Government

Primary · R-6 · 525 students

1162

ICSEA

Burnside Primary School Government

Primary · R-6 · 686 students

1156

ICSEA

Norwood Primary School Government

Primary · R-6 · 361 students

1148

ICSEA

Prince Alfred College Independent

Combined · R-12 · 1,127 students

1143

ICSEA

Marryatville Primary School Government

Primary · R-6 · 506 students

1127

ICSEA

East Marden Primary School Government

Primary · R-6 · 548 students

1127

ICSEA

Marryatville High School Government

Secondary · 7-12 · 1,759 students

1120

ICSEA

East Adelaide School Government

Primary · R-6 · 495 students

1117

ICSEA

St Patrick's Special School Catholic

Combined · U · 51 students

1115

ICSEA

St Joseph's Memorial School Catholic

Primary · R-6 · 192 students

1108

ICSEA

Trinity Gardens School Government

Primary · U, R-6 · 695 students

1103

ICSEA

St Monica's Parish School Catholic

Primary · R-6 · 192 students

1102

ICSEA

Showing 15 of 31 schools

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

View all schools in Trinity Gardens with map →

Trinity Gardens Rent Prices & Affordability

19%

of income

Affordable

Household Income $2,006/wk

Median Rent $375/wk

Rent-to-Income 18.7%

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

If you earn X in Trinity Gardens

Your weekly income

≈ $8,693/month

Median rent $375/wk

Left after rent $1,631/wk

Rent share 18.7%

Cheaper alternatives with similar incomes

Peterhead

Income: $801/wk Rent: $300/wk Save: $75/wk

Allenby Gardens

Income: $796/wk Rent: $323/wk Save: $52/wk

St Morris

Income: $829/wk Rent: $343/wk Save: $32/wk

Boston

Income: $993/wk Rent: $345/wk Save: $30/wk

McLaren Flat

Income: $842/wk Rent: $350/wk Save: $25/wk

Renmark West

Income: $788/wk Rent: $200/wk Save: $175/wk

Paringa

Income: $800/wk Rent: $200/wk Save: $175/wk

Black Forest

Income: $894/wk Rent: $290/wk Save: $85/wk

Trinity Gardens vs State & National Average

Nearby Suburbs in SA

Cherry Gardens

Pop: 633 Income: $773/wk Rent: $350/wk

Glencoe (SA)

Pop: 633 Income: $700/wk Rent: $200/wk

Lucindale

Pop: 637 Income: $758/wk Rent: $150/wk

Clarendon (SA)

Pop: 643 Income: $951/wk Rent: $255/wk

New Port

Pop: 647 Income: $1,043/wk Rent: $350/wk

Port Hughes

Pop: 647 Income: $658/wk Rent: $270/wk

Compare Trinity Gardens

Trinity Gardens vs Cherry Gardens →Trinity Gardens vs Glencoe (SA) →Trinity Gardens vs Lucindale →Trinity Gardens vs Clarendon (SA) →

Frequently Asked Questions About Trinity Gardens

What is the population of Trinity Gardens SA?

The population of Trinity Gardens SA is 1,264 according to the ABS Census 2021.The suburb has a population density of 2119.4 people per km².Trinity Gardens is ranked #3,640 out of 14,663 suburbs by population.

What is the median income in Trinity Gardens?

The median personal income in Trinity Gardens SA is $923 per week, or $47,996 per year.The median household income is $2,006 per week.Family income is $2,639 per week.Trinity Gardens is ranked #1,875 by income out of 14,663 Australian suburbs.

How much is rent in Trinity Gardens?

Median rent in Trinity Gardens SA is $375 per week ($1,625 per month).Rent represents 18.7% of household income, which is considered affordable.Trinity Gardens ranks #2,632 out of 14,663 suburbs by rent.

What are mortgage repayments in Trinity Gardens?

The median monthly mortgage repayment in Trinity Gardens SA is $2,184. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Trinity Gardens?

The median age in Trinity Gardens SA is 40 years.This is older than the national median age of 38 years.

Is Trinity Gardens a good suburb to live in?

Trinity Gardens is a suburb in South Australia with a population of 1,264.The median income is $923/wk, which is above the SA average of $763/wk.Rent affordability is rated as affordable (18.7% 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: 41472. All dollar figures in AUD.