St Marys, NSW: suburb profile

The population of St Marys NSW is 13,256 according to the 2021 Census. The median personal income in St Marys is $754 per week ($39,208 per year). Median rent in St Marys is $365 per week ($1,582 per month). St Marys has a median age of 34 years, younger than the national median of 38. St Marys has a population density of 1,367 people per km².

The most common overseas birthplace in St Marys is Philippines. The most common religion is Catholic (25.6% of residents). After English, the most spoken language is Arabic. The median monthly mortgage repayment in St Marys is $1,847.

There were 877 recorded offences in St Marys in 2025-26, a rate of 66 offences per 1,000 people. The most common offence category was theft (223 offences).

Population
13,256
Census 2021
Median income
$754/wk
Personal, Census 2021
Median rent
$365/wk
Weekly, Census 2021
Median age
34years
Census 2021

Valid: Census 2021 · Source: ABS Census of Population and Housing 2021; offences from NSW BOCSAR (bocsar.nsw.gov.au), 2025-26.

St Marys vs the typical NSW suburb

The median personal income in St Marys is $754 a week, in line with the typical NSW suburb ($765). That ranks 1,143rd of 2,150 NSW suburbs with 200 or more residents. Median rent is $365 a week, $20 less than the typical NSW suburb. Rent takes 25.4% of the median household income here, against 22.6% in the typical NSW suburb. The median resident is 34, 9 years younger than in the typical NSW suburb (43).

The typical suburb is the median across suburbs with 200 or more residents. ABS Census 2021, calculated by GDP.com.au.
MeasureSt MarysTypical NSWDifferenceTypical Australia
Personal income$754/wk$765/wk −1%$766/wk
Household income$1,437/wk$1,704/wk −16%$1,637/wk
Rent$365/wk$385/wk −5%$330/wk
Mortgage repayment$1,847/mo$1,965/mo −6%$1,733/mo
Median age3443 −9 yrs42
Rent share of household income25.4%22.6% +2.8 pts20.3%
Income, rent and mortgage against the typical suburb Valid: Census 2021 · Source: ABS, calculated by GDP.com.au
Bar chart of median income, rent and mortgage repayment in St Marys, the typical NSW suburb and the typical Australian suburb.

St Marys Population

13,256 residents at the 2021 Census.

St Marys Median Income & Rent

Median Income
$754/wk
$39,208 per year
Ranked 4,443 of 14,663
Median Rent
$365/wk
$1,582 per month
Ranked 2,840 of 14,663
Median Age
34years
4 years younger than the national median
Mortgage
$1,847/mo
Avg household size: 2.5 · 0.9 per bedroom

Valid: Census 2021 · Source: ABS Census of Population and Housing.

St Marys Rent Prices & Affordability

25% of median household income goes on median rent

Marks at 25% and 35%. Band: moderate.

Household income $1,437/wk
Median rent $365/wk
Rent to income 25.4%

Rent is between 25% and 35% of household income: moderate housing costs.

Median rent in St Marys against your income

About $6,227 a month
Median rent $365/wk
Left after rent $1,072/wk
Rent share 25.4%

St Marys Schools

20
schools nearby
17
government
938
avg ICSEA score
8,743
total students
Wollemi College Independent
Combined · 2-12 · 565 students
1107
ICSEA
St Marys Senior High School Government
Secondary · 11-12 · 926 students
1052
ICSEA
Our Lady of The Rosary Primary School Catholic
Primary · K-6 · 368 students
1032
ICSEA
Ropes Crossing Public School Government
Primary · K-6 · 789 students
1019
ICSEA
Claremont Meadows Public School Government
Primary · K-6 · 687 students
1012
ICSEA
Werrington Public School Government
Primary · K-6 · 519 students
963
ICSEA
Werrington County Public School Government
Primary · K-6 · 319 students
961
ICSEA
St Marys Public School Government
Primary · P-6 · 258 students
954
ICSEA
Oxley Park Public School Government
Primary · P-6 · 601 students
953
ICSEA
Kurrambee School Government
Combined · U · 104 students
946
ICSEA
St Marys South Public School Government
Primary · K-6 · 319 students
945
ICSEA
Colyton High School Government
Secondary · 7-12 · 765 students
922
ICSEA
Bennett Road Public School Government
Primary · K-6 · 646 students
912
ICSEA
Penrith Valley School Government
Combined · U · 39 students
873
ICSEA
St Marys North Public School Government
Primary · K-6 · 345 students
873
ICSEA

Showing 15 of 20 schools.

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

All schools near St Marys, with a map

St Marys Map

St Marys, New South Wales Map data: OpenStreetMap
Loading map…

St Marys, New South Wales: 33.7595°S, 150.7708°E

St Marys Circle size: offences per 1,000 residents Schools (20)

People in St Marys

Demographics

Gender Split

Male 50.3% (6,667) Female 49.7% (6,592)

Population Density

1,367
people per km²
13,256 people · 9.7 km²

Households

2.5
Avg household size
0.9
Persons per bedroom
$1,747
Family income/wk

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 and Locality (SAL)

Most common overseas birthplaces

Philippines
4.6%
New Zealand
3.7%
India
3.7%
England
1.5%
Fiji
1.5%
Samoa
1.1%
China
0.8%

Shares are of all residents. Source: ABS Census 2021, G09 Country of Birth by SAL

Most common languages at home other than English

Arabic
2.9%
Tagalog
2.5%
Samoan
1.9%
Hindi
1.6%
Filipino
1.4%
Punjabi
1.2%
Tamil
1.1%

Shares are of all residents. Source: ABS Census 2021, G13 Language Used at Home by SAL

Ancestry

Australian
23.5%
English
22.0%
Filipino
6.2%
Irish
5.5%
Scottish
4.6%
Indian
4.6%
Australian Aboriginal
4.2%
Samoan
3.2%
Italian
2.9%
Chinese
2.2%
German
2.2%

Shares are of the suburb population. People can report up to two ancestries, so shares add to more than 100%. Source: ABS Census 2021, G08 Ancestry by SAL

Religion

Catholic
25.6%
No religion
23.0%
Not stated
11.3%
Anglican
9.4%
Islam
5.5%
Hinduism
5.1%
Christian (other)
4.5%
Eastern Orthodox
2.1%

Source: ABS Census 2021, G14 Religion by SAL

Indigenous Population

4.6%
Aboriginal & Torres Strait Islander

Source: ABS Census 2021, G07 Indigenous Status by SAL

Marital Status

Married
37.0% 3,865
Separated
4.9% 510
Divorced
10.7% 1,115
Widowed
4.9% 516
Never married
42.4% 4,430

Source: ABS Census 2021, G05 Marital Status by SAL

Family Structure

Couple: children under 15
44.6%
Couple: no children
19.9%
One parent: children under 15
13.2%
Couple: no children under 15
12.1%
One parent: no children under 15
10.2%

Source: ABS Census 2021, G29 Family Composition by SAL

Household Size

1 person
31.1%
2 persons
28.5%
3 persons
17.1%
4 persons
13.1%
5 persons
5.4%
6+ persons
4.7%

Source: ABS Census 2021, G35 Household Size by SAL

Homes in St Marys

Housing Tenure

Of the 4,771 occupied private dwellings in St Marys at the 2021 Census, 52.6% were rented, 17.9% owned outright and 26.6% owned with a mortgage.

Other tenure type
1.0% 48 dwellings
Owned outright
17.9% 854 dwellings
Owned with mortgage
26.6% 1,268 dwellings
Rented
52.6% 2,510 dwellings
Tenure type not stated
1.8% 84 dwellings

Source: ABS Census 2021, Suburb and Locality (SAL)

Dwelling Types

Separate house
63.1%
Semi-detached (2+ storey)
29.2%
Semi-detached (1 storey)
7.7%

Source: ABS Census 2021, G36 Dwelling Structure by SAL

Number of Bedrooms

1 bedroom
4.3%
2 bedrooms
26.8%
3 bedrooms
49.1%
4 bedrooms
15.8%
5 bedrooms
3.1%
6+ bedrooms
0.9%

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

Monthly Mortgage Repayments

$0-$299/mo
3.7%
$300-$449/mo
2.0%
$450-$599/mo
1.2%
$600-$799/mo
2.7%
$800-$999/mo
4.8%
$1,000-$1,399/mo
12.7%
$1,400-$1,799/mo
21.4%
$1,800-$2,399/mo
32.0%
$2,400-$2,999/mo
12.3%
$3,000-$3,999/mo
7.1%

Source: ABS Census 2021, G38 Mortgage Repayment by SAL

Car Ownership

0 vehicles
12.5%
1 vehicle
46.2%
2 vehicles
30.1%
3 vehicles
7.4%
4+ vehicles
3.9%

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

Work, income and education in St Marys

Employment

Employed full-time
35.2% 3,028 people
Employed part-time
17.1% 1,468 people
Unemployed
4.8% 412 people
Not in labour force
42.9% 3,683 people

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

Occupation

Professionals
20.4%
Clerical & Administrative
16.2%
Community & Personal Service
15.7%
Technicians & Trade Workers
15.1%
Machinery Operators & Drivers
11.6%
Managers
7.9%
Labourers
7.8%
Sales Workers
5.3%

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

Weekly Household Income

Nil/Negative/wk
2.2%
$1-$149/wk
0.7%
$150-$299/wk
1.9%
$300-$399/wk
3.4%
$400-$499/wk
6.6%
$500-$649/wk
4.8%
$650-$799/wk
6.1%
$800-$999/wk
7.7%
$1,000-$1,249/wk
9.5%
$1,250-$1,499/wk
9.5%
$1,500-$1,749/wk
8.4%
$1,750-$1,999/wk
7.1%
$2,000-$2,499/wk
12.7%
$2,500-$2,999/wk
7.1%
$3,000-$3,499/wk
5.3%
$3,500-$3,999/wk
2.7%
$4,000+/wk
4.3%

Source: ABS Census 2021, G33 Household Income by SAL

Personal Weekly Income Distribution

$0 or less/wk
13.5%
$1-$149/wk
2.8%
$150-$299/wk
6.2%
$300-$399/wk
4.4%
$400-$499/wk
4.1%
$500-$649/wk
3.5%
$650-$799/wk
9.2%
$800-$999/wk
13.7%
$1,000-$1,249/wk
14.8%
$1,250-$1,499/wk
10.0%
$1,500-$1,749/wk
7.0%
$1,750-$1,999/wk
4.4%
$2,000-$2,999/wk
5.2%
$3,000-$3,499/wk
0.7%
$3,500+/wk
0.7%

Source: ABS Census 2021, G17 Personal Income by SAL

How People Get to Work

Car (driver)
65.7%
Did not go to work
19.1%
Car (passenger)
6.5%
Train
3.1%
Walked only
1.5%
Truck
1.1%
Bus
0.8%
Motorbike/Scooter
0.7%
Other
0.7%
Bicycle
0.5%
Taxi/Rideshare
0.4%

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

Education Level

Year 12 or equivalent
58.7%
Year 10 or equivalent
26.9%
Year 11 or equivalent
7.2%
Year 9 or equivalent
7.2%

Shares are of people whose highest year of school is Year 9 to 12 only. Source: ABS Census 2021, G16 Highest Year of School by SAL

Qualifications

Certificate III/IV
39.5%
Bachelor Degree
26.4%
Advanced Diploma/Diploma
18.8%
Postgraduate Degree
9.7%
Certificate I/II
3.4%
Graduate Diploma/Certificate
2.2%

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

Field of Study

Management & Commerce
25.0%
Engineering
18.0%
Society & Culture
13.5%
Health
10.2%
Education
6.9%
Information Technology
6.7%
Food, Hospitality & Personal Services
6.7%
Architecture & Building
5.7%
Creative Arts
3.1%
Natural & Physical Sciences
2.8%
Agriculture & Environment
1.3%

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

School & University Attendance

Primary: Government
32.8%
Secondary: Government
20.6%
Vocational Education
15.0%
Pre-school
10.9%
Primary: Catholic
8.6%
Secondary: Catholic
5.7%
Primary: Other Non-Govt
3.5%
Secondary: Other Non-Govt
2.8%

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

More from the 2021 Census

Need for Assistance

Does not have need for assistance
83.4%
Has need for assistance
6.3%
Need for assistance not stated
10.4%

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

Long-term Health Conditions

Mental health
1,163
Asthma
496
Diabetes
438
Arthritis
423
Heart disease
282
Lung condition
270
Kidney disease
127
Cancer
122
Stroke
117
Dementia
22

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

Unpaid Carers

Provided unpaid assistance
11.7% 1,077
Did not provide
88.3% 8,161

Source: ABS Census 2021, G25 Unpaid Assistance by SAL

Volunteering

Volunteer
8.2% 761
Not a volunteer
91.8% 8,512

Source: ABS Census 2021, G23 Voluntary Work by SAL

Military Service

Current ADF: Regular
0.1% 5
Current ADF: Reserves
0.1% 9
Previously served
1.5% 140
Never served
98.4% 9,182

Source: ABS Census 2021, G22 ADF Service by SAL

Children Ever Born

No children
34.0%
1 child
16.7%
2 children
25.6%
3 children
14.0%
4 children
7.1%
5+ children
2.6%

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

When Migrants Arrived

Before 1951
40
1951: 1960
116
1961: 1970
331
1971: 1980
258
1981: 1990
458
1991: 2000
590
2001: 2010
1,147
2011: 2015
637
2016
159
2017
160
2018
175
2019
152
2020
63
2021
19

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

Population Mobility

16.3%
moved in the last year
49.5%
moved in the last 5 years
7.3%
unemployment rate (Census)
54.2%
labour force participation

Source: ABS Census 2021, G43 Summary by SAL

Where Residents Moved From

Same address
9,805
Moved from NSW
1,442
Moved: same area (SA2)
287
Moved from overseas
95
Moved from QLD
22
Moved from VIC
19
Moved from ACT
5
Moved from SA
3
Moved from NT
3

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

Unpaid Domestic Work

Less than 5 hours
17.1%
5: 14 hours
23.1%
15: 29 hours
10.3%
30+ hours
10.5%
Did not do domestic work
39.1%

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

Family Blending

Intact family: no other children
82.9%
Step family: no other children
9.7%
Blended family: no other children
4.8%
Intact family: other children present
1.9%
Other couple: children only
0.8%

Source: ABS Census 2021, G31 Family Blending by SAL

St Marys Crime Statistics

877 reported offences in 2025-26, by category.

Theft
223
Traffic
216
Other Against Property
180
Assault
88
Property Damage
57
Other Against Person
45
Drug Offences
36
Weapons
16
Sexual Offences
14
Robbery
2

Total offences by year

2020
2021
2022
2023
2024
2025

Source: NSW BOCSAR (bocsar.nsw.gov.au).

Cheaper alternatives with similar incomes

Tolland
Income: $666/wk Rent: $220/wk $145/wk less rent
West Tamworth
Income: $624/wk Rent: $275/wk $90/wk less rent
Bellbird
Income: $643/wk Rent: $323/wk $42/wk less rent
Ambarvale
Income: $630/wk Rent: $350/wk $15/wk less rent
Kingswood (Penrith - NSW)
Income: $747/wk Rent: $355/wk $10/wk less rent
South Windsor
Income: $763/wk Rent: $360/wk $5/wk less rent
Walgett
Income: $823/wk Rent: $175/wk $190/wk less rent
Bourke
Income: $860/wk Rent: $180/wk $185/wk less rent

Suburbs near St Marys

The closest suburb to St Marys is North St Marys, 1.6 km away.

North St Marys
1.6 km away · income $597/wk · rent $340/wk
Werrington
1.9 km away · income $806/wk · rent $360/wk
Claremont Meadows
2.3 km away · income $979/wk · rent $430/wk
Werrington County
2.5 km away · income $863/wk · rent $415/wk
Tregear
2.6 km away · income $518/wk · rent $300/wk
Oxley Park
2.6 km away · income $802/wk · rent $400/wk

Compare St Marys (NSW)

Frequently Asked Questions About St Marys

What is the population of St Marys NSW?

The population of St Marys NSW is 13,256 according to the ABS Census 2021. The suburb has a population density of 1,367 people per km². St Marys is ranked #357 out of 14,663 suburbs by population.

What is the median income in St Marys?

The median personal income in St Marys NSW is $754 per week, or $39,208 per year. The median household income is $1,437 per week. Family income is $1,747 per week. St Marys is ranked #4,443 by income out of 14,663 Australian suburbs.

How much is rent in St Marys?

Median rent in St Marys NSW is $365 per week ($1,582 per month). Rent represents 25.4% of household income, which is considered moderate. St Marys ranks #2,840 out of 14,663 suburbs by rent.

What are mortgage repayments in St Marys?

The median monthly mortgage repayment in St Marys NSW is $1,847. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in St Marys?

The median age in St Marys NSW is 34 years. This is younger than the national median age of 38 years.

Is St Marys a good suburb to live in?

St Marys is a suburb in New South Wales with a population of 13,256. The median income is $754/wk, which is below the typical NSW suburb ($765/wk). Rent affordability is rated as moderate (25.4% of household income). See the full suburb profile above for detailed statistics.

Explore More

Australian Average Salary Australian House Prices Sydney Cost of Living

Data: Australian Bureau of Statistics, Census of Population and Housing 2021. SA2 area: 13658. All dollar figures in AUD.