New South Wales · Suburb Profile

Mount Colah NSW — Suburb Profile

Population, median income, rent prices, housing costs and demographics for Mount Colah, New South Wales. ABS Census 2021.

The population of Mount Colah NSW is 7,816 according to the 2021 Census. The median personal income in Mount Colah is $1,032 per week ($53,664 per year). Median rent in Mount Colah is $525 per week ($2,275 per month). Mount Colah has a median age of 40 years, older than the national median of 38. Mount Colah has a population density of 706.5 people per km².

The most common overseas birthplace in Mount Colah is England. The most common religion is No Religion (45% of residents). After English, the most spoken language is Mandarin. The median monthly mortgage repayment in Mount Colah is $2,544.

There were 27 recorded offences in Mount Colah in 2025-26, a rate of 3 offences per 1,000 people. The most common offence category was theft (11 offences).

Mount Colah Map

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Mount Colah Population

residents (Census 2021)

Mount Colah Median Income & Rent

💰

Median Income

$1,032/wk

$53,664 per year

#1025 of 14,663

🏠

Median Rent

$525/wk

$2,275 per month

#492 of 14,663

👤

Median Age

40years

2 years older than national median

🏡

Mortgage

$2,544/mo

Avg household size: 2.9 · 0.9 per bedroom

Mount Colah Demographics

Gender Split

Male 50.1% (3,915) Female 49.9% (3,895)

Population Density

706.5

people per km²

7,816 people · 11.1 km²

Households

2.9

Avg household size

0.9

Persons per bedroom

$2,805

Family income/wk

Mount Colah 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)

Mount Colah Housing Tenure

🏠

Owned outright

40.6% 880 dwellings

🏦

Owned with mortgage

59.4% 1,289 dwellings

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

Mount Colah Country of Birth

Australia

82.1%

England

5.1%

India

4.9%

China

3.1%

Iran

2.2%

Hong Kong

0.8%

Germany

0.7%

Indonesia

0.4%

Afghanistan

0.4%

Canada

0.3%

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

Mount Colah Religion

No Religion

45.2%

Catholic

23.5%

Anglican

14.1%

Hinduism

4.3%

Not stated

3.9%

Uniting Church

3.8%

Christian (other)

2.6%

Buddhism

2.6%

Source: ABS Census 2021 G14 — Religion by SAL

Mount Colah Education Level

Year 12 or equivalent

77.9%

Year 10 or equivalent

15.9%

Year 11 or equivalent

4.0%

Year 9 or equivalent

2.2%

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

Mount Colah Languages Spoken at Home

Mandarin

22.2%

Other

19.4%

Persian ED

14.0%

SAL Tot

12.3%

Hindi

10.2%

Spanish

7.6%

Cantonese

7.2%

Korean

7.1%

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

Mount Colah Employment

💼

Employed full-time

43.9% 2,523 people

⏰

Employed part-time

22.6% 1,296 people

🔍

Unemployed

2.7% 157 people

🏠

Not in labour force

30.8% 1,771 people

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

Mount Colah Qualifications

Bachelor Degree

38.2%

Certificate III/IV

21.9%

Advanced Diploma/Diploma

17.7%

Postgraduate Degree

15.1%

Graduate Diploma/Certificate

5.4%

Certificate I/II

1.6%

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

Mount Colah Occupation

Professionals

37.9%

Managers

17.7%

Clerical & Administrative

12.7%

Technicians & Trade Workers

11.9%

Community & Personal Service

9.4%

Sales Workers

4.3%

Labourers

3.7%

Machinery Operators & Drivers

2.4%

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

Mount Colah Field of Study

Management & Commerce

24.5%

Engineering

14.4%

Society & Culture

11.6%

Health

10.6%

Education

9.5%

Information Technology

8.4%

Architecture & Building

5.9%

Creative Arts

5.2%

Natural & Physical Sciences

4.3%

Food, Hospitality & Personal Services

3.7%

Agriculture & Environment

1.8%

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

Mount Colah Dwelling Types

Separate house

95.6%

Semi-detached (2+ storey)

3.3%

Semi-detached (1 storey)

1.1%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Mount Colah Weekly Household Income

Nil/Negative/wk

1.1%

$1-$149/wk

0.3%

$150-$299/wk

0.5%

$300-$399/wk

0.9%

$400-$499/wk

2.9%

$500-$649/wk

1.7%

$650-$799/wk

3.2%

$800-$999/wk

4.4%

$1,000-$1,249/wk

5.1%

$1,250-$1,499/wk

7.1%

$1,500-$1,749/wk

5.6%

$1,750-$1,999/wk

5.4%

$2,000-$2,499/wk

11.7%

$2,500-$2,999/wk

8.9%

$3,000-$3,499/wk

9.6%

$3,500-$3,999/wk

7.0%

$4,000+/wk

24.5%

Source: ABS Census 2021 G33 — Household Income by SAL

Mount Colah Marital Status

💍

Married

56.6% 3,542

↔️

Separated

2.4% 153

📋

Divorced

7.0% 436

🕊️

Widowed

3.5% 218

👤

Never married

30.5% 1,905

Source: ABS Census 2021 G05 — Marital Status by SAL

Mount Colah Ancestry

English

26.8%

Australian

25.3%

Other

13.2%

Irish

7.6%

Scottish

7.5%

Chinese

5.6%

Indian

3.7%

Italian

3.0%

German

2.8%

Filipino

2.3%

Dutch

1.4%

Korean

0.9%

Source: ABS Census 2021 G08 — Ancestry by SAL

Mount Colah School & University Attendance

Primary — Government

32.8%

Secondary — Government

24.3%

Vocational Education

11.2%

Pre-school

11.0%

Secondary — Catholic

8.4%

Primary — Catholic

5.4%

Secondary — Other Non-Govt

4.3%

Primary — Other Non-Govt

2.8%

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

Mount Colah Need for Assistance

♿

Needs assistance

3.9% 594

✅

No need for assistance

96.1% 14,746

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

Mount Colah Volunteering

🤝

Volunteer

17.6% 1,076

—

Not a volunteer

82.4% 5,044

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Mount Colah Monthly Mortgage Repayments

$0-$299/mo

5.7%

$300-$449/mo

0.8%

$450-$599/mo

1.9%

$600-$799/mo

1.4%

$800-$999/mo

1.2%

$1,000-$1,399/mo

7.4%

$1,400-$1,799/mo

11.2%

$1,800-$2,399/mo

25.3%

$2,400-$2,999/mo

19.1%

$3,000-$3,999/mo

26.1%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Mount Colah How People Get to Work

Car (driver)

63.3%

Did not go to work

23.3%

Car (passenger)

4.1%

Train

4.1%

Walked only

2.2%

Truck

1.2%

Other

0.8%

Motorbike/Scooter

0.5%

Bicycle

0.3%

Bus

0.1%

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

Mount Colah Car Ownership

0 vehicles

3.7%

1 vehicle

33.7%

2 vehicles

41.6%

3 vehicles

13.9%

4+ vehicles

7.1%

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

Mount Colah Number of Bedrooms

1 bedroom

4.5%

2 bedrooms

12.1%

3 bedrooms

35.3%

4 bedrooms

35.9%

5 bedrooms

10.6%

6+ bedrooms

1.6%

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

Mount Colah Population Mobility

11.3%

moved in the last year

33.5%

moved in the last 5 years

3.5%

unemployment rate (Census)

69.9%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Mount Colah Indigenous Population

0.9%

Aboriginal & Torres Strait Islander

132

Indigenous residents

15,274

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Mount Colah Long-term Health Conditions

Mental health

598

Asthma

318

Arthritis

200

Diabetes

187

Heart disease

137

Cancer

Lung condition

Kidney disease

Stroke

Dementia

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

Mount Colah Personal Weekly Income Distribution

$0 or less/wk

11.4%

$1-$149/wk

4.5%

$150-$299/wk

4.9%

$300-$399/wk

2.6%

$400-$499/wk

2.0%

$500-$649/wk

2.7%

$650-$799/wk

7.1%

$800-$999/wk

7.9%

$1,000-$1,249/wk

10.3%

$1,250-$1,499/wk

9.2%

$1,500-$1,749/wk

8.2%

$1,750-$1,999/wk

6.9%

$2,000-$2,999/wk

13.4%

$3,000-$3,499/wk

3.4%

$3,500+/wk

5.6%

Source: ABS Census 2021 G17 — Personal Income by SAL

Mount Colah Family Structure

Couple — children under 15

45.7%

Couple — no children under 15

23.5%

Couple — no children

21.2%

One parent — no children under 15

5.2%

One parent — children under 15

4.3%

Source: ABS Census 2021 G29 — Family Composition by SAL

Mount Colah Military Service

🎖️

Current ADF — Regular

0.1% 4

🛡️

Current ADF — Reserves

0.0% 3

🏅

Previously served

1.5% 93

👤

Never served

98.4% 6,039

Source: ABS Census 2021 G22 — ADF Service by SAL

Mount Colah Unpaid Carers

🤲

Provided unpaid assistance

12.5% 769

—

Did not provide

87.5% 5,359

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Mount Colah Children Ever Born

No children

32.1%

1 child

14.1%

2 children

34.1%

3 children

14.7%

4 children

4.6%

5+ children

0.4%

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

Mount Colah When Migrants Arrived

Before 1951

1951–1960

1961–1970

146

1971–1980

209

1981–1990

369

1991–2000

415

2001–2010

649

2011–2015

364

2016

2017

2018

2019

2020

2021

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

Mount Colah Unpaid Domestic Work

Less than 5 hours

21.9%

5–14 hours

33.0%

15–29 hours

15.8%

30+ hours

9.3%

Did not do domestic work

20.1%

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

Mount Colah Household Size

1 person

15.3%

2 persons

30.0%

3 persons

20.6%

4 persons

23.1%

5 persons

7.7%

6+ persons

3.3%

Source: ABS Census 2021 G35 — Household Size by SAL

Mount Colah Where Residents Moved From

Same address

6,749

Moved from NSW

563

Moved — same area (SA2)

244

Moved from overseas

Moved from QLD

Moved from VIC

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

Mount Colah Family Blending

Intact family — no other children

90.3%

Step family — no other children

6.4%

Blended family — no other children

2.0%

Intact family — other children present

0.6%

Other couple — children only

0.5%

Step family — other children present

0.2%

Source: ABS Census 2021 G31 — Family Blending by SAL

Mount Colah Crime Statistics

Reported offences in 2025-26 — 27 total

Theft

Assault

Other Against Person

Property Damage

Other Against Property

Traffic

Sexual Offences

Offence trend by year:

2020

2021

2022

2023

2024

2025

Source: NSW BOCSAR — bocsar.nsw.gov.au

Mount Colah Schools

schools nearby

government

1089

avg ICSEA score

2,928

total students

St Patrick's Catholic Primary School Catholic

Primary · K-6 · 223 students

1124

ICSEA

Asquith Public School Government

Primary · K-6 · 384 students

1102

ICSEA

Mount Colah Public School Government

Primary · K-6 · 442 students

1098

ICSEA

Ku-ring-gai High School Government

Secondary · 7-12 · 536 students

1088

ICSEA

Mount Kuring-gai Public School Government

Primary · K-6 · 132 students

1083

ICSEA

Asquith High School Government

Secondary · 7-12 · 669 students

1082

ICSEA

Hornsby High School Government

Secondary · 7-12 · 542 students

1045

ICSEA

Gibberagong Environmental Education Centre Government

Combined

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

View all schools in Mount Colah with map →

Mount Colah Rent Prices & Affordability

21%

of income

Affordable

Household Income $2,505/wk

Median Rent $525/wk

Rent-to-Income 21.0%

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

If you earn X in Mount Colah

Your weekly income

≈ $10,855/month

Median rent $525/wk

Left after rent $1,980/wk

Rent share 21.0%

Cheaper alternatives with similar incomes

East Albury

Income: $858/wk Rent: $280/wk Save: $245/wk

East Tamworth

Income: $915/wk Rent: $325/wk Save: $200/wk

Lochinvar

Income: $889/wk Rent: $370/wk Save: $155/wk

Bulli

Income: $952/wk Rent: $370/wk Save: $155/wk

Lambton

Income: $846/wk Rent: $380/wk Save: $145/wk

Tatton

Income: $1,009/wk Rent: $385/wk Save: $140/wk

Tingira Heights

Income: $826/wk Rent: $400/wk Save: $125/wk

Floraville

Income: $885/wk Rent: $405/wk Save: $120/wk

Mount Colah vs State & National Average

Nearby Suburbs in NSW

Bellingen

Pop: 3,923 Income: $651/wk Rent: $390/wk

Oxley Vale

Pop: 3,935 Income: $731/wk Rent: $335/wk

Point Clare

Pop: 3,974 Income: $756/wk Rent: $380/wk

Darling Point

Pop: 3,977 Income: $1,799/wk Rent: $825/wk

Watanobbi

Pop: 3,980 Income: $639/wk Rent: $380/wk

Kotara

Pop: 3,980 Income: $927/wk Rent: $460/wk

Compare Mount Colah

Mount Colah vs Bellingen →Mount Colah vs Oxley Vale →Mount Colah vs Point Clare →Mount Colah vs Darling Point →

Frequently Asked Questions About Mount Colah

What is the population of Mount Colah NSW?

The population of Mount Colah NSW is 7,816 according to the ABS Census 2021.The suburb has a population density of 706.5 people per km².Mount Colah is ranked #912 out of 14,663 suburbs by population.

What is the median income in Mount Colah?

The median personal income in Mount Colah NSW is $1,032 per week, or $53,664 per year.The median household income is $2,505 per week.Family income is $2,805 per week.Mount Colah is ranked #1,025 by income out of 14,663 Australian suburbs.

How much is rent in Mount Colah?

Median rent in Mount Colah NSW is $525 per week ($2,275 per month).Rent represents 21.0% of household income, which is considered affordable.Mount Colah ranks #492 out of 14,663 suburbs by rent.

What are mortgage repayments in Mount Colah?

The median monthly mortgage repayment in Mount Colah NSW is $2,544. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Mount Colah?

The median age in Mount Colah NSW is 40 years.This is older than the national median age of 38 years.

Is Mount Colah a good suburb to live in?

Mount Colah is a suburb in New South Wales with a population of 7,816.The median income is $1,032/wk, which is above the NSW average of $781/wk.Rent affordability is rated as affordable (21.0% 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: 12761. All dollar figures in AUD.