Suburb profile · ABS Census 2021
Castlecrag suburb profile
Castlecrag, NSW · Postcode 2068
This Castlecrag suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Castlecrag, NSW (postcode 2068). Use it as a free suburb report covering population, median rent, household income, age, housing tenure and employment, plus how those figures changed since Census 2016— then compare Castlecrag with nearby suburbs.
Castlecrag at a glance
Population
2,965
Median rent
$1,010/wk
Household income
$4,675/wk
Median age
47
Castlecrag trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
Census 2011 → 2016 → 2021
+0.3% over 10 years
Population
2,965
was 2,939 in 2016
+26 · +0.9%
Median rent
$1,010/wk
was $950/wk in 2016
+$60 · +6.3%
Household income
$4,675/wk
was $3,799/wk in 2016
+$876 · +23.1%
Median age
47
was 43 in 2016
+4 · +9.3%
Dig deeper: Castlecrag population growth · Castlecrag then and now
Castlecrag vs nearby & Greater Sydney
Median Census 2021 figures for Castlecrag, nearby suburbs (8), and the Sydney metro median (suburbs with 1,000+ people).
Rent
+106.1% vs area
- Castlecrag$1,010/wk
- Nearby$736.5/wk
- Sydney$490/wk
Household income
+120.6% vs area
- Castlecrag$4,675/wk
- Nearby$3,319.5/wk
- Sydney$2,119.5/wk
Median age
+17.5% vs area
- Castlecrag47
- Nearby41
- Sydney40
Personal income
+60% vs area
- Castlecrag$1,446/wk
- Nearby$1,200/wk
- Sydney$903.5/wk
Nearby uses the same postcode first, then larger suburbs in NSW. See Sydney rankings.
Socio-economic profile
How Castlecrag compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Castlecrag ranks among Australia's most advantaged suburbs. It shows strong access to economic resources and high education and occupation levels.
Relative disadvantage (IRSD)
Decile 101,131.1
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 101,195.1
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 101,172.2
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 101,187.7
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Castlecrag on the map
OpenStreetMap outline for Castlecrag, NSW.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Castlecrag people
- Population
- 2,965
- Median age
- 47
- Born overseas
- 31.9%
- Average household size
- 3.0
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Castlecrag income
- Median household income
- $4,675/wk
- Median personal income
- $1,446/wk
Median total weekly household income
Median total weekly personal income
Castlecrag housing
- Median rent
- $1,010/wk
- Median mortgage repayment
- $4,333/mo
- Separate houses
- 90.3%
- Flats & apartments
- 1.1%
- Owned outright
- 45%
- Mortgaged
- 35.7%
- Rented
- 10.1%
- Unoccupied dwellings
- 6.4%
Median weekly rent for rented dwellings
Median monthly mortgage repayment
Percentage of dwellings that are separate houses
Percentage of dwellings that are flats or apartments
Percentage of dwellings owned without a mortgage
Percentage of dwellings with a mortgage
Percentage of dwellings rented
Percentage of private dwellings unoccupied on Census night
Castlecrag work
- Employment to population
- 59.8%
- Unemployment rate
- 4.2%
- Year 12 or above
- 88.1%
Employed persons as a percentage of population aged 15+
Unemployed persons as a percentage of the labour force
Percentage with Year 12 or equivalent as highest school level
Nearby suburb profiles (near 2068)
Compare Castlecrag with nearby suburbs
Castlecrag in numbers
Castlecrag had 2,965 residents at the 2021 Census. The median age is 47, 15% above the typical NSW suburb. The average household has 3 people. 31.9% of residents were born overseas.
Among occupied homes, 45% own their home outright, 35.7% are paying a mortgage, 10.1% rent. Separate houses make up 90.3% of dwellings, with 1.1% in flats or apartments. Median rent was $1,010/wk, 153% above the typical NSW suburb.
Median household income was $4,675/wk, 159% above the typical NSW suburb. The unemployment rate on Census night was 4.2%. 88.1% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 10 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 0.9% (from 2,939 to 2,965). Median rent moved from $950/wk to $1,010/wk (+6.3%).
Castlecrag suburb FAQs
- What is the median rent in Castlecrag, NSW?
- The median weekly rent in Castlecrag was $1,010/wk at the 2021 Census (ABS).
- How many people live in Castlecrag, NSW?
- Castlecrag had 2,965 residents at the 2021 Census, up 0.9% from 2016.
- What is the median household income in Castlecrag?
- Median household income in Castlecrag was $4,675/wk at the 2021 Census.
- Do most people rent or own in Castlecrag?
- 10.1% of occupied homes in Castlecrag were rented, 45% were owned outright and 35.7% were owned with a mortgage.
About this Castlecrag suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Castlecrag. Where shown, 2016 values come from the 2016 State Suburbs (SSC) profile, linked via ABS geographic correspondence — boundaries are not always identical. Medians may be suppressed for very small areas. This is not financial or relocation advice — use it alongside current market data.
Source: ABS Census 2021. Methodology · Richest suburbs in Sydney