Population
−25.1% since 2016.
Castle Rock, NSW
Castle Rock had a population of 131 at the 2021 Census (−25.1% since 2016). Median age 42.0. Median weekly household income $2,389. Source: ABS Census 2021, via Censible. Census 2026 data arrives June 2027.
Castle Rock at a glance
What the 2021 Census says, compared with New South Wales.
Between the 2016 and 2021 censuses, Castle Rock's population shrank by 25.1% to 131, slower than New South Wales as a whole (+7.9%). With a median age of 42.0, it is older than the NSW average (38.4). Children under 10 make up 16.0% of residents, and people aged 70 and over 4.6%.
34.2% of households rent, close to the NSW average of 33.1%. 28.9% own their home outright. Almost every home is a house; flats and apartments are 0.0% of homes. The 2021 Census counted 38 households.
The median household earns $2,389 a week, above the NSW average of $1,829.
5.2% of residents were born overseas, fewer than the NSW average of 31.0%. 0.0% use a language other than English at home. 21.7% report no religion, lower than the NSW average (35.7%).
Key figures
2021 Census, Castle Rock beside NSW and Australia.
| Measure | Castle Rock | NSW | Australia |
|---|---|---|---|
| Population | 131 | 8,072,171 | 25,422,828 |
| Growth since 2016 | −25.1% | +7.9% | +8.6% |
| Median age | 42.0 | 38.4 | 38.2 |
| Households | 38 | 2,900,456 | 9,275,123 |
| Flats and apartments | 0.0% | 21.8% | 14.3% |
| Renting | 34.2% | 33.1% | 31.1% |
| Owned outright | 28.9% | 32.0% | 31.4% |
| Median household income a week | $2,389 | $1,829 | $1,747 |
| Median rent a week | $350 | $423 | $376 |
| Median mortgage repayment a month | – | $2,142 | $1,866 |
| Born overseas | 5.2% | 31.0% | 29.3% |
| Other language at home | 0.0% | 28.2% | 23.6% |
| No religion | 21.7% | 35.7% | 41.9% |
Source: ABS Census 2021, via Censible. How the figures are built
Population and age
Each census since 2011, and the age profile in 2021.
Age
Median age 42.0, against 38.4 for New South Wales.
Source: ABS Census 2021, via Censible. How the figures are built
Cultural background
The largest groups in Castle Rock at the 2021 Census.
Ancestry
Languages at home
Country of birth
Source: ABS Census 2021, via Censible. How the figures are built
Around Castle Rock
The places it belongs to, sits beside and contains.
Part of
Nearby
Explore Castle Rock in Censible
Every census figure for Castle Rock, mapped and compared with any other place. A free account takes a minute.