Cultural diversity
Language used at home
About this topic
Language used at home shows which languages people speak in their home life and whether English or another language is used most often. It is a key indicator of cultural diversity and language retention within communities.
This topic is useful for planning communication, multicultural services, and local engagement. It should be analysed together with proficiency in English and birthplace, because language alone does not show migration history or support needs.
Interpretation notes
- The Census records the language used most often at home, so it does not capture every language a person can speak.
- Language used at home is not a measure of English proficiency, literacy, or migration history on its own.
Key insight
In 2021, English was the most common language used at home among residents in Castlecrag, accounting for 79.1% (2,338 people). This share was higher than Willoughby (C) (55.5%). Since 2016, the biggest change was in English, which increased by 2,192 people, while its share fell by 6.3 percentage points.
Section overview
Language used at home - Ranked by size
Castlecrag - Total persons (Usual residence)
This table summarises language used at home for Castlecrag in 2021 for persons, with comparison against Willoughby (C) and change since 2016.
Language used at home - Ranked by size snapshot
2021 distribution by category for Castlecrag, with comparison markers for Willoughby (C).
English
2021 count
2,338
% of total
79.1%
Change from 2016
-6.3pp
2,338
79.1%
-6.3pp
Mandarin
2021 count
127
% of total
4.3%
Change from 2016
-
127
4.3%
-
Cantonese
2021 count
122
% of total
4.1%
Change from 2016
-
122
4.1%
-
Not stated
2021 count
72
% of total
2.4%
Change from 2016
-12.2pp
72
2.4%
-12.2pp
French
2021 count
30
% of total
1.0%
Change from 2016
-
30
1.0%
-
Armenian
2021 count
27
% of total
0.9%
Change from 2016
-
27
0.9%
-
German
2021 count
26
% of total
0.9%
Change from 2016
-
26
0.9%
-
Japanese
2021 count
26
% of total
0.9%
Change from 2016
-
26
0.9%
-
Korean
2021 count
18
% of total
0.6%
Change from 2016
-
18
0.6%
-
Italian
2021 count
17
% of total
0.6%
Change from 2016
-
17
0.6%
-
Chart view
Language used at home - Ranked by size change
Absolute change in category counts between 2016 and 2021.
English
+2,192
-6.3pp
Not stated
+47
-12.2pp
Data table
Language used at home for Castlecrag. Language used at home - Ranked by size. 2021 and 2016 counts, percentages, and change compared with Willoughby (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Willoughby (C)% | Count | % | Willoughby (C)% | Count | pp | |
| English | 2,338 | 79.1% | 55.5% | 146 | 85.4% | 55.0% | +2,192 | -6.3pp |
| Mandarin | 127 | 4.3% | 12.9% | - | - | 12.1% | - | - |
| Cantonese | 122 | 4.1% | 7.8% | - | - | 7.4% | - | - |
| Not stated | 72 | 2.4% | 3.4% | 25 | 14.6% | 4.8% | +47 | -12.2pp |
| French | 30 | 1.0% | 0.5% | - | - | 0.5% | - | - |
| Armenian | 27 | 0.9% | 1.0% | - | - | 1.1% | - | - |
| German | 26 | 0.9% | 0.3% | - | - | 0.4% | - | - |
| Japanese | 26 | 0.9% | 2.4% | - | - | 2.4% | - | - |
| Korean | 18 | 0.6% | 2.3% | - | - | 3.3% | - | - |
| Italian | 17 | 0.6% | 0.8% | - | - | 1.0% | - | - |
| Total | 2,957 | 100.0% | 100.0% | 171 | 100.0% | 100.0% | +2,786 | 0.0pp |
Excludes languages spoken at home by fewer than 10 people.