Arncliffe vs Rockdale
A data-only, side-by-side comparison of Arncliffe and Rockdale, two suburbs in New South Wales — population, demographics, socio-economic profile and climate, drawn from public sources.
Key differences
- Rockdale is the larger of the two, with about 15,475 residents to Arncliffe's 12,023.
- Arncliffe sits a little higher on the ABS SEIFA index of socio-economic advantage (1033 to 1012, where about 1000 is the national average).
- Median weekly household income is higher in Arncliffe ($2,046 to $1,906).
Arncliffe vs Rockdale side by side
| Measure | Arncliffe | Rockdale |
|---|---|---|
| Population (2021) | 12,023 | 15,475 |
| Median age | 34 | 34 |
| Median weekly household income | $2,046 | $1,906 |
| SEIFA score | 1033 | 1012 |
| Local government area | Bayside (NSW) | Bayside (NSW) |
| State / territory | New South Wales | New South Wales |
| Avg summer high (Jan) | 26.6°C | 26.6°C |
| Avg winter high (Jul) | 17.2°C | 17.2°C |
| Annual rainfall | 902 mm | 902 mm |
Climate figures are long-run monthly normals (Open-Meteo, ERA5 reanalysis).
Common questions
Is Arncliffe or Rockdale bigger?
Rockdale is larger, with about 15,475 residents at the 2021 Census compared with 12,023 in Arncliffe.
Is Arncliffe or Rockdale warmer?
Arncliffe is generally warmer in summer, with an average January daytime high of 26.6°C compared with 26.6°C.