Aldinga Beach vs Sellicks Beach
A data-only, side-by-side comparison of Aldinga Beach and Sellicks Beach, two suburbs in South Australia — population, demographics, socio-economic profile and climate, drawn from public sources.
Key differences
- Aldinga Beach is the larger of the two, with about 10,667 residents to Sellicks Beach's 2,705.
- Sellicks Beach sits a little higher on the ABS SEIFA index of socio-economic advantage (942 to 925, where about 1000 is the national average).
- Median weekly household income is higher in Sellicks Beach ($1,424 to $1,297).
- Residents are typically older in Sellicks Beach (median age 41 to 39).
Aldinga Beach vs Sellicks Beach side by side
| Measure | Aldinga Beach | Sellicks Beach |
|---|---|---|
| Population (2021) | 10,667 | 2,705 |
| Median age | 39 | 41 |
| Median weekly household income | $1,297 | $1,424 |
| SEIFA score | 925 | 942 |
| Local government area | Onkaparinga | Onkaparinga |
| State / territory | South Australia | South Australia |
| Avg summer high (Jan) | 26.7°C | 26.7°C |
| Avg winter high (Jul) | 13.2°C | 13.2°C |
| Annual rainfall | 801 mm | 801 mm |
Climate figures are long-run monthly normals (Open-Meteo, ERA5 reanalysis).
Common questions
Is Aldinga Beach or Sellicks Beach bigger?
Aldinga Beach is larger, with about 10,667 residents at the 2021 Census compared with 2,705 in Sellicks Beach.
Is Aldinga Beach or Sellicks Beach warmer?
Aldinga Beach is generally warmer in summer, with an average January daytime high of 26.7°C compared with 26.7°C.