Overall score
Noarlunga Downs
46.7/100
O'Sullivan Beach
48.8/100
Noarlunga Downs vs O'Sullivan Beach, SA suburb comparison
Noarlunga Downs for retirees and families; O'Sullivan Beach for beach lifestyle and investment.
See which suburb leads on livability, safety, schools, and lifestyle.
Head to head
Visual comparison
Noarlunga DownsO'Sullivan Beach
Crime rate
Noarlunga Downs
54.7 / 1k
O'Sullivan Beach
56.4 / 1k
Nearby amenities
Noarlunga Downs
82
O'Sullivan Beach
84
Population
Noarlunga Downs
4,031
O'Sullivan Beach
1,844
Metric leadNoarlunga Downs 6O'Sullivan Beach 31 tiedacross 10 compared metrics
Livability profile
Desirability pillars scored 0–100 vs comparable suburbs
Quick verdicts
Clearer edge on lifestyle fit (score gap ≥ 3)
- Best for retireesNoarlunga Downs
- Best for familiesNoarlunga Downs
- Best for beach lifestyleO'Sullivan Beach
- Best for investmentO'Sullivan Beach
- Best for best schoolsO'Sullivan Beach
Audience fit
Who each suburb suits — composite scores out of 100
All metrics
Side-by-side scores for every compared metric.
Full comparison table
Exact figures for every metric — winner highlighted in bold.
| Category | Noarlunga Downs | O'Sullivan Beach |
|---|---|---|
| Overall score | 46.7/100 | 48.8/100 |
| Housing (desirability) | 77.5/100 | 73.0/100 |
| Crime rate | 54.7 / 1k | 56.4 / 1k |
| Schools & preschools | 2 | 2 |
| Public transport stops | 34 | 16 |
| Walkability | 30.0/100 | 51.0/100 |
| Nearby amenities | 82 | 84 |
| Planning activity | 36 | 83 |
| Population | 4,031 | 1,844 |
| SEIFA (IRSAD decile) | 2/10 | 1/10 |
Comparison summary
Noarlunga Downs is a well-serviced metro mid-sized suburb with plenty happening nearby, while O'Sullivan Beach is a beachside smaller community where the coast sets the tone. Where O'Sullivan Beach is shaped by the coast, Noarlunga Downs offers a more landlocked suburban rhythm.
On the data, Noarlunga Downs is stronger for housing affordability and a quieter safety profile; O'Sullivan Beach answers with walkability and nearby cafés and amenities.
Choose Noarlunga Downs if you are weighing retirees and families; lean toward O'Sullivan Beach for people chasing a beach lifestyle and investors.