Overall score
O'Sullivan Beach
48.8/100
Port Noarlunga
45.2/100
O'Sullivan Beach vs Port Noarlunga, SA suburb comparison
O'Sullivan Beach for families and investment; Port Noarlunga for retirees.
See which suburb leads on livability, safety, schools, and lifestyle.
Head to head
Visual comparison
O'Sullivan BeachPort Noarlunga
Crime rate
O'Sullivan Beach
56.4 / 1k
Port Noarlunga
54.7 / 1k
Nearby amenities
O'Sullivan Beach
84
Port Noarlunga
185
Population
O'Sullivan Beach
1,844
Port Noarlunga
3,245
Metric leadO'Sullivan Beach 3Port Noarlunga 61 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 retireesPort Noarlunga
- Best for familiesO'Sullivan Beach
- Best for investmentO'Sullivan Beach
- Best for best valueO'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 | O'Sullivan Beach | Port Noarlunga |
|---|---|---|
| Overall score | 48.8/100 | 45.2/100 |
| Housing (desirability) | 73.0/100 | 63.1/100 |
| Crime rate | 56.4 / 1k | 54.7 / 1k |
| Schools & preschools | 2 | 2 |
| Public transport stops | 16 | 18 |
| Walkability | 51.0/100 | 49.0/100 |
| Nearby amenities | 84 | 185 |
| Planning activity | 83 | 41 |
| Population | 1,844 | 3,245 |
| SEIFA (IRSAD decile) | 1/10 | 4/10 |
Comparison summary
O'Sullivan Beach is a beachside smaller community where the coast sets the tone, while Port Noarlunga is a coastal mid-sized suburb with an easy, sea-led rhythm. O'Sullivan Beach sits near both coast and city, whereas Port Noarlunga is firmly coastal.
On the data, O'Sullivan Beach is stronger for housing affordability and walkability; Port Noarlunga answers with a quieter safety profile and public transport access. O'Sullivan Beach generally means more approachable housing costs, while Port Noarlunga leans toward more mid-market housing value.
Families and investors may find O'Sullivan Beach the better fit, while retirees are more likely to prefer Port Noarlunga.