Overall score
Castle Hill
77.3/100
Mount Gambier
69.1/100
Castle Hill vs Mount Gambier suburb comparison (NSW vs SA)
Castle Hill for retirees and families; Mount Gambier for investment and value.
See which suburb leads on livability, safety, schools, and lifestyle.
Head to head
Visual comparison
Castle HillMount Gambier
Crime rate
Castle Hill
32.1 / 1k
Mount Gambier
58.7 / 1k
Nearby amenities
Castle Hill
530
Mount Gambier
554
Population
Castle Hill
40,874
Mount Gambier
25,591
Metric leadCastle Hill 6Mount Gambier 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 retireesCastle Hill
- Best for familiesCastle Hill
- Best for investmentMount Gambier
- Best for best valueMount Gambier
- Best for best schoolsCastle Hill
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 | Castle Hill | Mount Gambier |
|---|---|---|
| Overall score | 77.3/100 | 69.1/100 |
| Housing (desirability) | 37.8/100 | 55.7/100 |
| Crime rate | 32.1 / 1k | 58.7 / 1k |
| Schools & preschools | 8 | 20 |
| Parks & reserves | 28 | — |
| Public transport stops | 497 | 121 |
| Walkability | 100.0/100 | 100.0/100 |
| Nearby amenities | 530 | 554 |
| Planning activity | 124 | 201 |
| Population | 40,874 | 25,591 |
| SEIFA (IRSAD decile) | 10/10 | 1/10 |
Comparison summary
Castle Hill (NSW) is an energetic metro larger suburb where cafés and local life overlap, while Mount Gambier (SA) is a leafier hillside larger suburb with elevated outlooks. Mount Gambier sits among greener hillside streets, while Castle Hill keeps a flatter suburban layout.
Castle Hill pulls ahead on a quieter safety profile and public transport access, whereas Mount Gambier is the better pick for housing affordability and schools and education options. Castle Hill generally means more sought-after housing, while Mount Gambier leans toward more approachable housing costs.
Retirees and families may find Castle Hill the better fit, while investors and value-focused buyers are more likely to prefer Mount Gambier.