Suburb comparison
South Penrith vs St Marys — which Sydney suburb suits you?
The key differences: South Penrith has more schools within the postcode. The table below covers all available metrics.
Last refreshed April 2026 (most cards). Per-card sources show exact dates.
MetricSouth PenrithSt Marys
Median house price$951K$958K▲
Median unit price$750K▲$636K
Median weekly rent$580/wk$580/wk
Annual price growth+11.5%+12.5%▲
SEIFA advantage decile5/10▲2/10
Flood zone coverage——
Bushfire zone coverage28.3%27.1%▲
Schools in postcode11▲9
Choose South Penrith if...
- You want a lower entry price for a house
- Socio-economic advantage score matters to you
- School options within walking distance matter
- South Penrith leads on 3 of the 6 head-to-head metrics
Choose St Marys if...
- St Marys leads on 3 of the 6 head-to-head metrics
Common questions
- Is South Penrith or St Marys more expensive?
- St Marys has the higher median house price ($958K) compared with $951K in South Penrith.
- Which is better for renters — South Penrith or St Marys?
- Median weekly rent is $580/wk in South Penrith and $580/wk in St Marys, making St Marys the more affordable rental market.
- Is South Penrith or St Marys at higher flood risk?
- Flood mapping coverage varies by postcode — see the flood risk pages for both suburbs for authoritative NSW data.
- How many schools are in South Penrith vs St Marys?
- South Penrith has 11 schools in the postcode, and St Marys has 9. Note that school catchments can extend across postcode boundaries.