St Marys (NSW)
NSWSt Marys (NSW) is a growing suburb in NSW with 13,256 residents.
- SAL code
- 13658
- SA2
- 124051581
- Population
- 13,256
- LGA
- Penrith
St Marys (NSW), NSW had 13,256 residents at the 2021 Census, with the broader statistical area showing a 7.6% growth over the last five years. The predominant age group is 25-34 years, and the median age sits at 34. Households are most often couples with children, and those with a mortgage repay a median of $1,847 a month. Around 45.8% of homes are owner-occupied, with the largest single tenure being rented at 54.2%. Most dwellings are separate houses, making up 51.8% of the suburb's housing stock. The suburb has 29 parks and reserves mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?13,256
Suburb · Census 2021
5-Year Growth
+7.6%
3yr: +5.9% · 10yr: +15.8%
SA2 · 5yr
Household Income
$1,437/wk
Suburb · Census 2021 median
Median Age
34
Suburb · Census 2021
Socio-Economic Index
?1/10
SA2 · more disadvantaged
Unemployment
?9.0%
SA4 · Q4 2025
Schools
5
3 primary, 2 secondary
Hospitals
No data for this suburb
Childcare services
?17
10 long day, 5 OSHC
Parks & green space
?29
Parks, reserves
Transport stops
?57
GTFS stops
Dwelling approvals
?270
Penrith · Feb 2026
Median Weekly Rent
Based on NSW rental bond lodgements, aggregated at postcode level. All SALs sharing this postcode show the same median.
Median House Sale Price
Source: state Valuer-General (suburb-level quarterly medians).
→ Calculate stamp duty on this suburb's median price→ Estimate mortgage repayments→ Calculate rental yield (price + median rent)
Population over time — St Marys - North St Marys (SA2)
ABS publishes annual estimates only at SA2; St Marys (NSW) suburb alone is ~13,256 (Census 2021).
Growth at a Glance
Population grew from 13,398 to 18,757 over 24 years, averaging 1.4% per year.
Schools
5 in suburbGovernment school catchment
Intake zonePrimary
St Marys PS27.7%
- Ropes Crossing PS 19.7%
- St Marys SPS 18.3%
- St Marys NPS 16.2%
- Jordan Springs PS 8.8%
- Oxley Park PS 8.1%
- Bennett Rd PS 0.4%
- Claremont Meadows PS 0.0%
- Werrington PS 0.0%
- Werrington County PS 0.0%
- Banks PS 0.0%
Secondary
Chifley SC65.2%
- Colyton HS 33.8%
- St Marys Snr HS 23.4%
- Kingswood HS 0.8%
- Cambridge Park HS 0.1%
- St Clair HS 0.0%
Source: NSW Department of Education — School Intake Zones. Boundaries can be amended without notice; confirm with the school before relying on enrolment.
Profile
Census snapshot
Housing
Public housing 5.4%Predominantly detached houses (51.8%), rental-heavy (54.2% renting), built for families (49% are 3 bed).
Dwelling mix
Tenure
Number of bedrooms
Bushfire & flood risk
Hazard data is not yet available for NSW.
Source when available: NSW Rural Fire Service (BFPL) and NSW DPHI EPI Flood.
Planning zones
15 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| E4 | ZoneEnvironmental | 26.9% | 2.61 km² |
| R3 | ZoneResidential | 15.6% | 1.51 km² |
| R2 | ZoneResidential | 15.1% | 1.46 km² |
| RE1 | ZoneRecreation | 11.2% | 1.08 km² |
| SP2 | ZoneSpecial use | 6.8% | 0.66 km² |
| RE2 | ZoneRecreation | 5.3% | 0.51 km² |
| C2 | ZoneEnvironmental | 4.9% | 0.48 km² |
| MU1 | ZoneBusiness | 3.9% | 0.38 km² |
| R4 | ZoneResidential | 3.9% | 0.37 km² |
| RP | ZoneOther | 2.0% | 0.20 km² |
| EM | ZoneOther | 1.5% | 0.15 km² |
| E3 | ZoneEnvironmental | 1.4% | 0.13 km² |
| RO | ZoneOther | 0.8% | 0.08 km² |
| SP1 | ZoneSpecial use | 0.6% | 0.06 km² |
| RW | ZoneOther | 0.3% | 0.03 km² |
Source: NSW DPHI EPI Land Zoning (ZONE_NSW/2026-04-29/1eccf1a530fa1be5) · As of Apr 2026. Zone boundaries are amended periodically; verify the exact property with the relevant council before relying on permitted use.