Thirlmere
NSWThirlmere is a growing suburb in NSW with 4,986 residents.
- SAL code
- 13863
- SA2
- 123031447
- Population
- 4,986
- LGA
- Wollondilly
Thirlmere, NSW had 4,986 residents at the 2021 Census, with the broader statistical area showing a 21.1% growth over the last five years. The predominant age group is 25-34 years, and the median age sits at 38. Households are most often couples with children, and those with a mortgage repay a median of $2,300 a month. Around 75.3% of homes are owner-occupied, with the largest single tenure being owned with a mortgage at 43.4%. Most dwellings are separate houses, making up 90.6% of the suburb's housing stock. The suburb has 6 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
?4,986
Suburb · Census 2021
5-Year Growth
+21.1%
3yr: +14.6% · 10yr: +34.4%
SA2 · 5yr
Household Income
$1,708/wk
Suburb · Census 2021 median
Median Age
38
Suburb · Census 2021
Socio-Economic Index
?6/10
SA2 · middle-range
Unemployment
?3.3%
SA4 · Q4 2025
Schools
1
1 primary
Hospitals
No data for this suburb
Childcare services
?5
4 long day, 3 OSHC
Parks & green space
?6
Parks, reserves
Transport stops
?2
GTFS stops
Dwelling approvals
?117
Wollondilly · 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)
Safety & Crime
2025 Q4Reported incidents from NSW police. Offence rates may not reflect all crime.
Population over time — Picton - Tahmoor - Buxton (SA2)
ABS publishes annual estimates only at SA2; Thirlmere suburb alone is ~4,986 (Census 2021).
Growth at a Glance
Population grew from 14,113 to 22,603 over 24 years, averaging 2.0% per year.
Schools
1 in suburbGovernment school catchment
Intake zonePrimary
Thirlmere PS86.9%
- Buxton PS 4.9%
- Tahmoor PS 0.9%
Secondary
No catchment
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 0.5%Almost entirely detached houses (90.6%), owner-occupied (75%), built for families (42% are 4 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
12 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| RU1 | ZoneRural | 36.6% | 12.01 km² |
| C1 | ZoneEnvironmental | 27.5% | 9.01 km² |
| RU4 | ZoneRural | 14.0% | 4.61 km² |
| R5 | ZoneResidential | 5.3% | 1.75 km² |
| R2 | ZoneResidential | 5.3% | 1.74 km² |
| SP2 | ZoneSpecial use | 4.9% | 1.60 km² |
| RU2 | ZoneRural | 2.6% | 0.86 km² |
| C3 | ZoneEnvironmental | 1.4% | 0.45 km² |
| C2 | ZoneEnvironmental | 1.3% | 0.44 km² |
| RE1 | ZoneRecreation | 0.6% | 0.19 km² |
| E1 | ZoneEnvironmental | 0.3% | 0.09 km² |
| R3 | ZoneResidential | 0.3% | 0.08 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.