Killarney Heights
NSWKillarney Heights is a stable suburb in NSW with 4,502 residents.
- SAL code
- 12138
- SA2
- 122031427
- Population
- 4,502
- LGA
- Northern Beaches
Killarney Heights, NSW had 4,502 residents at the 2021 Census, with the broader statistical area showing a 1.8% growth over the last five years. The predominant age group is 45-54 years, and the median age sits at 43. Households are most often couples with children, and those with a mortgage repay a median of $3,500 a month. Around 87.6% of homes are owner-occupied, with the largest single tenure being owned outright at 48.4%. Most dwellings are separate houses, making up 96.3% of the suburb's housing stock. The suburb has 10 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
?4,502
Suburb · Census 2021
5-Year Growth
+1.8%
3yr: +2.4% · 10yr: +2.7%
SA2 · 5yr
Household Income
$3,426/wk
Suburb · Census 2021 median
Median Age
43
Suburb · Census 2021
Socio-Economic Index
?10/10
SA2 · least disadvantaged
Unemployment
?3.5%
SA4 · Q4 2025
Schools
2
1 primary, 1 secondary
Hospitals
No data for this suburb
Childcare services
?2
1 long day, 1 OSHC
Parks & green space
?10
Parks, reserves
Transport stops
?16
GTFS stops
Dwelling approvals
?32
Northern Beaches · 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 — Forestville - Killarney Heights (SA2)
ABS publishes annual estimates only at SA2; Killarney Heights suburb alone is ~4,502 (Census 2021).
Growth at a Glance
Population grew from 12,098 to 13,533 over 24 years, averaging 0.5% per year.
Schools
2 in suburbGovernment school catchment
Intake zonePrimary
Killarney Hts PS64.9%
- Frenchs Forest PS 21.8%
- Balgowlah NPS 9.6%
- Forestville PS 1.8%
Secondary
Killarney Hts HS67.5%
- NBSC Balgowlah Boys 9.6%
- NBSC Mackellar Girls 9.6%
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
Almost entirely detached houses (96.3%), owner-occupied (88%), built for families (47% 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
7 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| C1 | ZoneEnvironmental | 51.5% | 2.19 km² |
| R2 | ZoneResidential | 34.9% | 1.48 km² |
| RE1 | ZoneRecreation | 7.3% | 0.31 km² |
| SP2 | ZoneSpecial use | 3.7% | 0.16 km² |
| W1 | ZoneWaterway | 2.0% | 0.08 km² |
| RE2 | ZoneRecreation | 0.4% | 0.02 km² |
| E1 | ZoneEnvironmental | 0.2% | 0.01 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.