Illawong
NSWIllawong is a declining suburb in NSW with 7,427 residents.
- SAL code
- 11982
- SA2
- 128021534
- Population
- 7,427
- LGA
- Sutherland
Illawong, NSW had 7,427 residents at the 2021 Census, with the broader statistical area roughly steady over the last five years. The predominant age group is 55-64 years, and the median age sits at 44. Households are most often couples with children, and those with a mortgage repay a median of $2,976 a month. Around 92.0% of homes are owner-occupied, with the largest single tenure being owned outright at 50.2%. Most dwellings are separate houses, making up 92.5% of the suburb's housing stock. The suburb has 9 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
?7,427
Suburb · Census 2021
5-Year Growth
-0.2%
3yr: +1.1% · 10yr: -3.1%
SA2 · 5yr
Household Income
$2,778/wk
Suburb · Census 2021 median
Median Age
44
Suburb · Census 2021
Socio-Economic Index
?10/10
SA2 · least disadvantaged
Unemployment
?2.1%
SA4 · Q4 2025
Schools
1
1 primary
Hospitals
No data for this suburb
Childcare services
?4
2 long day, 2 OSHC
Parks & green space
?9
Parks, reserves
Transport stops
?41
GTFS stops
Dwelling approvals
?69
Sutherland · 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 — Illawong - Alfords Point (SA2)
ABS publishes annual estimates only at SA2; Illawong suburb alone is ~7,427 (Census 2021).
Growth at a Glance
Population grew from 12,003 to 10,621 over 24 years, averaging -0.5% per year.
Schools
1 in suburbGovernment school catchment
Intake zonePrimary
Illawong PS50.0%
- Tharawal PS 50.0%
- Bangor PS 0.0%
- Menai PS 0.0%
Secondary
Menai HS100.0%
- Lucas Hts CS 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
Almost entirely detached houses (92.5%), owner-occupied (92%), built for families (53% 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
10 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| C4 | ZoneEnvironmental | 44.4% | 2.11 km² |
| C2 | ZoneEnvironmental | 28.3% | 1.35 km² |
| C3 | ZoneEnvironmental | 9.6% | 0.46 km² |
| C1 | ZoneEnvironmental | 7.5% | 0.36 km² |
| SP2 | ZoneSpecial use | 3.0% | 0.14 km² |
| RE1 | ZoneRecreation | 2.7% | 0.13 km² |
| R2 | ZoneResidential | 2.3% | 0.11 km² |
| W1 | ZoneWaterway | 1.6% | 0.08 km² |
| E1 | ZoneEnvironmental | 0.3% | 0.02 km² |
| SP1 | ZoneSpecial use | 0.1% | 6,672 m² |
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.