Silverdale (NSW)

NSW

Silverdale (NSW) is a growing suburb in NSW with 4,543 residents.

SAL code: 13559
SA2: 124031465
Population: 4,543
LGA: Wollondilly

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Silverdale (NSW) suburb boundary

Silverdale (NSW), NSW had 4,543 residents at the 2021 Census, with the broader statistical area showing a 28.1% growth over the last five years. The predominant age group is 5-14 years, and the median age sits at 35. Households are most often couples with children, and those with a mortgage repay a median of $2,600 a month. Around 90.1% of homes are owner-occupied, with the largest single tenure being owned with a mortgage at 60.6%. Most dwellings are separate houses, making up 99.8% 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

4,543

Suburb · Census 2021

5-Year Growth

+28.1%

3yr: +16.9% · 10yr: +39.9%

SA2 · 5yr

Household Income

$2,654/wk

Suburb · Census 2021 median

Median Age

Suburb · Census 2021

Socio-Economic Index

7/10

SA2 · middle-range

Unemployment

1.4%

SA4 · Q4 2025

Hospitals

Not available

No data for this suburb

Childcare services

1 long day, 1 OSHC

Parks & green space

Parks, reserves

Transport stops

GTFS stops

Dwelling approvals

117

Wollondilly · Feb 2026

Median Weekly Rent

$750/wk+7.1% YoY2026 Q1

Postcode-level

Based on NSW rental bond lodgements, aggregated at postcode level. All SALs sharing this postcode show the same median.

Median House Sale Price

$1,309,0000.0% YoY2026 Q1

House only

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 — Warragamba - Silverdale (SA2)

ABS publishes annual estimates only at SA2; Silverdale (NSW) suburb alone is ~4,543 (Census 2021).

Growth at a Glance

3yr: +16.9%5yr: +28.1%10yr: +39.9%Total: +57.1%

Population grew from 4,801 to 7,544 over 24 years, averaging 1.9% per year.

Government school catchment

Intake zone

Primary

Warragamba PS64.8%

The Oaks PS 34.9%
Wallacia PS 0.3%
Cobbitty PS 0.0%

Secondary

Glenmore Park HS65.0%

Camden HS 34.9%
Elderslie 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

ABS · 2021

Housing

Almost entirely detached houses (99.8%), owner-occupied (90%), built for families (55% are 4 bed).

Dwelling mix

Houses 100%

1,333 houses3 townhouses

Tenure

Owned 30%

Mortgage 61%

Number of bedrooms

1 bed

5 (0.4%)

2 bed

37 (2.8%)

3 bed

227 (17.1%)

4 bed

736 (55.4%)

5 bed

262 (19.7%)

6+ bed

61 (4.6%)

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

9 zones in suburb

Code	Zone	% covered	Area
RU2	ZoneRural	44.3%	21.47 km²
C1	ZoneEnvironmental	41.0%	19.85 km²
R5	ZoneResidential	5.2%	2.50 km²
SP2	ZoneSpecial use	3.4%	1.67 km²
R2	ZoneResidential	3.4%	1.66 km²
RU1	ZoneRural	0.9%	0.46 km²
E4	ZoneEnvironmental	0.7%	0.34 km²
C2	ZoneEnvironmental	0.5%	0.24 km²
RE1	ZoneRecreation	0.3%	0.15 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.