Clontarf (NSW)

NSW

Clontarf (NSW) is a declining suburb in NSW with 1,746 residents.

SAL code: 10934
SA2: 122011418
Population: 1,746
LGA: Northern Beaches

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Clontarf (NSW) suburb boundary

Clontarf (NSW), NSW had 1,746 residents at the 2021 Census, with the broader statistical area showing a 0.8% decline over the last five years. The predominant age group is 55-64 years, and the median age sits at 47. Households are most often couples with children, and those with a mortgage repay a median of $5,317 a month. Around 92.3% of homes are owner-occupied, with the largest single tenure being owned outright at 55.7%. Most dwellings are separate houses, making up 95.4% of the suburb's housing stock. The suburb has 2 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

1,746

Suburb · Census 2021

5-Year Growth

-0.8%

3yr: +1.6% · 10yr: -0.1%

SA2 · 5yr

Household Income

$4,609/wk

Suburb · Census 2021 median

Median Age

Suburb · Census 2021

Socio-Economic Index

10/10

SA2 · least disadvantaged

Unemployment

3.8%

SA4 · Q4 2025

Hospitals

Not available

No data for this suburb

Childcare services

Not available

No data for this suburb

Parks & green space

Parks, reserves

Transport stops

GTFS stops

Dwelling approvals

Northern Beaches · Feb 2026

Median Weekly Rent

$2,325/wk+57.6% 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

$6,538,000+52.0% YoY2025 Q4

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 — Balgowlah - Clontarf - Seaforth (SA2)

ABS publishes annual estimates only at SA2; Clontarf (NSW) suburb alone is ~1,746 (Census 2021).

Growth at a Glance

3yr: +1.6%5yr: -0.8%10yr: -0.1%Total: +13.5%

Population grew from 18,445 to 20,936 over 24 years, averaging 0.5% per year.

Government school catchment

Intake zone

Primary

Balgowlah Hts PS

Secondary

NBSC Balgowlah Boys100.0%

NBSC Mackellar Girls 100.0%

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 (95.4%), owner-occupied (92%), built for families (48% are 4 bed).

Dwelling mix

Houses 95%

544 houses26 townhouses

Tenure

Owned 56%

Mortgage 37%

Number of bedrooms

1 bed

4 (0.7%)

2 bed

16 (2.9%)

3 bed

117 (21.1%)

4 bed

268 (48.3%)

5 bed

131 (23.6%)

6+ bed

19 (3.4%)

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

6 zones in suburb

Code	Zone	% covered	Area
R2	ZoneResidential	59.1%	0.51 km²
C1	ZoneEnvironmental	16.6%	0.14 km²
RE1	ZoneRecreation	8.2%	0.07 km²
C3	ZoneEnvironmental	7.0%	0.06 km²
C2	ZoneEnvironmental	5.1%	0.04 km²
SP2	ZoneSpecial use	0.9%	7,538 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.