Northbridge (NSW), NSW
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Northbridge is a quiet, leafy pocket of Sydney's Lower North Shore, occupying a peninsula that reaches into Middle Harbour and is wrapped by bush and water on three sides. With no through traffic, it keeps an unhurried, village feel within easy reach of the harbour. The suburb takes its name from a sandstone suspension bridge completed in the early eighteen-nineties; built in a romantic Federation Gothic style with medieval flourishes, it is now known as the Long Gully Bridge and remains a local landmark linking the area to Cammeray. Early settlement centred on Fig Tree Point, where Sydney jeweller William Twemlow built a sandstone home cut from stone quarried on the estate. Today Northbridge offers bushland reserves, water views and a relaxed residential character close to Chatswood.
Among Australia's more advantaged suburbs
Northbridge (NSW) is more socio-economically advantaged than about 99% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1181, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Northbridge (NSW) at a glance
- Population (2021)
- 6,493
- Median age
- 44
- Median weekly household income
- $3,874
- SEIFA score
- 1181
- Coordinates
- -33.8112, 151.2175
Northbridge (NSW) demographics (2021 Census)
The figures below profile Northbridge (NSW) using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 29%, 20% of homes are rented, and 31% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 1,329 | 20% |
| Youth (15–24) | 799 | 12% |
| Young adults (25–44) | 1,125 | 17% |
| Mid-life (45–64) | 1,891 | 29% |
| Seniors (65+) | 1,351 | 21% |
Share of the 6,495 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 1,032 | 48% |
| Owned with a mortgage | 644 | 30% |
| Rented | 421 | 20% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 1,588 | 74% |
| Townhouses & semis | 136 | 6% |
| Flats & apartments | 412 | 19% |
Tenure and dwelling shares are of the roughly 2,142 occupied private dwellings in Northbridge (NSW).
- Median weekly rent
- $740
- Median monthly mortgage
- $4,649
- Average household size
- 2.9 people
- Median weekly family income
- $4,650
- Median weekly personal income
- $1,375
Community and culture
- Born overseas
- 1,938 (31%)
- Speaks a language other than English at home
- 1,319 (21%)
- Aboriginal and/or Torres Strait Islander
- 22 (0%)
Work and education
- Completed Year 12
- 4,036 (84%)
- Labour-force participation
- 59.5%
- Unemployment rate
- 3.7%
- Employed full-time
- 1,767
- Employed part-time
- 972
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Northbridge (NSW)
Based on 2014–2023 records, the warmest month in Northbridge (NSW) is January (average daytime high around 25.7°C) and the coolest is July (around 16.5°C). The area receives roughly 1084 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25.7°C | 19.3°C | 104 mm |
| Feb | 25.1°C | 19°C | 119 mm |
| Mar | 24°C | 18°C | 186 mm |
| Apr | 21.9°C | 15°C | 100 mm |
| May | 19.2°C | 11.7°C | 56 mm |
| Jun | 16.5°C | 9.8°C | 74 mm |
| Jul | 16.5°C | 8.7°C | 70 mm |
| Aug | 17.3°C | 9.2°C | 67 mm |
| Sep | 19.6°C | 11.3°C | 55 mm |
| Oct | 21.8°C | 13.7°C | 92 mm |
| Nov | 22.8°C | 15.5°C | 78 mm |
| Dec | 24.7°C | 17.5°C | 83 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Northbridge (NSW)
Where is Northbridge (NSW)?
Northbridge (NSW) is a suburb of New South Wales, Australia.
What is the population of Northbridge (NSW)?
At the 2021 Census, Northbridge (NSW) had a population of about 6,493.
Is Northbridge (NSW) an advantaged area?
Northbridge (NSW) has an ABS SEIFA score of 1181, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 99 out of 100 — more socio-economically advantaged than about 99% of Australian suburbs.
What is the weather like in Northbridge (NSW)?
Northbridge (NSW) has average daytime highs of about 21.3°C and overnight lows of about 14.1°C, with roughly 1,084 mm of rain across the year (based on 2014–2023 climate normals).
Does Northbridge (NSW) have high household incomes?
Northbridge (NSW) has one of the highest median weekly household incomes in New South Wales — the 15th-highest among suburbs with at least 1,000 residents at the 2021 Census ($3,874 per week).
Where Northbridge (NSW) ranks
Northbridge (NSW) appears in these data-driven guides — each a transparent sort on a single ABS figure shown on this page.
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