Northbridge Demographics: Population, Age & Income Profile (WA)
Liveability Score
5.5/10Northbridge has a medium demographic profile typical of Western Australia suburbs
Key Facts
- Median Age
- 37 years (state avg)
- Median Household Income
- $1,496/wk (state avg)
- Families with Children
- 27.1% of households
- Home Ownership
- 67.2% own — 29.2% rent
- Postcode
- 6003
- Highest high-risk exposure
- 11.8% of land (surface flood)
Demographics Analysis
Northbridge in Western Australia reflects the broader demographic characteristics of the region. According to the Australian Bureau of Statistics (ABS) 2021 Census, the typical household in Western Australia has a median weekly income of around $1,496, with a median age of 37 years.
The ABS reports that 27.1% of households in Western Australia are couples with children, while 25.3% are couples without children. Lone person households account for 22.9% of households. This family composition data helps home buyers understand the neighbourhood character and amenity demand.
Home ownership rates in Western Australia show that 67.2% of households own their home (with or without a mortgage), while 29.2% rent. These tenure patterns affect property turnover rates, rental demand, and neighbourhood stability — all important factors for home buyers evaluating Northbridge.
Climate risk is an increasingly important factor for property buyers evaluating suburbs like Northbridge. Different demographic groups face different climate exposure profiles — families may prioritise heat safety near schools, while retirees may be more concerned about insurance costs in flood-prone areas. Get an address-level climate risk report for your Northbridge property to understand how climate projections may affect your investment.
Northbridge (postcode 6003) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are surface flood (11.8% of land in high-risk zones), bushfire (9.4% of land in high-risk zones), riverine flood (6.2% of land in high-risk zones). Exposure is not uniform across Northbridge — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.
Adaptation & Mitigation Actions
Improve stormwater drainage infrastructure
Near-termUpgrade drainage systems to handle increased rainfall intensity and reduce flood risk.
Est. cost: High
Implement bushfire management strategies
ImmediateConduct regular property maintenance, create firebreaks, and participate in community fire awareness programs.
Est. cost: Low
Develop a heatwave response plan
Near-termEstablish cooling centers, provide public education on heat safety, and ensure access to healthcare for vulnerable populations.
Est. cost: Medium
Protect coastal areas from erosion
Long-termImplement coastal protection measures, such as seawalls and beach nourishment, to mitigate the impacts of sea level rise and storm surges.
Est. cost: Very High
Promote water conservation
Near-termEncourage residents to reduce water consumption through water-efficient appliances and landscaping practices.
Est. cost: Low
Council & Emergency Services
Explore Northbridge Risk Reports
View other climate risk assessments for Northbridge:
Frequently Asked Questions
What is the population of Northbridge?
Population data for Northbridge comes from the ABS 2021 Census, the most recent national census. For the most current suburb-level population data, refer to ABS QuickStats or consult the Western Australia state government's population projections. Understanding population trends helps home buyers assess housing demand, infrastructure investment, and neighbourhood character.
What is the median age in Northbridge?
The median age for Western Australia is 37 years according to the 2021 ABS Census, which serves as a reference point for Northbridge. A younger median age often indicates more families and first home buyers, while older demographics suggest established households and potentially lower turnover. Both have implications for property demand and investment strategy.
What is the average household income in Northbridge?
The median weekly household income in Western Australia is $1,496 per week (ABS 2021 Census). Household income affects serviceability for mortgage lending, rental affordability, and the type of housing stock in demand within a suburb. Higher-income areas typically support stronger property values and faster capital growth. Combine demographic research with a climate risk report from ClimateNest for a complete property assessment.
What type of people live in Northbridge?
The demographic profile of Northbridge is broadly shaped by its location within Western Australia. According to the ABS Census, 27.1% of households in the state are couples with children, while 25.3% are couples without children. The overall population of Western Australia has a median age of 37 — use this as context when assessing the demographic character of Northbridge.
What share of Northbridge is exposed to high surface flood risk?
ClimateNest's hazard overlay maps 11.8% of Northbridge in high-risk zones for surface flood, with a further 78.4% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.
Is Northbridge Safe from Climate Risk?
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