St Marys Demographics: Population, Age & Income Profile (TAS)
Liveability Score
5.2/10St Marys has a medium demographic profile typical of Tasmania suburbs
Key Facts
- Median Age
- 42 years (state avg)
- Median Household Income
- $1,099/wk (state avg)
- Families with Children
- 28.3% of households
- Home Ownership
- 69.8% own — 27.8% rent
- Postcode
- 7215
- Highest high-risk exposure
- 13.2% of land (surface flood)
Demographics Analysis
St Marys in Tasmania reflects the broader demographic characteristics of the region. According to the Australian Bureau of Statistics (ABS) 2021 Census, the typical household in Tasmania has a median weekly income of around $1,099, with a median age of 42 years.
The ABS reports that 28.3% of households in Tasmania are couples with children, while 28.7% are couples without children. Lone person households account for 27.9% of households. This family composition data helps home buyers understand the neighbourhood character and amenity demand.
Home ownership rates in Tasmania show that 69.8% of households own their home (with or without a mortgage), while 27.8% rent. These tenure patterns affect property turnover rates, rental demand, and neighbourhood stability — all important factors for home buyers evaluating St Marys.
Climate risk is an increasingly important factor for property buyers evaluating suburbs like St Marys. 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 St Marys property to understand how climate projections may affect your investment.
St Marys (postcode 7215) 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 (13.2% of land in high-risk zones), extreme wind (9.1% of land in high-risk zones), riverine flood (3.1% of land in high-risk zones). Exposure is not uniform across St Marys — 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
Develop a Bushfire Management Plan
ImmediateCreate a comprehensive plan for bushfire preparedness, including clearing vegetation, maintaining firebreaks, and establishing evacuation routes.
Est. cost: Low
Upgrade Drainage Infrastructure
Near-termImprove drainage systems to reduce the risk of flooding during heavy rainfall events.
Est. cost: Medium
Implement a Heatwave Action Plan
Near-termDevelop a plan to protect vulnerable populations during heatwaves, including establishing cooling centers and providing public awareness campaigns.
Est. cost: Low
Promote Water Conservation
Long-termEncourage water conservation measures to reduce water stress during periods of drought and heat.
Est. cost: Low
Community Education Programs
Near-termRun workshops and distribute information on how residents can prepare for and respond to climate-related hazards.
Est. cost: Low
Council & Emergency Services
Explore St Marys Risk Reports
View other climate risk assessments for St Marys:
Frequently Asked Questions
What is the population of St Marys?
Population data for St Marys 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 Tasmania 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 St Marys?
The median age for Tasmania is 42 years according to the 2021 ABS Census, which serves as a reference point for St Marys. 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 St Marys?
The median weekly household income in Tasmania is $1,099 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 St Marys?
The demographic profile of St Marys is broadly shaped by its location within Tasmania. According to the ABS Census, 28.3% of households in the state are couples with children, while 28.7% are couples without children. The overall population of Tasmania has a median age of 42 — use this as context when assessing the demographic character of St Marys.
What share of St Marys is exposed to high surface flood risk?
ClimateNest's hazard overlay maps 13.2% of St Marys in high-risk zones for surface flood, with a further 60.7% 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 St Marys Safe from Climate Risk?
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