St Marys (SA 5042): property prices & suburb profile

St Marys property prices

The typical St Marys house sold for around $1,036,000 in the year to 2026-Q2, +136.0% over 10 years and +86.7% over 5 years.

• Medians are published by Land Services SA per suburb; we do not have individual sale records for this state, so there is no street-level breakdown on this page (our New South Wales pages have one).
• The headline figure is a sales-weighted average of the last four quarterly medians, not a median of individual sales, because one quiet quarter in a single suburb can move a quarterly median by more than the market did. The chart below plots each quarter as published.
• Change over time reflects what sold in each period, not the value of any one home: a run of large or small homes moves it.
• Periods with fewer than 5 recorded sales are excluded.

St Marys medians by quarter

The most recent quarter on record for St Marys is 2026-Q2.

• Sale counts are shown so you can judge how solid each median is.

Who lives in St Marys

St Marys has a median age of 35 and a median household income of $1,490 a week.

• Figures labelled St Marys are for the suburb boundary itself (ABS 2021 Census). Anything labelled SA2 or postcode covers a wider area: SA2 "Panorama" and postcode 5042 both extend beyond St Marys.
• SEIFA decile 1 is the lowest tenth of Australian areas on that index and 10 the highest. The four indices measure different things and often disagree, which is why all four are shown: a suburb can rank high on education and occupation while ranking mid on economic resources.

Schools in St Marys

The only school in St Marys sits at the 80th percentile nationally on ACARA's socio-educational index.

• ICSEA is ACARA's socio-educational index (average 1000). It describes the family backgrounds of the students enrolled, NOT how well a school teaches: a lower ICSEA means a less advantaged intake, not a worse school.
• Percentiles are ACARA's own national ranking, so the Australia bar is a published figure rather than our arithmetic. Each area shows the median of the mainstream schools sitting inside it; special schools are listed in the table but excluded from the medians.
• Public school intake zones are not published in our dataset for this state, so confirm catchments with the school.

Suburbs near St Marys

St Marys's typical house price of $1,036,000 is the 24th highest of the 54 Adelaide South suburbs we cover.

• Aberfoyle Park 5159

  $909,000 typical house price

• Aldinga Beach 5173

  $855,000 typical house price

• Belair 5052

  $1,293,000 typical house price

• Bellevue Heights 5050

  $1,156,000 typical house price

• Blackwood 5051

  $1,056,000 typical house price

• Christie Downs 5164

  $749,000 typical house price

• Christies Beach 5165

  $906,000 typical house price

• Clarence Gardens 5039

  $1,463,000 typical house price

All Adelaide South suburb research

St Marys: common questions

How much does a house cost in St Marys?

About $1,036,000 across the 12 months to 2026-Q2, from 33 recorded sales. That is a sales-weighted average of the four quarterly medians published by Land Services SA: a single quarter in one suburb can swing on a handful of sales.

Have St Marys prices gone up?

Prices have risen 136.0% over 10 years and moved +86.7% over 5 years, comparing the latest rolling year with the same window a decade earlier. These movements reflect the mix of homes sold, not the change in value of a specific property.

Can I see St Marys prices street by street?

Not yet. SA publishes suburb-level medians rather than individual sale records, so street-level medians are only available on our New South Wales pages.

Which schools are in St Marys?

St Marys has 1 ACARA-registered school: St Bernadette's School.

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