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ABS 2021 Census · Updated 21 May 2026
St Peters is a well-established middle-ring suburb of Adelaide, Australia, with a population of approximately 3,231, making it a boutique locality. Located 3 km from the Adelaide CBD, St Peters is a middle ring area in South Australia. The median household income is $117,832 per year.
Strong household incomes in St Peters underpin solid property demand. Close CBD access strengthens tenant appeal and resale value.
Official Australia Post postcode for St Peters. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →Usual resident population at the most recent census.
Weekly median rent for occupied homes. Live rental data integration coming soon.
Annual median household income (before tax) across all households.
Straight-line distance from the suburb centroid to the nearest capital city CBD. Actual driving distance will be longer.
Estimated 1 school within or near this suburb.
Find schools near St Peters on My School →Estimated 1 park and green spaces near this suburb.
Monthly median mortgage repayment for households currently paying off a mortgage.
Proportion of separate houses versus units, townhouses, and other home types. Useful for investors assessing rental demand mix.
3,231 residents places St Peters squarely in the middle of the South Australia suburb size distribution (state median 3,699), with market depth comparable to most SA localities. Median household income of $117,832/year runs 46% above the South Australia suburb median of $80,964, indicating strong purchasing power and the type of demographic profile that tends to sustain premium property prices through market cycles. Median rent of $310/week (~$1,343/month) covers only 50% of the median mortgage of $2,700/month — the remaining $1,357/month must be funded from other income, so this suburb tilts toward capital growth rather than yield. At 3 km from the Adelaide CBD, St Peters sits inside the high-demand inner ring — properties here compete directly with the city's employment, transport and amenity networks.
Middle-ring locations like this one historically reward patient holders — focus on homes near catchment-zone schools and major transport. Local rents consume roughly 14% of household income — a useful sanity check on tenant affordability.
How St Peters stacks up against the median of all South Australia suburbs in our dataset. Positive values mean St Peters sits above the state median; negative means below.
| Metric | St Peters | SA median | Δ vs state |
|---|---|---|---|
| Population | 3,231 | 3,699 | -13% |
| Median household income | $117,832/yr | $80,964/yr | +46% |
| Median rent (weekly) | $310 | $320 | -3% |
| Median mortgage (monthly) | $2,700 | $1,616 | +67% |
| Distance to CBD | 3 km | 13 km | -77% |
| Separate houses | 66% | 73% | -7pp |
Pre-inspection briefing for St Peters — every item is derived from public datasets, with full citations in our data sources page.
Strong buy-and-hold fundamentals: household incomes run 46% above the South Australia suburb median ($117,832 vs $80,964), and the 3 km CBD distance keeps this suburb in the primary demand zone. In South Australia, suburbs with this profile have historically clustered in the upper tercile of 10-year capital growth.
Weak cash flow: $310/week rent covers only 50% of the $2,700/month median mortgage — a $1,357/month gap that must be funded from other income. This suburb is a capital-growth play, not a yield play.
With 66% houses in a 3,231-person market, renovation margins depend on individual street and aspect rather than any suburb-wide story — do comparable-sales analysis before committing capital.
Run the numbers on a St Peters property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →St Peters enters 2026 with a demographic tailwind — household incomes 46% above the South Australia suburb median of $80,964 and a population of 3,231 give it the depth and purchasing power to outperform the wider SA market over the next 12–18 months. Rental coverage runs at ~50% of the typical mortgage ($1,343/month rent vs $2,700/month repayment), meaning investors will rely on capital growth rather than yield. The EquitySight investment score of 85/100 places St Peters in the top tier of Australian suburbs we profile, and overall investor sentiment is constructive heading into the second half of 2026.
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St Peters scores 85/100 on our EquitySight investment framework — a strong rating. That score is driven by a population of 3,231, median household income of $117,832/year and median weekly rent of $310. Whether it fits your portfolio depends on whether you are targeting cash flow, capital growth, or a value-add renovation — all three are scored with suburb-specific numbers elsewhere on this page.
The main demand drivers in St Peters are proximity to Adelaide (3 km), an above-state-median household income of $117,832/year, a dwelling mix that is 66% separate houses, roughly 1 schools and 1 parks within the catchment. Together these shape both owner-occupier and tenant demand and are the factors we weight most heavily in the suburb's investment score.
St Peters has a usual resident population of approximately 3,231, compared with a South Australia suburb median of 3,699 — placing it in the lower half of the state's suburbs by size. Population is the clearest proxy for market depth: more residents mean more transactions and typically a shorter average days-on-market on resale.
St Peters sits 3 km straight-line from the Adelaide CBD. This is inner-ring territory — pricing competes directly with established Adelaide employment nodes.
The most recent census recorded a median weekly rent of $310 in St Peters, equating to approximately $16,120/year in gross rental income (state median $320/week). Market rents have typically drifted above the recorded figure — verify against current listings on realestate.com.au and Domain before making an offer.
The median monthly mortgage repayment in St Peters is $2,700, or approximately $32,400/year (vs $1,616/month state median). Stress-test your own borrowing at rates 1–2 percentage points above today's to make sure you can still service the loan through an RBA tightening cycle.
A median weekly rent of $310 works out to $1,343/month, covering 50% of the median mortgage repayment of $2,700/month. That leaves a $1,357/month shortfall (around $16,284/year before tax benefits), so a typical owner-occupier-priced property here is negatively geared. Actual cash flow depends on your deposit, loan terms, ownership costs and marginal tax rate — run the full numbers in our rental yield calculator.
The main risks are a thin buyer pool (3,231 residents), interest-rate sensitivity on the $2,700 median mortgage, the broader South Australia market cycle. Each of these is covered in the Risk Factors section above with suburb-specific numbers rather than generic warnings.
Every number on this page comes from the ABS 2021 Census of Population and Housing, Australia Post postcode reference data, and OpenStreetMap amenity tiles. The investment score, strategy verdicts, and comparison table are computed deterministically from those inputs — no opinion, no estimation. See our full methodology and the data sources and licences for the formulas we use.