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ABS 2021 Census · Updated 21 May 2026
Mount St John is a coastal suburb in Queensland, Australia, with a population of approximately 103, making it a boutique locality. Located approximately 1116 km from the Brisbane CBD, Mount St John is a coastal area in Queensland. The median household income is $49,348 per year.
Household earnings in Mount St John are below the state average, which may affect long-term capital growth. Seaside positioning attracts both owner-occupiers and holiday rental demand.
Official Australia Post postcode for Mount St John. 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 Mount St John 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.
Mount St John is a smaller community of 103 — about 2% of the Queensland suburb median (5,474) — so investors should factor in the narrower buyer pool and longer average time-on-market. Mount St John's median household income of $49,348/year is 45% below the Queensland suburb median ($90,298) — this is an affordability play where returns lean on yield and patient capital growth rather than demographic premium. The median weekly rent of $205 translates to approximately $10,660/year in gross rental income, setting the upper bound on yield before vacancy, rates, insurance and maintenance. Mount St John is 1116 km from Brisbane, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand. Only 27% of dwellings are separate houses (vs 77% state median), so this is a unit-heavy market where body-corporate decisions and strata supply meaningfully shape investor returns.
How Mount St John stacks up against the median of all Queensland suburbs in our dataset. Positive values mean Mount St John sits above the state median; negative means below.
| Metric | Mount St John | QLD median | Δ vs state |
|---|---|---|---|
| Population | 103 | 5,474 | -98% |
| Median household income | $49,348/yr | $90,298/yr | -45% |
| Median rent (weekly) | $205 | $385 | -47% |
| Distance to CBD | 1116 km | 62 km | +1700% |
| Separate houses | 27% | 77% | -50pp |
Pre-inspection briefing for Mount St John — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 103 means liquidity is thin and capital growth tends to lag the wider Queensland market over full cycles.
Gross rent of $205/week (~$10,660/year) sets the yield ceiling. Cross-check against your purchase price to confirm whether this suburb hits the 4–5% gross yield most Australian investors target.
Only 27% of dwellings are separate houses (vs 77% QLD median) — this is a unit and townhouse market, where cosmetic flips struggle against body-corporate restrictions, thinner after-reno uplift and competing new supply.
Run the numbers on a Mount St John property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Mount St John are modest for 2026 — incomes 45% below the QLD median of $90,298 and a population of 103 suggest gains will lag headline metro markets. Rents sit around $205/week, setting the baseline gross rental income at roughly $10,660/year — refine this against current listings before running your numbers. The EquitySight investment score of 34/100 places Mount St John in the lower tier of Australian suburbs we profile, and overall investor sentiment is cautious heading into the second half of 2026.
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Mount St John scores 34/100 on our EquitySight investment framework — a weak rating. That score is driven by a population of 103, median household income of $49,348/year and median weekly rent of $205. 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 Mount St John are a median household income of $49,348/year, a dwelling mix that is 27% 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.
Mount St John has a usual resident population of approximately 103, compared with a Queensland suburb median of 5,474 — 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.
Mount St John sits 1116 km straight-line from the Brisbane CBD. This is a regional market where CBD distance is only indicative — local industry diversity and commute alternatives matter more.
The most recent census recorded a median weekly rent of $205 in Mount St John, equating to approximately $10,660/year in gross rental income (state median $385/week). Market rents have typically drifted above the recorded figure — verify against current listings on realestate.com.au and Domain before making an offer.
A reliable median mortgage figure was not captured for Mount St John. Use our loan serviceability calculator to estimate a realistic monthly repayment for your target purchase price and deposit.
Census data was not complete enough in Mount St John to compute a clean rent-to-mortgage coverage. Use current listings to benchmark weekly rent, then plug your expected purchase price into our rental yield calculator to see whether the investment runs cash-flow positive or negative.
The main risks are a thin buyer pool (103 residents), interest-rate sensitivity, below-median household incomes ($49,348 vs $90,298 state median), a unit-heavy dwelling mix (27% houses) where body-corporate costs and apartment supply affect resale, the broader Queensland 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.