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ABS 2021 Census · Updated 21 May 2026
Middle River is a regional centre in South Australia, Australia, with a population of approximately 23, making it a boutique locality. Located approximately 162 km from the Adelaide CBD, Middle River is a regional area in South Australia. The median household income is $58,448 per year.
Household earnings in Middle River are below the state average, which may affect long-term capital growth. Regional positioning means lower entry costs but potentially longer hold periods for capital gains.
Official Australia Post postcode for Middle River. 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 Middle River 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.
Middle River is a smaller community of 23 — about 1% of the South Australia suburb median (3,699) — so investors should factor in the narrower buyer pool and longer average time-on-market. Middle River's median household income of $58,448/year is 28% below the South Australia suburb median ($80,964) — this is an affordability play where returns lean on yield and patient capital growth rather than demographic premium. The median weekly rent of $210 translates to approximately $10,920/year in gross rental income, setting the upper bound on yield before vacancy, rates, insurance and maintenance. Middle River is 162 km from Adelaide, so the local market tracks regional employment and lifestyle drivers more than CBD-driven commuter demand. Only 28% of dwellings are separate houses (vs 73% state median), so this is a unit-heavy market where body-corporate decisions and strata supply meaningfully shape investor returns.
How Middle River stacks up against the median of all South Australia suburbs in our dataset. Positive values mean Middle River sits above the state median; negative means below.
| Metric | Middle River | SA median | Δ vs state |
|---|---|---|---|
| Population | 23 | 3,699 | -99% |
| Median household income | $58,448/yr | $80,964/yr | -28% |
| Median rent (weekly) | $210 | $320 | -34% |
| Distance to CBD | 162 km | 13 km | +1146% |
| Separate houses | 28% | 73% | -45pp |
Pre-inspection briefing for Middle River — every item is derived from public datasets, with full citations in our data sources page.
Limited buy-and-hold upside: a small population of 23 means liquidity is thin and capital growth tends to lag the wider South Australia market over full cycles.
Gross rent of $210/week (~$10,920/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 28% of dwellings are separate houses (vs 73% SA 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 Middle River property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Capital-growth expectations for Middle River are modest for 2026 — incomes 28% below the SA median of $80,964 and a population of 23 suggest gains will lag headline metro markets. Rents sit around $210/week, setting the baseline gross rental income at roughly $10,920/year — refine this against current listings before running your numbers. The EquitySight investment score of 29/100 places Middle River 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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Middle River scores 29/100 on our EquitySight investment framework — a weak rating. That score is driven by a population of 23, median household income of $58,448/year and median weekly rent of $210. 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 Middle River are a median household income of $58,448/year, a dwelling mix that is 28% 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.
Middle River has a usual resident population of approximately 23, 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.
Middle River sits 162 km straight-line from the Adelaide 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 $210 in Middle River, equating to approximately $10,920/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.
A reliable median mortgage figure was not captured for Middle River. 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 Middle River 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 (23 residents), interest-rate sensitivity, below-median household incomes ($58,448 vs $80,964 state median), a unit-heavy dwelling mix (28% houses) where body-corporate costs and apartment supply affect resale, 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.