Suburb overview
Thorneside is an outer-metropolitan suburb of Brisbane, Australia, with a population of approximately 3,877, making it a boutique locality. Located approximately 17 km from the Brisbane CBD, Thorneside is a outer metro area in Queensland. The median household income is $77,376 per year.
Location
Key indicators
Postcode
4158
Postcode for Thorneside, from a community postcode dataset cross-checked against Australia Post. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →
Population
3,877
Usual resident population at the most recent census.
Median weekly rent
$650/wk
Median weekly rent — as at Mar 2026, Residential Tenancies Authority (Qld) (CC BY 4.0).
Distance to CBD
17 km
Straight-line distance from the suburb centroid to the nearest capital city CBD. Actual driving distance will be longer.
Housing
Median monthly mortgage
$1,787/mo
Monthly median mortgage repayment for households currently paying off a mortgage.
Home type
62% houses
Proportion of separate houses versus units, townhouses, and other home types. Useful for investors assessing rental demand mix.
Why people like living in Thorneside
- Well-connected to Brisbane at ~17 km from the CBD.
- Newer estates with modern homes and family-sized blocks.
Who Thorneside suits
Pros and cons
Pros
- Rent sits within an affordable share of local incomes, supporting tenant demand.
- Affordable entry point compared with inner-city suburbs.
- Established infrastructure and existing community base.
Cons
- Traffic can build during peak hours, especially on arterial roads.
- Prices may rise further as demand continues.
Investment insight
Thorneside is a smaller community of 3,877 — about 71% of the Queensland suburb median (5,474) — so investors should factor in the narrower buyer pool and longer average time-on-market. Household income of $77,376/year is 14% below the Queensland median of $90,298, typically translating into lower entry prices and a tenant base more sensitive to rent increases. Median rent of $650/week (as at Mar 2026, Residential Tenancies Authority (Qld)) equates to roughly $2,817/month — about 158% of the $1,787/month median mortgage repayment recorded at the 2021 Census. On those figures rental income covers most or all of the recorded repayment, but repayments on new loans have risen with interest rates since 2021, so re-run the coverage at today's rates before treating this as a cash-flow suburb. 17 km from Brisbane places Thorneside in the middle commuter belt, close enough for daily trips by car or rail but at a materially lower price point than inner suburbs. Only 62% 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.
Investment tip
Outer-metro suburbs reward careful property selection — aim for homes near infrastructure rather than generic house-and-land packages. At the 2021 Census, local rents consumed roughly 25% of household income — a dated but useful sanity check on tenant affordability.
Thorneside vs Queensland median
How Thorneside stacks up against the median of all Queensland suburbs in our dataset. Positive values mean Thorneside sits above the state median; negative means below.
| Metric | Thorneside | QLD median | Δ vs state |
|---|---|---|---|
| Population | 3,877 | 5,474 | -29% |
| Median household income | $77,376/yr | $90,298/yr | -14% |
| Median rent (weekly, 2021 Census) | $370 | $385 | -4% |
| Median mortgage (monthly, 2021 Census) | $1,787 | $1,733 | +3% |
| Distance to CBD | 17 km | 62 km | -73% |
| Separate houses | 62% | 77% | -15pp |
Investor checklist
Pre-inspection briefing for Thorneside — every item is derived from public datasets, with full citations in our data sources page.
- Market depth: 3,877 residents — 71% of the QLD suburb median (5,474).
- Purchasing power: median household income $77,376/year (-14% vs Queensland suburb median of $90,298).
- Cash-flow coverage (2021 Census): $370/week rent (≈ $1,603/month) covered ~90% of the $1,787/month median mortgage at the 2021 Census — verify against current rents and rates.
- CBD access: 17 km straight-line from Brisbane (state suburb median 62 km).
- Dwelling mix: 62% separate houses — mixed market (vs 77% state median).
- Rate stress-test: budget ~$179/month extra for a 1-percentage-point RBA rate rise on top of the $1,787/month median repayment.
- Tenant rent burden: 25% of the median household income is spent on rent — within normal range.
Investment strategy
Moderate buy-and-hold potential: Thorneside's 3,877-person market and $77,376 median household income work for investors who are selective on street location and property quality rather than counting on a suburb-wide rerating.
Strong rental coverage at the 2021 Census: $370/week (~$1,603/month) covered 90% of the $1,787/month median mortgage, a shortfall of just $184/month. Both rents and repayments have moved since 2021 — verify current figures, though this suburb has historically leaned cash-flow-friendly.
Only 62% 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.
Risk factors
- Interest-rate sensitivity: the $1,787/month median mortgage in Thorneside means a 1-percentage-point RBA rate rise could add roughly $179/month to repayments, reducing buyer borrowing capacity and cooling prices.
- Liquidity risk: with 3,877 residents, Thorneside has a thinner pool of buyers and tenants than larger suburbs. Expect longer days-on-market on resale and budget for potential vacancy gaps between tenancies.
- Regulatory risk: changes to Australian tax settings (negative gearing, CGT discount, foreign-buyer surcharges, land-tax thresholds) could reshape after-tax returns in Thorneside regardless of local market conditions.
- Market cycle risk: property markets are cyclical, so stress-test your projections in Thorneside with a 10–15% price pullback scenario before committing capital — returns to date are not a guarantee of future performance.
Run the numbers on a Thorneside property
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Start your journey near Thorneside →2026 outlook
Capital-growth expectations for Thorneside are modest for 2026 — incomes 14% below the QLD median of $90,298 and a population of 3,877 suggest gains will lag headline metro markets. At the 2021 Census, rental coverage ran at ~90% of the typical mortgage ($1,603/month rent vs $1,787/month repayment), keeping cash flow in positive or near-neutral territory. Verify against current rents and rates. Overall investor sentiment for Thorneside is balanced heading into the second half of 2026, based on its income, rent and mortgage profile relative to the Queensland median.
Frequently asked questions
Is Thorneside a good suburb for investment?
Whether Thorneside suits you depends on your strategy, but the fundamentals are concrete: a population of 3,877, a median household income of $77,376/year and median weekly rent of $370. Weigh those against your goal — cash flow, capital growth, or a value-add renovation — each of which we break down with suburb-specific ABS numbers elsewhere on this page.
What drives property demand in Thorneside?
The main demand drivers in Thorneside are proximity to Brisbane (17 km), a median household income of $77,376/year, a dwelling mix that is 62% separate houses. Together these shape both owner-occupier and tenant demand.
What is the population of Thorneside?
Thorneside has a usual resident population of approximately 3,877, 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.
How far is Thorneside from the Brisbane CBD?
Thorneside sits 17 km straight-line from the Brisbane CBD. This is comfortable commuter territory, with reasonable rail and road access to the city.
What is the median rent in Thorneside?
The median weekly rent in Thorneside is $650 (as at Mar 2026, Residential Tenancies Authority (Qld)), equating to approximately $33,800/year in gross rental income. Confirm against current listings on realestate.com.au and Domain before making an offer.
What is the typical mortgage repayment in Thorneside?
The median monthly mortgage repayment in Thorneside is $1,787, or approximately $21,444/year (vs $1,733/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.
Is Thorneside cash-flow positive for investors?
A median weekly rent of $370 works out to $1,603/month, covering 90% of the median mortgage repayment of $1,787/month. That leaves a $184/month shortfall (around $2,208/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.
What are the main risks of investing in Thorneside?
The main risks are a thin buyer pool (3,877 residents), interest-rate sensitivity on the $1,787 median mortgage, the broader Queensland market cycle. Each of these is covered in the Risk Factors section above with suburb-specific numbers rather than generic warnings.
How we built this Thorneside profile
The population figure on this page comes from the ABS 2021 Census. The postcode comes from a community postcode dataset cross-checked against Australia Post. The dwelling mix is from the ABS 2021 Census. The median household income is the ABS 2021 Census median weekly household income, annualised. Distance to the CBD is calculated from the suburb's ABS centroid. The Census median rent and mortgage figures are 2021 figures and are labelled as such wherever they appear — they are five years old and have moved substantially since. The current median weekly rent in Key indicators is a genuine recent figure from Residential Tenancies Authority (Qld) (Mar 2026), published under a Creative Commons licence and dated on the page. We do not publish an investment score or school/park counts for this suburb. See our methodology and data sources for exactly what's measured and what's estimated.