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ABS 2021 Census · Updated 21 May 2026
Tennyson is a well-established middle-ring suburb of Adelaide, Australia, with a population of approximately 1,137, making it a boutique locality. Located approximately 12 km from the Adelaide CBD, Tennyson is a middle ring area in South Australia. The median household income is $107,172 per year.
Above-average earnings in Tennyson support sustained property values. The short commute to the city centre is a key demand driver.
Official Australia Post postcode for Tennyson. 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 Tennyson 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.
Tennyson is a smaller community of 1,137 — about 31% of the South Australia suburb median (3,699) — so investors should factor in the narrower buyer pool and longer average time-on-market. Median household income of $107,172/year runs 32% 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 $340/week (~$1,473/month) covers only 68% of the median mortgage of $2,167/month — the remaining $694/month must be funded from other income, so this suburb tilts toward capital growth rather than yield. 12 km from Adelaide places Tennyson 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 53% 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 Tennyson stacks up against the median of all South Australia suburbs in our dataset. Positive values mean Tennyson sits above the state median; negative means below.
| Metric | Tennyson | SA median | Δ vs state |
|---|---|---|---|
| Population | 1,137 | 3,699 | -69% |
| Median household income | $107,172/yr | $80,964/yr | +32% |
| Median rent (weekly) | $340 | $320 | +6% |
| Median mortgage (monthly) | $2,167 | $1,616 | +34% |
| Distance to CBD | 12 km | 13 km | -8% |
| Separate houses | 53% | 73% | -20pp |
Pre-inspection briefing for Tennyson — every item is derived from public datasets, with full citations in our data sources page.
Strong buy-and-hold fundamentals: household incomes run 32% above the South Australia suburb median ($107,172 vs $80,964), and the 12 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.
Moderate rental coverage: rent of $340/week covers 68% of a $2,167/month mortgage, leaving a $694/month gap that an investor bridges with equity, depreciation and tax benefits.
Only 53% 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 Tennyson property
Scenario comparison, cash flow analysis, tax modelling, and PDF export — all in one place.
Create free account →Tennyson enters 2026 with a demographic tailwind — household incomes 32% above the South Australia suburb median of $80,964 and a population of 1,137 give it the depth and purchasing power to outperform the wider SA market over the next 12–18 months. Rental coverage runs at ~68% of the typical mortgage ($1,473/month rent vs $2,167/month repayment), leaving a manageable top-up for most investors. The EquitySight investment score of 65/100 places Tennyson in the upper-middle tier of Australian suburbs we profile, and overall investor sentiment is balanced heading into the second half of 2026.
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Tennyson scores 65/100 on our EquitySight investment framework — a good rating. That score is driven by a population of 1,137, median household income of $107,172/year and median weekly rent of $340. 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 Tennyson are proximity to Adelaide (12 km), an above-state-median household income of $107,172/year, a dwelling mix that is 53% 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.
Tennyson has a usual resident population of approximately 1,137, 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.
Tennyson sits 12 km straight-line from the Adelaide CBD. This is comfortable commuter territory, with reasonable rail and road access to the city.
The most recent census recorded a median weekly rent of $340 in Tennyson, equating to approximately $17,680/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 Tennyson is $2,167, or approximately $26,004/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 $340 works out to $1,473/month, covering 68% of the median mortgage repayment of $2,167/month. That leaves a $694/month shortfall (around $8,328/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 (1,137 residents), interest-rate sensitivity on the $2,167 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.