Rockingham sits roughly 46 km south of Perth's CBD on the Cockburn Sound coast, in postcode 6168. The reading is SEIFA decile 2 at IRSAD 902, in the 10th state percentile within Western Australia.
ABS 2021 IRSAD release. Score 902 (national mean = 1000).
Decile 2 is a clearly below-average reading, and the 10th state percentile is a strong signal. Rockingham's postcode includes a coastal frontage, an older town-centre area, and a mix of residential pockets that have not yet caught the demographic lift seen in some of the surrounding suburbs. PropertyRanker uses SEIFA as a primary signal for economic_strength, hazard_risk, and entry_point_risk. A decile 2 reading drags the score on those three criteria. What partially balances it for Rockingham is rental_market_depth, where the suburb's combination of coastal access, train-line connectivity, and affordability has historically supported solid rental absorption. The strategy mix in 6168 leans Yield or Balanced. The Yield strategy's 6% gross-yield anchor is reachable on some detached stock in Rockingham, particularly closer to the town centre and the older residential pockets. The Balanced strategy fits the coastal-fronting properties where price growth, rather than yield, is the better signal. The interesting question for any 6168 listing is whether the coastal proximity is priced in already or whether the wider postcode SEIFA reading is suppressing it.
Rockingham WA 6168 is recording strong price growth, with REIWA reporting a median house sale price of $855,000 as at July 2026, representing 17.1% annual growth, while openagent.com.au (September 2026) puts the figure at $873,750 with 20.3% annual growth. yourinvestmentpropertymag.com.au recorded 328 house sales and 213 unit sales in the 12 months to May 2026, with houses averaging just 14 days on market, pointing to a highly competitive, seller-favoured market. Vacancy at the suburb level sits at approximately 0.81% (realestateinvestar.com.au) and days on market have remained very short, consistent with tightening conditions across all three directional signals.
Anchor points pulled per refresh from publicly available suburb profiles. Approximate; not a moving average.
Suburb vacancy sits at approximately 0.81% (well below equilibrium), median days on market is 14-16 days (extremely short), and constrained for-sale stock with 17-20% annual price growth all point to vendors holding firm, compositing to a 'hot' band.
Sources: Rockingham Suburb Profile - REIWA (2026-08-24); Rockingham Property Market and Trends - OpenAgent (2026-09-01); Rockingham, WA 6168: Suburb Profile - Your Investment Property Mag (2026-05-31); ROCKINGHAM WA 6168 - Turner Estate Agents (2026-06-01); Investment Property Rockingham WA 6168 - Real Estate Investar (2026-06-01) · Refreshed 6 Oct 2026
PropertyRanker scores any Australian property against 12 criteria across three pillars: Growth, Cashflow, and Risk. SEIFA is a primary signal for economic strength and a supporting one for entry-price risk. It also informs the crime side of hazard risk, though physical overlays like flood, bushfire and coastal exposure, and recorded crime data where available, take priority there. The decile of 2 shown above gives a listing in Rockingham a softer starting line on economic strength, though often a firmer one on entry-price risk, since less advantaged postcodes usually carry lower entry prices.
On top of that, PropertyRanker chooses one of four strategies (Balanced, Growth, Yield, Regional) and applies a per-strategy yield anchor. The anchors are 3.5% for Growth, 5% for Balanced, 6% for Yield, and 7% for Regional. A postcode at this level tends to make the Yield (6% anchor) and Regional (7% anchor) strategies more reachable, because a lower entry price lifts the gross yield a listing can achieve, while a Growth result usually depends on a specific catalyst such as an infrastructure or renewal pipeline.
Read the scoring guide for the full criteria list and how the verdict thresholds work.
SEIFA is a postcode-level read. The fastest sanity check on any single decile reading is to compare it against the suburbs that surround it.
Rockingham's coastal exposure varies sharply within the postcode. SEIFA cannot tell you about storm surge or coastal erosion overlay for foreshore listings, and the body corporate health on the older apartment stock along the bay varies. The Mandurah rail line provides genuine commuter connectivity, but the walking distance from listing to station can swing the rental_market_depth criterion materially. Score the listing in PropertyRanker for a verdict that accounts for these.
A decile 2 SEIFA reading at IRSAD 902 (well below the national mean of 1000) is a real constraint and PropertyRanker reflects it by dragging the scores on economic_strength, hazard_risk, and entry_point_risk. That said, a low SEIFA score does not make a suburb uninvestable; it shifts the data toward a yield-focused thesis rather than a capital-growth one. The more useful question for any specific listing in 6168 is whether the coastal proximity or train-line access is already priced into that property, or whether the wide-postcode SEIFA reading is still suppressing it.
The data in 6168 points toward the High Yield strategy (anchored around a 6 percent gross yield) for detached stock closer to the older town-centre and inland residential pockets, where affordability and rental demand historically support stronger yield signals. Coastal-fronting properties are a different sub-case; there the Balanced strategy (anchored around 5 percent gross yield) is more appropriate because price appreciation, rather than immediate yield, is the more credible signal. Score the individual listing on PropertyRanker to see which strategy it clears, because the postcode is internally mixed.
The primary data risk is the SEIFA reading itself: at decile 2 and the 10th state percentile within WA, the suburb has not yet seen the demographic lift evident in surrounding areas, and that suppresses the economic_strength and entry_point_risk scores. The coastal frontage adds a second layer to check: the City of Rockingham has a published Coastal Hazard Risk Management and Adaptation Plan that identifies parts of the foreshore as already subject to erosion and inundation risk, so any property close to the Cockburn Sound coast warrants a title and planning-condition check for coastal hazard overlays. A third factor is the gap between the train station and the town centre; Rockingham station sits on the eastern edge of the suburb rather than within the CBD, which is a walkability and liveability variable that affects tenant demand by property location within the postcode.
PropertyRanker runs twelve scoring criteria across the listing; SEIFA IRSAD feeds directly into three of them: economic_strength, hazard_risk, and entry_point_risk. For Rockingham, the SEIFA score of 902 at decile 2 produces below-average outputs on all three of those criteria. The tool also scores rental_market_depth separately, and for 6168 that criterion benefits from confirmed infrastructure factors including the Mandurah Line Transperth service at Rockingham station (roughly 34 minutes to Perth), the bus interchange connecting to the foreshore, and the affordability of the surrounding housing stock. Score the specific listing address to get live figures; the postcode is mixed and the per-listing result will differ from the postcode average.
It is a partial offset rather than a full one. Rockingham station on the Transperth Mandurah Line runs services every 10 minutes in peak and connects to Perth in around 34 minutes, which is a genuine tenant amenity that supports rental demand and feeds into PropertyRanker's rental_market_depth criterion. However, the station sits roughly two kilometres east of the Rockingham town centre and foreshore rather than within it, so the benefit is not uniform across the postcode; properties well away from the bus interchange or without walkable access to the station capture less of that connectivity premium. The SEIFA decile 2 reading remains the dominant scoring signal and the train access does not override it on the criteria where SEIFA is the primary input.
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