Dianella (WA)

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Based on evaluation of ABS updates for the region and new locations confirmed by Districts post-Census, Dianella's population is estimated at around 26,735 as of May 2026. This represents an increase of 2,566 people (10.6%) compared to the 2021 Census, which counted 24,169 people. The adjustment is derived from the resident population of 26,719, estimated by Districts after reviewing the latest ERP data release from the ABS (June 2025) and an additional 220 validated new addresses since the Census date. This population level translates to a density ratio of 2,489 persons per square kilometer, placing the area in the upper quartile of national locations assessed by Districts. Dianella's 10.6% growth rate since the 2021 census outperformed the national average (9.3%), establishing it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration, which accounted for approximately 87.0% of overall population gains during recent periods.

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Dianella has a well-educated workforce, with essential services sectors well represented, an unemployment rate of only 3.1%, and 3.4% in estimated employment growth over the past year, based on Districts aggregation of statistical area data. As of March 2026, 14,817 residents are in work while the unemployment rate is 1.1% below Greater Perth's rate of 4.2%, and workforce participation is somewhat below standard (66.8% compared to Greater Perth's 70.2%). Based on Census responses, a low 8.9% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

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As per Districts' latest postcode level ATO data released for financial year 2023, the suburb of Dianella's median income among taxpayers is $55,931, with an average of $74,469. This is very high nationally, and compares to Greater Perth's median of $60,748 and average of $80,248. Based on Wage Price Index growth of 10.93% since financial year 2023, current estimates would be approximately $62,044 (median) and $82,608 (average) as of March 2026. Census data reveals household, family and personal incomes all rank modestly in Dianella, between the 46th and 47th percentiles. Distribution data shows the $1,500 - 2,999 earnings band captures 28.7% of the community (7,672 individuals), mirroring regional levels where 32.0% occupy this bracket. After housing, of income remains for other expenses and the area's SEIFA income ranking places it in the th decile.

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Dwelling structure within Dianella, as evaluated at the latest Census, comprised 71.6% houses and 28.5% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Perth metro's 77.8% houses and 22.1% other dwellings. Meanwhile, the level of home ownership within Dianella was well beyond that of Perth metro, at 40.2%, with the remainder of dwellings either mortgaged (34.9%) or rented (24.9%). The median monthly mortgage repayment in the area was above the Perth metro average at $2,000, while the median weekly rent figure was recorded at $340, compared to Perth metro's $1,907 and $350. Nationally, Dianella's mortgage repayments are higher than the Australian average of $1,863, while rents are less than the national figure of $375.

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Family households dominate at 67.2% of all households, comprising 30.8% couples with children, 25.4% couples without children, and 9.7% single parent families. Non-family households make up the remaining 32.8%, with lone person households at 29.4% and group households comprising 3.4% of the total. The median household size of 2.4 people is smaller than the Greater Perth average of 2.6.

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University qualifications in Dianella (32.8% of residents aged 15+) edge above the WA average (27.9%), suggesting competitive educational foundations within the broader context. Bachelor degrees lead at 23.2%, followed by postgraduate qualifications (6.6%) and graduate diplomas (3.0%). Trade and technical skills feature prominently, with 29.4% of residents aged 15+ holding vocational credentials – advanced diplomas (11.4%) and certificates (18.0%).

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Public transport analysis reveals 109 active transport stops operating within Dianella comprising a mix of buses. These stops are serviced by 23 individual routes, collectively providing 4,611 weekly passenger trips. Transport accessibility is rated as good, with residents typically located 207 meters from the nearest transport stop. As a primarily residential area, most residents commute outward - car remains the dominant mode at 85%, with 9% by bus. Vehicle ownership averages 1.4 per dwelling. A relatively low 8.9% of residents work from home (2021 Census; may reflect COVID-19 conditions).

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Dianella demonstrates above-average health outcomes, based on Districts' assessment of mortality rates and chronic condition prevalence with both young and old age cohorts seeing low prevalence of common health conditions , and the rate of private health cover found to be very high at approximately 57% of the total population (~15,174 people). This compares to 59.0% across Greater Perth.

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Dianella scores quite highly on cultural diversity, with 33.6% of its population speaking a language other than English at home and 41.0% born overseas. The main religion in Dianella was found to be Christianity, which makes up 50.7% of people in Dianella. However, the most apparent overrepresentation was in Judaism, which comprises 5.7% of the population, substantially higher than the Greater Perth average of 0.3%.

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The 43-year median age in Dianella is considerably higher than Greater Perth's average of 37 as well as substantially exceeding the 38-year national average. The age profile shows 65 - 74 year-olds are particularly prominent (11.1%), while the 5 - 14 group is comparatively smaller (10.1%) than in Greater Perth. In the period since 2021, the 25 to 34 age group has grown from 12.3% to 13.7% of the population. Conversely, the 45 to 54 cohort has declined from 13.8% to 12.0%. Looking ahead to 2041, demographic projections reveal significant shifts in Dianella's age structure. The 75 to 84 age cohort is projected to rise substantially, expanding by people () from to . Notably, the combined + age groups will account for of total population growth, reflecting the area's aging demographic profile. On the other hand, the to and to cohorts are expected to experience population declines.

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Dianella currently has an estimated 1,229 children under 5 years old, comprising approximately 716 children aged 0-2 and 478 children aged 3-4. This cohort grew by an estimated 2% since the previous census. though population forecasts indicate future decline, with an anticipated decrease of 7% by 2041 (to approximately 1,142 children). Meanwhile the 5-12 cohort currently amounts to 2,144. While growth has been positive birth rates observed in the area have been moderate, with approximately 9.3 births per 1,000 residents recorded over the latest two-year period analysed which ranks the area within the middle tier nationally.