Diamond Creek

Population growth drivers in Diamond Creek are slightly above average based on AreaSearch's ranking of recent, and medium term trends

As of Feb 2026, the estimated population of Diamond Creek is around 13,024. This reflects a growth of 521 people since the 2021 Census, which reported a population of 12,503. The increase was inferred from AreaSearch's resident population estimate of 12,801 in June 2024 and an additional 119 validated new addresses since the Census date. This results in a population density ratio of 746 persons per square kilometer, roughly inline with averages seen across other locations assessed by AreaSearch. Diamond Creek's growth rate of 4.2% since the 2021 census exceeded the SA3 area's rate of 2.8%. Natural growth contributed approximately 62.0% of overall population gains during recent periods.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data, it utilises VIC State Government's Regional/LGA projections from 2023, adjusted employing weighted aggregation methods to SA2 levels. Growth rates by age group are applied across all areas for years 2032 to 2041. By 2041, the suburb of Diamond Creek is forecasted to grow by 2,525 persons based on aggregated SA2-level projections, reflecting a total increase of 17.6% over the 17-year period.

AreaSearch analysis of residential development drivers sees Diamond Creek recording a relatively average level of approval activity when compared to local markets analysed countrywide

AreaSearch analysis of ABS building approval numbers in Diamond Creek shows around 60 residential properties granted approval per year. Over the past five financial years, from FY-21 to FY-25, approximately 301 homes were approved, with a further 15 approved so far in FY-26. This results in an average of 0.8 new residents per year per dwelling constructed over these five years.

The average construction cost value for new properties is $714,000, indicating a focus on the premium market. In FY-26, $11.5 million in commercial approvals have been registered, reflecting steady commercial investment activity. Compared to Greater Melbourne, Diamond Creek has 98.0% more development activity per person. The area's building activity is composed of 81.0% detached dwellings and 19.0% townhouses or apartments, maintaining its low density nature with approximately 329 people per dwelling approval.

Future projections estimate Diamond Creek to add 2,286 residents by 2041, with current construction levels expected to meet housing demand adequately, creating favourable conditions for buyers and potentially enabling growth that exceeds current forecasts.

Diamond Creek has very high levels of nearby infrastructure activity, ranking in the top 20% nationally

Eleven projects identified by AreaSearch are expected to impact the local area, significantly influencing its performance. Key projects include the Diamond Creek Community Infrastructure Master Plan, Eltham Major Activity Centre, Nillumbik Waste Management Facility Upgrade, and Diamond Creek Outdoor Pool Upgrade. The following list details those likely to be most relevant.

Professional plan users can use the search below to filter and access additional projects.

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AreaSearch analysis of employment trends sees Diamond Creek performing better than 90% of local markets assessed across Australia

Diamond Creek has a well-educated workforce as of September 2025. The unemployment rate is 1.7%. Employment stability was maintained over the past year.

There are 7,811 residents in work, with an unemployment rate of 2.9% below Greater Melbourne's rate of 4.7%. Workforce participation is high at 76.4%, compared to Greater Melbourne's 71.0%. A significant portion, 31.6%, of residents work from home, potentially influenced by Covid-19 lockdowns. Key industries for employment include construction, health care & social assistance, and education & training.

Construction stands out with employment levels at 1.6 times the regional average. Conversely, professional & technical services show lower representation at 7.4% compared to the regional average of 10.1%. The area appears to offer limited local employment opportunities. Over a 12-month period ending in September 2025, labour force increased by 0.2%, while employment declined by 0.1%, causing unemployment to rise by 0.3 percentage points. In comparison, Greater Melbourne saw employment grow by 3.0% and labour force expand by 3.3%. National employment forecasts from Jobs and Skills Australia, released in May-25, project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Diamond Creek's employment mix suggests local employment should increase by 6.7% over five years and 13.7% over ten years.

Income metrics indicate excellent economic conditions, with the area achieving higher performance than 75% of national locations assessed by AreaSearch

According to AreaSearch's aggregation of ATO data released on 1 July 2023 for financial year 2023, Diamond Creek had a median income among taxpayers of $60,624 and an average level of $76,409. Nationally, these figures are high compared to the national median of $57,688 and average of $75,164 in Greater Melbourne. By September 2025, adjusted for Wage Price Index growth of 8.25%, estimated incomes would be approximately $65,625 (median) and $82,713 (average). The 2021 Census ranked Diamond Creek's household, family, and personal incomes highly, between the 77th and 90th percentiles nationally. Income analysis showed that 33.2% of residents (4,323 people) fell within the $1,500 - 2,999 weekly income bracket, similar to regional levels at 32.8%. Notably, 39.2% of residents earned more than $3,000 weekly. After housing costs, residents retained 87.5% of their income, reflecting strong purchasing power, and the area's SEIFA income ranking placed it in the 8th decile.

Diamond Creek is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

Diamond Creek's dwelling structure, as per the latest Census, consisted of 94.4% houses and 5.6% other dwellings. Compared to Melbourne metro's 67.9% houses and 32.1% other dwellings, Diamond Creek had a higher proportion of houses. Home ownership in Diamond Creek was at 36.0%, with mortgaged dwellings at 53.9% and rented ones at 10.1%. The median monthly mortgage repayment in the area was $2,167, higher than Melbourne metro's average of $2,000. The median weekly rent figure was $430, compared to Melbourne metro's $390. Nationally, Diamond Creek's mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Diamond Creek features high concentrations of family households, with a higher-than-average median household size

Family households constitute 84.4% of all households, including 47.3% couples with children, 25.7% couples without children, and 10.8% single parent families. Non-family households account for 15.6%, with lone person households at 14.6% and group households comprising 0.9%. The median household size is 2.9 people, larger than the Greater Melbourne average of 2.6.

Diamond Creek shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

Diamond Creek trail residents aged 15+ with university degrees comprise 29.3%, compared to Greater Melbourne's 37.0%. Bachelor degrees are most common at 19.6%, followed by postgraduate qualifications (5.7%) and graduate diplomas (4.0%). Vocational credentials, notably advanced diplomas (12.5%) and certificates (24.1%), are held by 36.6% of residents aged 15+. Educational participation is high, with 30.0% currently enrolled in formal education: primary (9.7%), secondary (9.0%), and tertiary (5.2%).

Educational participation is notably high, with 30.0% of residents currently enrolled in formal education. This includes 9.7% in primary education, 9.0% in secondary education, and 5.2% pursuing tertiary education.

Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility

Diamond Creek has 45 active public transport stops, all bus services. These stops are served by 10 different routes, together providing 5,034 weekly passenger trips. The area's transport accessibility is rated good, with residents typically located 266 meters from the nearest stop. Most residents commute outward due to Diamond Creek being primarily residential. Cars remain the dominant mode of transport at 92%, while trains account for 5%. Vehicle ownership averages 2.0 per dwelling, higher than the regional average.

According to the 2021 Census, 31.6% of residents work from home, which may reflect COVID-19 conditions. On average, there are 719 trips daily across all routes, equating to approximately 111 weekly trips per individual stop.

Diamond Creek's residents are extremely healthy with both young and old age cohorts seeing low prevalence of common health conditions

Analysis of health metrics indicates strong performance across Diamond Creek, as per AreaSearch's assessment.

Mortality rates and chronic condition prevalence were low for both young and old age cohorts. Private health cover was found to be high at approximately 57% of the total population, which is around 7,422 people. The most prevalent medical conditions in the area were asthma and mental health issues, affecting 7.8% and 7.7% of residents respectively. About 71.8% of residents declared themselves completely clear of medical ailments, compared to 72.6% across Greater Melbourne. Health outcomes for the under-65 population were better than average. The area has 16.2% of residents aged 65 and over, totaling 2,109 people, which is higher than the 15.1% in Greater Melbourne. Health outcomes among seniors are particularly strong, with national rankings broadly in line with the general population.

Diamond Creek ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Diamond Creek had a lower level of cultural diversity, with 85.0% of its population born in Australia, 94.0% being citizens, and 91.1% speaking English only at home. Christianity was the predominant religion, comprising 46.8% of Diamond Creek's population. Judaism, however, was overrepresented, making up 0.1% compared to Greater Melbourne's 1.0%.

In terms of ancestry, the top three groups were English (28.4%), Australian (26.5%), and Irish (9.4%). Notably, Macedonian (1.0%) and Italian (6.8%) were overrepresented, while Maltese (1.2%) was slightly higher than the regional average.

Diamond Creek's population aligns closely with national norms in age terms

The median age in Diamond Creek is 39 years, which is higher than Greater Melbourne's average of 37 and close to the national average of 38. Compared to Greater Melbourne, the 55-64 age cohort is over-represented in Diamond Creek at 13.7%, while the 25-34 age group is under-represented at 9.4%. According to data from the 2021 Census, the 75-84 age group has increased from 3.6% to 5.4% of the population, while the 25-34 cohort has decreased from 11.2% to 9.4%. Population forecasts for the year 2041 suggest significant demographic changes in Diamond Creek. Notably, the 75-84 age group is projected to grow by 67%, adding 471 people and reaching a total of 1,175 from the current 703. Conversely, the 0-4 age group is forecasted to decrease by 16 residents.