Diddillibah - Rosemount

Population growth drivers in Diddillibah - Rosemount are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

Diddillibah - Rosemount's population is approximately 4,685 as of November 2025. This figure represents an increase of 282 people, a 6.4% rise since the 2021 Census which reported 4,403 inhabitants. The growth is inferred from ABS' estimated resident population of 4,690 in June 2024 and 20 validated new addresses post-Census. This results in a population density of 149 persons per square kilometer. Over the past decade, Diddillibah - Rosemount has shown resilience with a 2.3% compound annual growth rate, exceeding non-metro areas. Interstate migration contributed about 49.7% to recent population gains, although all factors including overseas migration and natural growth were positive.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For unsupported areas post-2032, Queensland State Government's SA2 area projections from 2023 (based on 2021 data) are adopted, with proportional growth weightings applied for age cohorts. Future trends suggest a population increase just below the median of Australia's non-metropolitan areas by 2041, with an expected rise of 550 persons and an overall increase of 11.8%.

Residential development activity is slightly higher than average within Diddillibah - Rosemount when compared nationally

Rosemount-Diddillibah has received approximately 24 dwelling approvals per year over the past five financial years, totalling 121 homes. As of FY-26, 8 approvals have been recorded. The average population increase per dwelling built in the area between FY-21 and FY-25 is 3.9 people annually. This indicates substantial supply lagging behind demand, leading to heightened buyer competition and pricing pressures.

The average construction cost for new homes is $387,000. In FY-26, there have been $3.3 million in commercial approvals, suggesting limited focus on commercial development. Compared to the rest of Queensland, Rosemount-Diddillibah has about three-quarters the building activity per person and ranks at the 47th percentile nationally, resulting in relatively constrained buyer choice and interest in existing homes.

All new construction consists of standalone homes, preserving the area's low-density nature and attracting space-seeking buyers. The population estimate per dwelling approval is 370 people. By 2041, Rosemount-Diddillibah is projected to gain an additional 555 residents. With current construction levels, housing supply should meet demand adequately, creating favourable conditions for buyers while potentially enabling growth that exceeds current forecasts.

Diddillibah - Rosemount has very high levels of nearby infrastructure activity, ranking in the top 10% nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 19 projects that could affect this area. Notable ones are Summer Breeze Estate, Good Samaritan Catholic College Expansion, Parklakes Central (Bli Bli Northern Village), and Bruce Highway Upgrade - Maroochydore Road to Mons Road. The following list details those most relevant.

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

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

Employment performance in Diddillibah - Rosemount exceeds national averages across key labour market indicators

Rosemount, Diddillibah has a skilled workforce with notable representation in the construction sector. As of September 2025, its unemployment rate is 2.7%.

In comparison to Rest of Qld's unemployment rate of 4.1%, Rosemount has a lower rate of 1.4%. Workforce participation is similar to Rest of Qld at 59.1%. Leading employment industries are construction, health care & social assistance, and retail trade. Construction shows particularly strong specialization with an employment share 1.6 times the regional level.

Conversely, agriculture, forestry & fishing has lower representation at 2.1% compared to the regional average of 4.5%. Labour force data from a 12-month period ending in September 2025 shows a decrease of 2.5%, alongside a 1.8% employment decline, resulting in a 0.7 percentage point fall in unemployment rate. State-level data as of 25-Nov-25 shows QLD employment contracted by 0.01%. National employment forecasts from May-25 suggest national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Rosemount's employment mix suggests local employment should increase by 6.7% over five years and 13.7% over ten years.

Income levels sit below national averages according to AreaSearch assessment

According to AreaSearch's aggregation of the latest postcode level ATO data released for financial year 2022, Diddillibah - Rosemount SA2 had a median income among taxpayers of $48,597. The average income stood at $60,976. This was below the national average and compared to levels of $50,780 and $64,844 across Rest of Qld respectively. Based on Wage Price Index growth of 13.99% since financial year 2022, current estimates would be approximately $55,396 (median) and $69,507 (average) as of September 2025. According to 2021 Census figures, household income in Diddillibah - Rosemount ranked modestly at the 34th percentile. Family income was at the 33rd percentile, while personal income was at the 29th percentile. Income analysis revealed that the largest segment comprised 26.6% of residents earning between $1,500 and $2,999 weekly, reflecting patterns seen in the broader area where 31.7% similarly occupied this range. Housing affordability pressures were severe, with only 83.5% of income remaining after housing costs, ranking at the 41st percentile. The area's SEIFA income ranking placed it in the 6th decile.

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

Dwelling structure in Diddillibah - Rosemount, as per the latest Census, consisted of 87.8% houses and 12.1% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Non-Metro Qld had 82.9% houses and 17.0% other dwellings. Home ownership in Diddillibah - Rosemount was 45.2%, with the remaining dwellings either mortgaged (43.3%) or rented (11.5%). The median monthly mortgage repayment in the area was $2,167, higher than Non-Metro Qld's average of $1,777. The median weekly rent figure was recorded at $400, compared to Non-Metro Qld's $385. Nationally, Diddillibah - Rosemount's mortgage repayments were significantly higher than the Australian average of $1,863, while rents exceeded the national figure of $375.

Diddillibah - Rosemount has a typical household mix, with a higher-than-average median household size

Family households account for 74.4% of all households, including 35.1% couples with children, 31.0% couples without children, and 7.9% single parent families. Non-family households make up the remaining 25.6%, with lone person households at 23.5% and group households comprising 2.1%. The median household size is 2.7 people, which is larger than the Rest of Qld average of 2.6.

Diddillibah - Rosemount shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

Educational qualifications in Diddillibah-Rosemount trail regional benchmarks with 23.0% of residents aged 15+ holding university degrees compared to Australia's 30.4%. This gap indicates potential for educational development and skills enhancement. Bachelor degrees are most common at 15.9%, followed by postgraduate qualifications (4.2%) and graduate diplomas (2.9%). Trade and technical skills are prominent, with 41.0% of residents aged 15+ holding vocational credentials – advanced diplomas (12.5%) and certificates (28.5%).

Educational participation is high, with 27.5% of residents currently enrolled in formal education. This includes primary education (9.8%), secondary education (9.3%), and tertiary education (3.8%).

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

The analysis of public transport in the Diddillibah - Rosemount area shows seven active transport stops currently operating. These stops serve a mix of bus routes, with two individual routes providing a total of 331 weekly passenger trips. The accessibility to these transport services is rated as limited, with residents typically located 1864 meters away from the nearest stop.

On average, there are 47 trips per day across all routes, which equates to approximately 47 weekly trips per individual stop.

Health performance in Diddillibah - Rosemount is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts

Rosemount faces significant health challenges with common health conditions prevalent across both younger and older age cohorts. The rate of private health cover is relatively low at approximately 50% of the total population (~2342 people), compared to the national average of 55.3%.

The most common medical conditions are arthritis (10.0%) and asthma (7.9%), while 66.6% of residents declare themselves completely clear of medical ailments, slightly higher than the Rest of Qld's 66.0%. The area has a higher proportion of seniors aged 65 and over at 23.0% (1075 people), compared to Rest of Qld's 18.7%. Health outcomes among seniors in Rosemount are above average, performing better than the general population in health metrics.

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

Diddilbah-Rosemount had a cultural diversity score below average, with 80.9% of its population born in Australia, 90.3% being citizens, and 95.0% speaking English only at home. Christianity was the predominant religion, comprising 49.4% of the population. The most significant overrepresentation was seen in the 'Other' category, which constituted 1.1% of the population compared to 0.5% across the rest of Queensland.

In terms of ancestry, the top three groups were English (33.8%), Australian (26.8%), and Scottish (9.1%). Notably, German (5.1%) was overrepresented in Diddilbah-Rosemount compared to regional levels, as were New Zealanders (1.0%) and South Africans (0.6%).

Diddillibah - Rosemount hosts an older demographic, ranking in the top quartile nationwide

Diddillibah - Rosemount has a median age of 45, which is higher than the Rest of Qld figure of 41 and also above the national average of 38. The age profile shows that those aged 75-84 are particularly prominent, making up 8.2% of the population, while the 25-34 group is smaller at 8.0%. Between the 2021 Census and now, the 15 to 24 age group has grown from 10.4% to 12.4%, while the 45 to 54 cohort has declined from 14.8% to 13.0% and the 65 to 74 group has dropped from 13.6% to 12.2%. By 2041, demographic projections show significant shifts in Diddillibah - Rosemount's age structure. The 25 to 34 group is projected to grow by 49%, reaching 557 people from 374. Conversely, population declines are projected for the 55 to 64 and 15 to 24 cohorts.