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 was around 4,733 as of May 2026. This reflected an increase of 330 people since the 2021 Census, which reported a population of 4,403. The change was inferred from ABS estimated resident population data of 4,731 in June 2025 and additional validated addresses since the Census date. The population density was approximately 151 persons per square kilometer. Over the past decade, Diddillibah - Rosemount's growth rate was 2.2% compound annually, outpacing the Rest of Qld. Overseas migration contributed around 50.7% to overall population gains recently.

AreaSearch adopted ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022. For areas not covered by this data and years post-2032, Queensland State Government's SA2 area projections released in 2023 based on 2021 data were adopted. By 2041, the population was expected to increase by 484 persons to a total of 5,217, reflecting an increase of 10.2% over the 16 years.

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

Rosemount, Diddillibah has received approximately 24 residential property approvals annually over the past five financial years, totalling 121 homes. As of FY-26, 15 approvals have been recorded. On average, 3.9 people moved to the area each year for every dwelling constructed between FY-21 and FY-25. This high demand has led to increased competition among buyers and price growth, with new properties being constructed at an average cost of $387,000.

In terms of commercial development, $3.3 million in approvals have been registered this financial year. Compared to the rest of Queensland, Rosemount, Diddillibah has about three-quarters the building activity per person and ranks among the 47th percentile nationally, resulting in relatively constrained buyer choice and interest in existing dwellings. Recent building activity has consisted solely of standalone homes, preserving the area's low-density nature and attracting space-seeking buyers.

The estimated population per dwelling approval is 370 people. According to AreaSearch's latest quarterly estimate, Rosemount, Diddillibah is projected to add 482 residents by 2041. With current construction levels, housing supply should meet demand adequately, creating favourable conditions for buyers and potentially enabling growth that exceeds current forecasts.

Diddillibah - Rosemount has strong levels of nearby infrastructure activity, ranking in the top 30% nationally

AreaSearch has identified 19 infrastructure projects that could impact a certain area. Notable ones include 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 likely to be 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

Diddilbah - Rosemount has a skilled workforce with 2.9% unemployment as of December 2025. It has 2,284 residents in work and an unemployment rate of 1.1% below Regional Qld's rate of 4.0%. Workforce participation is lower at 60.2%, compared to Regional Qld's 64.5%.

According to Census responses, 18.1% of residents work from home. Leading employment industries are construction, health care & social assistance, and retail trade. Construction shows strong specialization with an employment share 1.6 times the regional level. Conversely, agriculture, forestry & fishing has lower representation at 2.1%.

The area offers limited local employment opportunities. Over a 12-month period ending December 2025, labour force decreased by 3.2% and employment declined by 3.1%, with unemployment remaining essentially unchanged. In contrast, Regional Qld saw employment rise by 0.7%, labour force grow by 1.0%, and unemployment rise by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest Diddilbah - Rosemount's employment should increase by 6.7% over five years and 13.7% over ten years, based on industry-specific projections applied to the local employment mix.

Income levels sit below national averages according to AreaSearch assessment

AreaSearch's aggregation of latest postcode level ATO data for financial year 2023 shows Diddillibah - Rosemount SA2 had a median taxpayer income of $50,424 and an average income of $63,449. This is below the national average of $53,146 and regional Queensland's average of $66,593. Based on Wage Price Index growth of 11.36% since financial year 2023, current estimates for March 2026 would be approximately $56,152 (median) and $70,657 (average). According to 2021 Census figures, household, family, and personal incomes in Diddillibah - Rosemount rank modestly, between the 29th and 41st percentiles. Income analysis reveals that 26.6% of residents earn $1,500-$2,999 weekly, with 1,258 people in this income bracket. This pattern is also seen in the broader area where 31.7% occupy this income range. Housing affordability pressures are severe, with only 83.5% of income remaining after expenses, ranking at the 41st percentile. The area's SEIFA income ranking places it in the 6th decile.

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

In Diddillibah - Rosemount, as per the latest Census, 87.8% of dwellings were houses while 12.1% comprised semi-detached homes, apartments and other types. This compares to Regional Qld's 76.4% houses and 23.6% other dwellings. Home ownership in Diddillibah - Rosemount stood at 45.2%, with mortgaged properties at 43.3% and rented ones at 11.5%. The median monthly mortgage repayment was $2,167, above Regional Qld's average of $1,655. Median weekly rent in the area was $400, compared to Regional Qld's $345. Nationally, Diddillibah - Rosemount's mortgage repayments were significantly higher than the Australian average of $1,863, and 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% of the total. The median household size is 2.7 people, which is larger than the Regional Queensland average of 2.5.

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 the most common at 15.9%, followed by postgraduate qualifications at 4.2% and graduate diplomas at 2.9%. Trade and technical skills are prominent, with 41.0% of residents aged 15+ holding vocational credentials – advanced diplomas at 12.5% and certificates at 28.5%.

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

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

Public transport analysis shows seven active stops operating within Diddillibah-Rosemount area. These stops serve a mix of bus routes, with two individual routes providing a total of 299 weekly passenger trips. Transport accessibility is limited, with residents typically located 1864 meters from the nearest stop. The area is primarily residential and most commuters travel outward; car remains the dominant mode at 95%. Vehicle ownership averages 1.8 per dwelling, above the regional average. According to the 2021 Census, 18.1% of residents work from home, which may reflect COVID-19 conditions.

Service frequency averages 42 trips per day across all routes, equating to approximately 42 weekly trips per stop.

The level of general health in Diddillibah - Rosemount is notably higher than the national average with prevalence of common health conditions low among the general population and nearer the nation's average across older, at risk cohorts

Rosemount, located within Diddillibah, shows better-than-average health outcomes based on AreaSearch's evaluation of mortality rates and chronic condition prevalence. The prevalence of common health conditions is low among the general population but closer to national averages for older, at-risk groups.

Approximately 50% (~2,390 people) have private health cover, lower than the national average of 55.7%. Arthritis and asthma are the most prevalent medical conditions, affecting 10.0% and 7.9% of residents respectively. 66.6% report being free from medical ailments, similar to Regional Qld's 67.6%. Health outcomes for working-age individuals are generally typical. The area has a higher proportion of seniors aged 65 and over at 23.6% (1,118 people), compared to Regional Qld's 20.4%. Senior health outcomes are above average but rank lower nationally than those of the broader population.

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 index 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 notable overrepresentation was in the 'Other' category, with 1.1% compared to Regional Qld's 0.8%.

In terms of ancestry, the top three groups were English (33.8%), Australian (26.8%), and Scottish (9.1%). There were also notable divergences in the representation of German (5.1% vs regional 4.7%), New Zealand (1.0% vs 0.9%), and South Australian (0.6% vs 0.5%) groups.

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

Diddillibah - Rosemount has a median age of 45, which is higher than Regional Qld's figure of 41 and also above the national average of 38. The age profile shows that the 75-84 year-olds are particularly prominent, making up 8.6% of the population, while the 25-34 group comprises 8.1%. Between the 2021 Census and now, the 15 to 24 age group has grown from 10.4% to 12.7%, and the 75 to 84 cohort has increased from 7.5% to 8.6%. Conversely, the 45 to 54 cohort has declined from 14.8% to 12.6%, and the 65 to 74 group has dropped from 13.6% to 12.3%. By 2041, demographic projections indicate significant shifts in Diddillibah - Rosemount's age structure. The 25 to 34 group is expected to grow by 40%, reaching 539 people from the current figure of 385. Conversely, population declines are projected for the 55 to 64 and 15 to 24 cohorts.