Jilliby

An assessment of population growth drivers in Jilliby reveals an overall ranking slightly below national averages considering recent, and medium term trends

The population of Jilliby is estimated at around 1,749 as of May 2026. This reflects an increase from the previous population count of 1,694 in the 2021 Census, indicating a growth of 55 people (3.2%). AreaSearch validated this estimate by examining the latest ERP data release by the ABS in June 2025 and confirming two new addresses since the Census date. This results in a population density ratio of 20 persons per square kilometer. Jilliby's population growth rate of 3.2% is close to that of its SA4 region, which grew by 3.4%. Overseas migration contributed approximately 47.0% of overall population gains during recent periods.

AreaSearch projects future trends using ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data, NSW State Government's SA2 level projections are used, released in 2022 with a base year of 2021. These projections indicate that the suburb is expected to increase its population by 109 persons to 2041, reflecting an overall increase of 6.2% over the 16-year period.

Residential development activity is lower than average in Jilliby according to AreaSearch's national comparison of local real estate markets

AreaSearch analysis of ABS building approval numbers allocated from statistical area data indicates Jilliby experienced approximately 2 dwellings receiving development approval annually. Over the past five financial years, from FY-21 to FY-25, around 11 homes were approved, with an additional 1 approved so far in FY-26. This results in an average of about 4.3 people moving to the area each year for each dwelling built during these years.

The demand significantly outpaces supply, which typically puts upward pressure on prices and increases competition among buyers. New homes are being built at an average expected construction cost value of $419,000, slightly above the regional average, suggesting a focus on quality developments. This financial year has seen approximately $3.6 million in commercial approvals, indicating the area's residential character. Compared to Greater Sydney, Jilliby records markedly lower building activity, at 70.0% below the regional average per person. This limited new supply generally supports stronger demand and values for established properties, although building activity has accelerated in recent years.

The level is also under the national average, indicating the area's established nature and suggesting potential planning limitations. Recent development has been entirely comprised of detached houses, maintaining the area's traditional low density character with a focus on family homes appealing to those seeking space. The estimated count of 581 people in the area per dwelling approval reflects its quiet, low activity development environment. Population forecasts indicate Jilliby will gain approximately 109 residents through to 2041, according to the latest AreaSearch quarterly estimate. Development is keeping reasonable pace with projected growth, though buyers may face increasing competition as the population expands.

Jilliby has strong levels of nearby infrastructure activity, ranking in the top 40% nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified 17 projects that may impact the region. Key projects include Warnervale Town Centre, Rosella Rise, Warnervale Water and Sewer Infrastructure Program, and Central Coast Airport Upgrade. The following list details those likely 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.

AreaSearch analysis places Jilliby well above average for employment performance across multiple indicators

Jilliby's workforce is skilled with notable representation in the construction sector. The unemployment rate was 3.1% as of December 2025. Employment growth over the past year was estimated at 2.9%.

This figure is based on AreaSearch aggregation of statistical area data. As of December 2025984 residents were in work and the unemployment rate was 1.1% lower than Greater Sydney's rate of 4.2%. Workforce participation was similar to Greater Sydney's 68.8%. According to Census responses, 31.4% of residents worked from home.

Key industries for employment among residents were construction, education & training, and health care & social assistance. Construction employed 1.6 times the regional average. Professional & technical services employed only 5.1% of local workers, lower than Greater Sydney's 11.5%. Employment opportunities locally appeared limited based on Census data. Over the 12 months to December 2025, employment increased by 2.9% while labour force also grew by 2.9%, keeping unemployment relatively stable. By comparison, Greater Sydney recorded employment growth of 2.2% and labour force growth of 2.3%. Jobs and Skills Australia's national employment forecasts from May-25 suggest potential future demand within Jilliby. These projections estimate national employment to expand by 6.6% over five years and 13.7% over ten years. Applying these industry-specific projections to Jilliby's employment mix suggests local employment should increase by 6.1% over five years and 12.8% over ten years, though this is a simple weighting extrapolation for illustrative purposes only.

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

AreaSearch's latest postcode level ATO data for financial year 2023 shows that income in Jilliby is above average nationally. The median income is $61,889 and the average income stands at $75,203. In Greater Sydney, the median income is $60,817 with an average of $83,003. Based on Wage Price Index growth of 10.32% since financial year 2023, current estimates for Jilliby would be approximately $68,276 (median) and $82,964 (average) as of March 2026. According to the 2021 Census, household incomes rank at the 94th percentile ($2,713 weekly), while personal income ranks at the 60th percentile. The predominant income cohort spans 30.0% of locals (524 people) in the $1,500 - 2,999 category, aligning with regional levels where this cohort represents 30.9%. A substantial proportion of high earners, at 42.8%, indicates strong economic capacity throughout Jilliby. After housing costs, residents retain 87.8% of income, reflecting strong purchasing power. The area's SEIFA income ranking places it in the 7th decile.

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

Dwelling structure in Jilliby, as evaluated at the latest Census held on 28 August 2016, comprised 98.0% houses and 2.0% other dwellings such as semi-detached units, apartments, and 'other' dwellings. This is compared to Sydney metropolitan area's dwelling structure of 55.9% houses and 44.1% other dwellings. The level of home ownership in Jilliby was recorded at 41.5%, with mortgaged dwellings at 48.3% and rented dwellings at 10.2%. As of the latest data available, the median monthly mortgage repayment in Jilliby was $2,564, while the median weekly rent figure was recorded at $445. These figures are compared to Sydney metropolitan area's median monthly mortgage repayment of $2,427 and median weekly rent of $470. Nationally, Jilliby's mortgage repayments were significantly higher than the Australian average of $1,863 as of 2016 Census data, while rents were substantially above the national figure of $375.

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

Family households comprise 91.0% of all households, including 49.1% couples with children, 32.1% couples without children, and 9.2% single parent families. Non-family households account for the remaining 9.0%, with lone person households making up 7.2% and group households comprising 2.0%. The median household size is 3.4 people, which is larger than the Greater Sydney average of 2.7.

Jilliby shows below-average educational performance compared to national benchmarks, though pockets of achievement exist

The area's university qualification rate is 21.0%, significantly lower than Greater Sydney's average of 38.0%. Bachelor degrees are the most common, at 14.7%, followed by postgraduate qualifications (4.3%) and graduate diplomas (2.0%). Vocational credentials are prevalent, with 40.8% of residents aged 15+ holding them, including advanced diplomas (11.6%) and certificates (29.2%). Educational participation is high at 30.9%, with 10.1% in primary education, 9.0% in secondary education, and 4.9% pursuing tertiary education.

Educational participation is notably high, with 30.9% of residents currently enrolled in formal education. This includes 10.1% in primary education, 9.0% in secondary education, and 4.9% pursuing tertiary education.

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

Jilliby has 84 active public transport stops, all of which are bus stops. These stops are serviced by 13 different routes that together provide 120 weekly passenger trips. Transport accessibility is rated as good, with residents typically located 305 meters from the nearest stop. Most residents commute outward due to Jilliby's primarily residential nature. The car remains the dominant mode of transport at 96%. Vehicle ownership averages 2.7 per dwelling, which is above the regional average.

According to the 2021 Census, a high 31.4% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 17 trips per day across all routes, equating to approximately 1 weekly trip per individual stop.

The level of general health in Jilliby is notably higher than the national average with both young and old age cohorts seeing low prevalence of common health conditions

Jilliby demonstrates above-average health outcomes based on AreaSearch's assessment of mortality rates and chronic condition prevalence. Both young and old age cohorts show low prevalence of common health conditions.

The rate of private health cover is very high at approximately 57% of the total population, around 990 people, compared to 59.9% across Greater Sydney. The most common medical conditions in the area are mental health issues and arthritis, impacting 8.8 and 8.0% of residents respectively. About 69.2% of residents declare themselves completely clear of medical ailments, compared to 74.6% across Greater Sydney. Health outcomes among the working-age population are broadly typical. The area has 20.3% of residents aged 65 and over, around 355 people, which is higher than the 15.5% in Greater Sydney. Health outcomes among seniors are above average, with national rankings broadly in line with the general population.

Jilliby is considerably less culturally diverse than average when assessed alongside AreaSearch's national rankings for language and cultural background related metrics

Jilliby's cultural diversity was found to be below average with 88.9% of its population born in Australia, 94.0% being citizens, and 97.3% speaking English only at home. The predominant religion in Jilliby was Christianity, accounting for 62.6% of the population, compared to 49.2% across Greater Sydney. In terms of ancestry, the top three represented groups were Australian (34.3%), English (32.1%), and Irish (8.4%).

Notably, French, Maltese, and Dutch ethnicities were overrepresented in Jilliby at 0.8%, 1.2%, and 1.6% respectively, compared to regional averages of 0.5%, 1.0%, and 0.7%.

Jilliby hosts a notably older demographic compared to the national average

The median age in Jilliby is 43 years, significantly higher than Greater Sydney's average of 37 years and exceeding the national average of 38 years. The age profile shows a prominent group aged 15-24 (17.9%), which is larger compared to Greater Sydney and above the national average of 12.7%. Meanwhile, the 25-34 age group is smaller at 5.5%. Since 2021, the 75-84 age group has grown from 4.1% to 6.6%, while the 15-24 cohort increased from 16.4% to 17.9%. Conversely, the 5-14 age group declined from 14.1% to 12.3%, and the 55-64 group decreased from 14.6% to 13.4%. By 2041, demographic projections indicate significant shifts in Jilliby's age structure. The 75-84 age cohort is projected to rise substantially, increasing by 64 people (56%) from 115 to 180. Notably, the combined 65+ age groups are expected to account for 69% of total population growth, reflecting the area's aging demographic profile. In contrast, the 0-4 and 55-64 cohorts are projected to experience population declines.