Jilliby

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

As of Feb 2026, the population of Jilliby is estimated at around 1,766, reflecting an increase of 72 people since the 2021 Census. This growth represents a 4.3% increase from the previous figure of 1,694 people. The change was inferred from AreaSearch's estimation of the resident population as 1,758 following examination of the latest ERP data release by the ABS in June 2024, along with validation of two new addresses since the Census date. This results in a density ratio of 21 persons per square kilometer. Jilliby's growth rate exceeded that of its SA4 region at 3.7%, making it a growth leader. Overseas migration contributed approximately 47.0% to overall population gains, with all drivers including natural growth and interstate migration being positive factors.

AreaSearch projections for Jilliby are based on ABS/Geoscience Australia data released in 2024 using 2022 as the base year, or NSW State Government's SA2 level projections released in 2022 with a 2021 base year for areas not covered by this data. Growth rates by age group are applied to all areas from these aggregations for years 2032 to 2041. By 2041, the suburb of Jilliby is expected to expand by 114 persons, reflecting a total increase of 6.0% over the 17-year period, which is just below the median national growth rate for areas.

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

Based on AreaSearch analysis of ABS building approval numbers from statistical area data, Jilliby averaged approximately two new dwelling approvals annually over the past five financial years, totalling an estimated eleven homes. So far in FY26, one approval has been recorded. On average, 4.7 people moved to the area per year for each dwelling built between FY21 and FY25, indicating significant demand exceeding supply. New properties were constructed at an average expected construction cost value of $419,000, slightly above the regional average.

There have been $3.6 million in commercial approvals this financial year, reflecting the area's residential character. Compared to Greater Sydney, Jilliby shows substantially reduced construction activity, with 70.0% below the regional average per person. This scarcity typically strengthens demand and prices for existing properties, though recent construction activity has intensified. Nationally, the level is also below average, suggesting the area's maturity and possible planning constraints. Recent development has consisted entirely of standalone homes, maintaining Jilliby's traditional low density character with a focus on family homes.

The estimated population count per dwelling approval is 584 people, reflecting its quiet, low activity development environment. Population forecasts indicate Jilliby will gain 106 residents by 2041, according to the latest AreaSearch quarterly estimate. Building activity appears to be keeping pace with growth projections, though buyers may experience heightened competition as the population grows.

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 area. Notable 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.

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The labour market in Jilliby shows considerable strength compared to most other Australian regions

Jilliby's workforce is skilled with notable representation in construction. The unemployment rate was 3.2% as of the past year, showing a growth of 3.4%. As of December 2025, 1,004 residents were employed, with an unemployment rate of 3.2%, below Greater Sydney's 4.2%.

Workforce participation matched Greater Sydney's 70.2%. Home work was high at 31.4% due to Census responses, considering Covid-19 lockdown impacts. Dominant sectors include construction, education & training, and health care & social assistance. Construction had a strong share of employment, 1.6 times the regional level.

Professional & technical had limited presence with 5.1%, compared to 11.5% regionally. Local employment opportunities appeared limited based on Census data comparison. In the 12-month period ending May-25, employment increased by 3.4% while labour force rose by 3.5%, causing unemployment to rise by 0.2 percentage points. National employment forecasts from Jobs and Skills Australia project a growth of 6.6% over five years and 13.7% over ten years. Applying these 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 an illustrative extrapolation not accounting for localised population projections.

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

In AreaSearch's latest postcode level ATO data released for financial year ending June 2023, Jilliby suburb had a median income among taxpayers of $61,889 and an average of $75,203. This was higher than the national average. In Greater Sydney, the median income was $60,817 with an average of $83,003. Based on Wage Price Index growth of 8.86% from June 2023 to September 2025, estimated incomes would be approximately $67,372 (median) and $81,866 (average). According to the 2021 Census, household incomes ranked at the 94th percentile ($2,713 weekly), while personal incomes were at the 60th percentile. The earnings profile showed that 529 residents earned between $1,500 and $2,999 weekly, comprising 30.0% of the population, similar to broader regional trends (30.9%). A substantial proportion, 42.8%, earned above $3,000 weekly, indicating strong economic capacity in the area. After housing costs, residents retained 87.8% of their income, reflecting strong purchasing power. The area's SEIFA income ranking placed it in the 7th decile.

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

The latest Census data shows that in Jilliby, 98.0% of dwellings are houses, with the remaining 2.0% comprising semi-detached homes, apartments, and other types of accommodation. This is distinct from Sydney metropolitan areas where 55.9% of dwellings are houses and 44.1% are other types. Home ownership in Jilliby stands at 41.5%, with mortgaged properties making up 48.3% and rented dwellings accounting for 10.2%. The median monthly mortgage repayment in Jilliby is $2,564, exceeding the Sydney metro average of $2,427. Weekly rent in Jilliby is recorded at $445, compared to $470 in Sydney metropolitan areas. Nationally, Jilliby's median monthly mortgage repayments are higher than the Australian average of $1,863, and weekly rents are substantially above the national figure of $375.

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

Family households account for 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 constitute the remaining 9.0%, with lone person households at 7.2% and group households comprising 2.0% of the total. The median household size is 3.4 people, 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 served by 13 different routes that collectively facilitate 120 weekly passenger trips. The accessibility of these transport services is rated as good, with residents on average located 305 meters from the nearest stop. As a predominantly residential area, most residents commute outward for work or other purposes. Cars remain the primary mode of transportation, used by 96% of residents. On average, there are 2.7 vehicles per dwelling in Jilliby, which is higher than the regional average.

According to the 2021 Census, a significant portion of residents, specifically 31.4%, work from home, which may be influenced by COVID-19 conditions. The frequency of service across all routes averages 17 trips per day, equating to approximately one 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 superior health outcomes based on AreaSearch's assessment of mortality rates and chronic condition prevalence. Both young and old age cohorts exhibit low prevalence of common health conditions.

The rate of private health cover is high at approximately 57% of the total population (~1,000 people), compared to 59.9% across Greater Sydney. Mental health issues and arthritis are the most prevalent medical conditions in the area, affecting 8.8 and 8.0% of residents respectively. A total of 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 generally typical. The area has 21.1% of residents aged 65 and over (372 people), which is higher than the 15.4% 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. Christianity was the main religion in Jilliby, comprising 62.6% of people, compared to 49.2% across Greater Sydney. The top three ancestry groups were Australian (34.3%), English (32.1%), and Irish (8.4%).

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

Jilliby hosts a notably older demographic compared to the national average

The median age in Jilliby is 43 years, which is considerably higher than Greater Sydney's average of 37 years and exceeds the national average of 38 years. The age profile shows that those aged 45-54 years are particularly prominent at 16.7%, while the 25-34 age group is comparatively smaller at 5.3%. Since 2021, the 75 to 84 age group has grown from 4.1% to 7.0% of the population, and the 65 to 74 cohort increased from 11.1% to 12.5%. Conversely, the 5 to 14 age group declined from 14.1% to 12.7%, and the 25 to 34 age group dropped from 6.6% to 5.3%. Looking ahead to 2041, demographic projections reveal significant shifts in Jilliby's age structure. The 75 to 84 age cohort is projected to rise substantially by 63 people, from 123 to 187. Notably, the combined 65+ age groups will account for 69% of total population growth, reflecting the area's aging demographic profile. Conversely, the 0 to 4 and 55 to 64 cohorts are expected to experience population declines.