Silverdale (NSW)

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

As of Nov 2025, the estimated population for the Silverdale (NSW) statistical area (Lv2) is around 6,088. This reflects a growth of 1,545 people since the 2021 Census, which reported a population of 4,543. The change was inferred from AreaSearch's estimation of the resident population at 5,508 in Jun 2024, based on ABS ERP data release and validation of new addresses. This results in a population density ratio of 125 persons per square kilometer. Silverdale's growth rate of 34.0% since the 2021 Census exceeded both state (7.6%) and metropolitan area averages. Interstate migration contributed approximately 72.0% to overall population gains during recent periods, with natural growth and overseas migration also being positive factors.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a base year of 2021. Growth rates by age group from these aggregations are applied to all areas until 2041. Future population dynamics project an above median growth for the area, expecting an increase of 930 persons by 2041, reflecting a total increase of 6.0% over the 17 years.

AreaSearch assessment of residential development activity positions Silverdale among the top 25% of areas assessed nationwide

AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, shows Silverdale recorded around 100 residential properties granted approval per year over the past 5 financial years, totalling an estimated 501 homes. As of FY-26, 19 approvals have been recorded. Each dwelling built resulted in an average of 2.4 new residents per year between FY-21 and FY-25, reflecting robust demand that supports property values. New homes are being constructed at an average value of $429,000, somewhat higher than regional norms due to quality-focused development.

This financial year, $3.0 million in commercial approvals have been registered, suggesting the area's residential character. Building activity comprises 98.0% standalone homes and 2.0% townhouses or apartments, maintaining Silverdale's traditional low density character with a focus on family homes appealing to those seeking space.

With around 147 people per dwelling approval, Silverdale exhibits characteristics of a growth area. Looking ahead, Silverdale is expected to grow by 366 residents through to 2041 based on the latest AreaSearch quarterly estimate. Given current development patterns, new housing supply should readily meet demand, offering good conditions for buyers and potentially facilitating population growth beyond current projections.

Silverdale has strong levels of nearby infrastructure activity, ranking in the top 30% nationally

Local infrastructure changes significantly influence an area's performance. AreaSearch identified three key projects potentially impacting this region: Warragamba Dam Raising Project (started 2018), Western Sydney Pumped Hydro Project (announced 2020), West Link Business Park (commenced construction 2019), and South West Growth Area (approved 2017).

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

Silverdale has a balanced workforce with white and blue collar employment. The construction sector is notably represented, with an unemployment rate of 0.9%.

As of September 2025, 3,247 residents are employed, the unemployment rate is 3.3% below Greater Sydney's rate of 4.2%, and workforce participation is high at 70.9%. Employment is concentrated in construction, education & training, and health care & social assistance. Construction employment is particularly specialized, with a share 2.4 times the regional level. Conversely, professional & technical services show lower representation at 4.3% versus the regional average of 11.5%.

The area may offer limited local employment opportunities, as indicated by Census data comparing working population to resident population. In the period from September 2024 to September 2025, Silverdale's labour force decreased by 3.4%, and employment decreased by 3.1%, leading to a fall in unemployment rate of 0.3 percentage points. Meanwhile, Greater Sydney experienced employment growth of 2.1% and labour force growth of 2.4%. State-level data as of 25-Nov-25 shows NSW employment contracted by 0.03%, with an unemployment rate of 3.9%, compared to the national rate of 4.3%. National employment forecasts from May-25 suggest total employment should increase by 6.6% over five years and 13.7% over ten years, but growth varies significantly between sectors. Applying these projections to Silverdale's employment mix indicates local employment could increase by 6.0% over five years and 12.4% over ten years.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

The suburb of Silverdale had a median taxpayer income of $65,388 and an average income of $73,629 in the financial year 2023. This is higher than Greater Sydney's figures of $60,817 and $83,003 respectively, according to data aggregated by AreaSearch from the Australian Taxation Office. By September 2025, estimates based on an 8.86% Wage Price Index growth suggest median and average incomes would be approximately $71,181 and $80,153 respectively in Silverdale. Census data shows household, family, and personal incomes in Silverdale rank between the 80th and 93rd percentiles nationally. In terms of income distribution, 35.9% of Silverdale's population (2,185 individuals) fall within the $1,500 - $2,999 income range, which is consistent with regional trends showing 30.9% in the same category. A substantial proportion of high earners (41.9%) in Silverdale have incomes above $3,000 per week, indicating strong economic capacity. High housing costs consume 15.6% of income, but strong earnings place disposable income at the 92nd percentile nationally. The suburb's SEIFA income ranking places it in the 7th decile.

Silverdale is characterized by a predominantly suburban housing profile

Silverdale's dwelling structure, as per the latest Census evaluation, consisted of 99.5% houses and 0.5% other dwellings such as semi-detached properties, apartments, and 'other' dwellings. Home ownership in Silverdale stood at 29.7%, with 60.7% of dwellings mortgaged and 9.7% rented. The median monthly mortgage repayment in the area was $2,600, while the median weekly rent figure was recorded as $500. Nationally, Silverdale's mortgage repayments were significantly higher than the Australian average of $1,863, with rents substantially above the national figure of $375.

Silverdale features high concentrations of family households, with a median household size of 3.3 people

Family households constitute 90.2% of all households, including 54.6% couples with children, 27.8% couples without children, and 7.2% single parent families. Non-family households comprise the remaining 9.8%, with lone person households at 9.4% and group households making up 0.5%. The median household size is 3.3 people.

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

The area's university qualification rate is 14.7%, significantly lower than Greater Sydney's average of 38.0%. Bachelor degrees are the most common at 10.6%, followed by postgraduate qualifications (2.6%) and graduate diplomas (1.5%). Vocational credentials are prominent, with 44.1% of residents aged 15+ holding them, including advanced diplomas (10.0%) and certificates (34.1%). Educational participation is high at 29.7%, with 11.0% in primary education, 9.3% in secondary education, and 2.6% pursuing tertiary education.

Educational participation is notably high, with 29.7% of residents currently enrolled in formal education. This includes 11.0% in primary education, 9.3% in secondary education, and 2.6% pursuing tertiary education.

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

Silverdale's public transport analysis shows that there are currently 50 active transport stops operating within the area. These stops serve a mix of bus routes, with a total of 19 individual routes in operation. Together, these routes provide a combined weekly passenger trip count of 209.

The accessibility of transport in Silverdale is rated as good, with residents typically located approximately 263 meters from their nearest transport stop. On average, service frequency across all routes amounts to around 29 trips per day, which translates to roughly 4 weekly trips per individual stop.

Silverdale's residents are extremely healthy with prevalence of common health conditions low among the general population and nearer the nation's average across older, at risk cohorts

Analysis of health metrics indicates strong performance in Silverdale with low prevalence of common health conditions among the general population.

This aligns with national averages for older, at-risk cohorts. Approximately 56% (~3,410 people) of the total population has private health cover. The most prevalent medical conditions are asthma and arthritis, affecting 8.2% and 7.1% of residents respectively. A significant majority, 72.2%, report no medical ailments, compared to 0% in Greater Sydney. Silverdale has a higher proportion of seniors aged 65 and over at 10.6% (645 people). While health outcomes among seniors are above average, they require more attention than the broader population.

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

Silverdale's population was found to be below average in cultural diversity, with 89.3% born in Australia and 94.5% being citizens. English is the language spoken at home by 91.5%. Christianity is the predominant religion, making up 70.9%, compared to None% across Greater Sydney.

The top three ancestry groups are Australian (29.1%), English (24.9%), and Maltese (7.3%). Notably, Croatian (1.6%) and Hungarian (0.5%) were overrepresented in Silverdale compared to the regional average of None%. Serbian representation was also higher at 0.8% versus None% regionally.

Silverdale's population is younger than the national pattern

Silverdale's median age is 34 years, lower than Greater Sydney's average of 37 years and Australia's average of 38 years. Compared to Greater Sydney, Silverdale has a higher proportion of residents aged 5-14 (15.6%) but fewer residents aged 75-84 (2.6%). Between the 2021 Census and now, the population aged 25-34 has grown from 13.4% to 14.4%. Conversely, the population aged 45-54 has declined from 14.1% to 12.1%, and the population aged 55-64 has decreased from 12.3% to 11.0%. By 2041, significant demographic changes are forecast for Silverdale. The population aged 65-74 is projected to grow by 32%, adding 137 residents to reach 564. Residents aged 65 and above will drive 67% of population growth, indicating a trend towards an aging population. Conversely, populations aged 15-24 and 35-44 are projected to decline.