Silverdale (NSW)

Silverdale lies within the top quartile of areas nationally for population growth performance according to AreaSearch analysis of recent, and medium to long-term trends

As of November 2025, Silverdale's population is estimated at approximately 5,863 people. This figure reflects a significant increase from the 2021 Census, which reported a population of 4,543 people in the suburb of Silverdale (NSW). The growth of 1,320 people represents an increase of 29.1% since the last census. This estimation is based on AreaSearch's validation of new addresses and examination of the latest ERP data release by the ABS in June 2024, which provided a resident population estimate of 5,580 for Silverdale. An additional 227 validated new addresses were identified since the Census date. The current population density ratio is approximately 121 persons per square kilometer.

Silverdale's growth rate significantly exceeded both the state (6.7%) and metropolitan area averages between the censuses. Interstate migration contributed around 72% of overall population gains during this period, with other factors such as natural growth and overseas migration also playing positive roles. AreaSearch projects future population trends using ABS/Geoscience Australia projections for each SA2 area released in 2024 with a base year of 2022. For areas not covered by these data, NSW State Government's SA2 level projections from 2022 with a base year of 2021 are utilized. Growth rates by age group will be applied to all areas for the years 2032 to 2041. Based on aggregated SA2-level projections, Silverdale is expected to increase its population by 968 persons by 2041, reflecting an overall increase of approximately 10.7% over the 17-year period.

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

AreaSearch analysis of ABS building approval numbers in Silverdale shows around 102 residential properties granted approval per year over the past five financial years, totalling an estimated 513 homes. As of FY-26, 16 approvals have been recorded. On average, each dwelling built between FY-21 and FY-25 has resulted in 2.3 new residents per year, reflecting robust demand that supports property values. The average construction cost value for new homes is $429,000, below regional norms, indicating more affordable housing options.

This financial year, $4.0 million in commercial approvals have been registered, suggesting the area's residential character. New building activity comprises 98% standalone homes and 2% townhouses or apartments, maintaining Silverdale's traditional low density character with a focus on family homes appealing to those seeking space.

With around 128 people per dwelling approval, Silverdale exhibits characteristics of a growth area. According to the latest AreaSearch quarterly estimate, Silverdale is expected to grow by 629 residents through to 2041. Based on 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 very high levels of nearby infrastructure activity, ranking in the top 10% nationally

Changes in local infrastructure significantly affect an area's performance. AreaSearch has identified three projects expected to impact the region: Warragamba Dam Raising Project (commencing 2018), Western Sydney Pumped Hydro Project (anticipated completion by 2026), West Link Business Park (scheduled opening in late 2024), and South West Growth Area (planned completion by mid-2030s).

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

Silverdale has a diverse workforce with both white and blue collar jobs, notably in construction. Its unemployment rate is 0.9%.

As of June 2025, 3,201 residents are employed, with an unemployment rate of 3.3%, below Greater Sydney's 4.2%. Workforce participation is high at 70.9% compared to Greater Sydney's 60.0%. Major employment sectors include construction, education & training, and health care & social assistance. Construction jobs are particularly prevalent, at 2.4 times the regional level.

Conversely, professional & technical jobs are less common, at 4.3% versus the regional average of 11.5%. Local employment opportunities may be limited, as indicated by a lower Census working population compared to resident population. In the 12 months to Jun-25, Silverdale's labour force decreased by 2.3%, with employment down by 2.0%, leading to a 0.3 percentage point drop in unemployment rate. Meanwhile, Greater Sydney saw employment growth of 2.6% and labour force growth of 2.9%, with a 0.3 percentage point rise in unemployment rate. Jobs and Skills Australia's Sep-22 forecasts suggest national employment will expand by 6.6% over five years and 13.7% over ten years, but growth varies by industry sector. Applying these projections to Silverdale's employment mix indicates local employment should 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

Silverdale's median income among taxpayers was $65,388 and average income stood at $73,629 in financial year 2022. This compares to Greater Sydney's figures of $56,994 and $80,856 respectively. By September 2025, estimates suggest median income would be approximately $73,633 and average income $82,914 based on Wage Price Index growth of 12.61%. Census data shows household, family and personal incomes rank highly in Silverdale, between the 80th and 93rd percentiles nationally. Income distribution reveals 35.9% (2,104 individuals) fall within the $1,500 - 2,999 range, consistent with regional levels at 30.9%. A substantial proportion of high earners (41.9%) indicates strong economic capacity. High housing costs consume 15.6% of income, yet disposable income ranks at the 92nd percentile and SEIFA income ranking places Silverdale in the 7th decile.

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

Silverdale's dwelling structures, as per the latest Census, consisted of 99.5% houses and 0.5% other dwellings. In contrast, Sydney metro had 0.0% houses and 0.0% other dwellings. Home ownership in Silverdale stood at 29.7%, with mortgaged dwellings at 60.7% and rented ones at 9.7%. The median monthly mortgage repayment was $2,600, aligning with Sydney metro's average, while the median weekly rent was $500, compared to Sydney metro's $0 and $0. Nationally, Silverdale's mortgage repayments were higher than the Australian average of $1,863, and rents were 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%. This presents both a challenge and an opportunity for targeted educational initiatives. 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 such qualifications - advanced diplomas at 10.0% and certificates at 34.1%.

Educational participation is 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. Schools appear to be located outside the immediate catchment boundaries, requiring families to access them in neighboring areas.

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

Transport analysis shows that Silverdale has 41 active public transport stops, all of which are bus stops. These stops are served by 19 different routes combined offering 203 weekly passenger trips in total. The accessibility of these transport services is considered good, with residents on average being located just 263 meters away from the nearest stop.

On average, there are 29 trips per day across all routes, which works out to approximately four weekly trips per individual bus 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.

Among older, at risk cohorts, prevalence is near the nation's average. Private health cover rate is very high, approximately 56% of the total population (~3,284 people). The most common medical conditions are asthma and arthritis, affecting 8.2 and 7.1% of residents respectively. 72.2% of residents declare themselves completely clear of medical ailments, compared to 0% across Greater Sydney. As of 6th June 20XX, 10.5% of residents are aged 65 and over (615 people). Health outcomes among seniors 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 showed low cultural diversity, with 89.3% born in Australia, 94.5% being citizens, and 91.5% speaking English only at home. Christianity was the predominant religion, accounting for 70.9% of Silverdale's population, compared to None% across Greater Sydney. The top three ancestry groups were Australian (29.1%), English (24.9%), and Maltese (7.3%).

Notably, Croatian (1.6%) and Serbian (0.8%) ethnicities had higher representation in Silverdale than the regional averages of None%.

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 national 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 increased from 13.4% to 14.4%. Conversely, the populations aged 45-54 have decreased from 14.1% to 12.1%, and those aged 55-64 have dropped from 12.3% to 11.0%. By 2041, population forecasts indicate significant demographic changes in Silverdale. The 65-74 age group is projected to grow by 41%, adding 166 residents to reach a total of 571. Residents aged 65 and above will contribute to 55% of the population growth, highlighting aging trends. Conversely, population declines are projected for the 0-4 and 25-34 age groups.