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

Based on analysis of ABS population updates for the broader area, the estimated population of the suburb of Silverdale (NSW) is around 6,088 as of Feb 2026. This figure reflects an increase of 1,545 people since the 2021 Census, which reported a population of 4,543 people. The change was inferred from the resident population of 5,508 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 227 validated new addresses since the Census date. This level of population equates to a density ratio of 125 persons per square kilometer. The suburb's growth rate of 34.0% since the 2021 census exceeded both the state's (7.8%) and Greater Sydney's growth rates, marking it as a regional growth leader. Interstate migration contributed approximately 72.0% of overall population gains during recent periods, although all drivers including natural growth and overseas migration were positive factors.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with 2021 as the base year. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. By 2041, based on aggregated SA2-level projections, the suburb is expected to increase by 921 persons, reflecting an overall increase of 5.6% 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 allocated from statistical area data shows Silverdale recorded around 100 residential properties granted approval per year over the past five financial years, totalling an estimated 501 homes. As of FY-26, 21 approvals have been recorded. Over these five years (FY-21 to FY-25), each dwelling built gained an average of 2.4 new residents, reflecting robust demand that supports property values. New homes are being built at an average expected construction cost value of $429,000, somewhat higher than regional norms, indicating quality-focused development.

This financial year, $3.0 million in commercial approvals have been registered, suggesting the area's residential character. Building activity shows 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 341 residents through to 2041, according to the latest AreaSearch quarterly estimate. 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 strong levels of nearby infrastructure activity, ranking in the top 30% nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified three projects likely to impact the region: Warragamba Dam Raising Project, Western Sydney Pumped Hydro Project, West Link Business Park, and South West Growth Area. The following details those considered most relevant.

Professional plan users can use the search below to filter and access additional projects.

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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, notable in construction. Its unemployment rate is 1.1%. As of December 2025, 3,202 residents are employed at an unemployment rate of 3.1%, below Greater Sydney's 4.2%.

Workforce participation is high at 77.8% compared to Greater Sydney's 70.2%. A significant proportion, 28.9%, work from home. Major industries include construction, education & training, and health care & social assistance. Construction employment is particularly high, at 2.4 times the regional level.

Conversely, professional & technical jobs are lower at 4.3% versus the regional average of 11.5%. Local job opportunities appear limited based on resident population vs working population. Over a year, labour force and employment decreased by 4.5%, while unemployment remained stable. In contrast, Greater Sydney saw employment growth of 2.2%. Jobs and Skills Australia's May-25 forecasts suggest national employment will expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Silverdale's mix indicates local employment should increase by 6.0% over five years and 12.4% over ten years, though this is a simple extrapolation for illustrative purposes only.

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

The suburb of Silverdale has a higher than average national income level according to latest ATO data aggregated by AreaSearch for financial year 2023. The median income among taxpayers in Silverdale is $65,388 and the average income stands at $73,629, compared to Greater Sydney's figures of $60,817 and $83,003 respectively. Based on Wage Price Index growth of 8.86% since financial year 2023, current estimates for Silverdale would be approximately $71,181 (median) and $80,153 (average) as of September 2025. Census data shows that household, family and personal incomes in Silverdale rank highly nationally, between the 80th and 93rd percentiles. 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 broader trends across regional levels showing 30.9% in the same category. A substantial proportion of high earners (41.9%) have incomes above $3,000 per week, indicating strong economic capacity throughout Silverdale. High housing costs consume 15.6% of income, however, strong earnings still place disposable income at the 92nd percentile nationally. The area's SEIFA income ranking places it 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, were 99.5% houses and 0.5% other dwellings (semi-detached, apartments, 'other' dwellings), contrasting with Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Silverdale was at 29.7%, similar to Sydney metro, with mortgaged dwellings at 60.7% and rented ones at 9.7%. The median monthly mortgage repayment in Silverdale was $2,600, exceeding the Sydney metro average of $2,427. The median weekly rent figure for Silverdale was $500, compared to Sydney metro's $470. Nationally, Silverdale's mortgage repayments were significantly higher than the Australian average of $1,863, while rents were substantially above the national figure of $375.

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

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, larger than the Greater Sydney average of 2.7.

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, with 29.7% of residents currently enrolled in formal education, comprising 11.0% in primary, 9.3% in secondary, and 2.6% in 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 has 50 active public transport stops offering mixed bus services. These are covered by 19 routes, resulting in 209 weekly passenger trips. Transport accessibility is deemed good with residents residing on average 263 meters from the nearest stop. Predominantly residential, most Silverdale residents commute outward using cars, which remain the primary mode at 96%. The area has an average of 2.4 vehicles per dwelling, exceeding regional averages. According to the 2021 Census, 28.9% of residents work from home, potentially due to COVID-19 conditions.

Service frequency across all routes is approximately 29 trips daily, equating to about 4 weekly trips per individual stop.

Silverdale's residents are healthier than average in comparison to broader Australia with a fairly standard level of common health conditions seen across both young and old age cohorts

Silverdale's health data shows positive results. Mortality rates and health conditions align with national averages.

Common health conditions are similar across age groups, with asthma affecting 8.2% and arthritis impacting 7.1%. Private health cover is high at 56%, compared to Greater Sydney's 59.9%. Most residents, 72.2%, report no medical ailments, slightly lower than Greater Sydney's 74.6%. Under-65 residents have better-than-average health outcomes. The area has a lower proportion of seniors, at 11.5% (700 people), compared to Greater Sydney's 15.4%. Senior health outcomes are above average and in line with national rankings.

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

Silverdale was found to have below average cultural diversity, with 89.3% of its population born in Australia, 94.5% being citizens, and 91.5% speaking English only at home. The predominant religion in Silverdale is Christianity, comprising 70.9% of the population, compared to 49.2% across Greater Sydney. In terms of ancestry, the top three groups represented in Silverdale are Australian (29.1%), English (24.9%), and Maltese (7.3%).

These percentages are substantially higher than their respective regional averages: Australian (17.8%), English (19.0%), and Maltese (1.0%). Additionally, there are notable overrepresentations of certain ethnic groups: Croatian at 1.6% in Silverdale compared to the regional average of 0.7%, Hungarian at 0.5% versus 0.3%, and Serbian at 0.8% against a regional average of 0.5%.

Silverdale's population is younger than the national pattern

At 34 years, Silverdale's median age is lower than Greater Sydney's average of 37 years, which is also younger than Australia's median age of 38 years. Compared to Greater Sydney, Silverdale has a higher proportion of residents aged 5-14 (16.5%) but fewer residents aged 25-34 (12.7%). Between the 2021 Census and now, the proportion of residents aged 5-14 has increased from 14.9% to 16.5%. Conversely, the proportion of residents aged 45-54 has decreased from 14.1% to 12.2%. By 2041, population forecasts indicate significant demographic changes for Silverdale. The cohort aged 65-74 is projected to grow by 32%, adding 144 residents to reach a total of 601. Residents aged 65 and above will drive 59% of the population growth, highlighting the trend towards an aging demographic. Conversely, population declines are projected for the cohorts aged 15-24 and 5-14.