Castletown

Castletown is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends

Based on analysis of ABS population updates for the broader area, as of Nov 2025 the estimated population of Castletown is around 4,120. This reflects an increase of 152 people since the 2021 Census, which reported a population of 3,968. The change is inferred from AreaSearch's estimate of the resident population at 4,119 following examination of the latest ERP data release by the ABS in June 2024, along with an additional 8 validated new addresses since the Census date. This level of population equates to a density ratio of 1,177 persons per square kilometer. Castletown's growth rate of 3.8% since the census positions it within 2.1 percentage points of the SA3 area (5.9%), demonstrating competitive growth fundamentals. Natural growth contributed approximately 54.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data and to estimate growth post-2032, AreaSearch utilises growth rates by age cohort provided by the ABS in its latest Greater Capital Region projections, released in 2023 based on 2022 data. Future population trends suggest a median increase for non-metropolitan areas, with Castletown expected to increase by 485 persons to 2041, reflecting an overall increase of 12.4% over the 17 years.

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

AreaSearch analysis of ABS building approval numbers in Castletown shows an average of 13 new dwelling approvals per year over the past five financial years. This totals an estimated 68 homes. In FY-26, so far, 3 approvals have been recorded.

Over the same period, an average of 0.8 new residents arrived per new home. This pace matches or outpaces demand, offering buyers more options and enabling population growth that could exceed current expectations. The average construction value of these properties is $486,000. Compared to Rest of WA, Castletown has similar development levels per person, preserving market equilibrium consistent with surrounding areas.

However, this level is lower than the national average, reflecting market maturity and possible development constraints. Ninety-four percent of new developments consist of detached houses, while 6% are townhouses or apartments. This sustains the area's suburban identity, favoring family homes suited to buyers seeking space. With around 346 people per dwelling approval, Castletown indicates a developed market. According to AreaSearch's latest quarterly estimate, Castletown is expected to grow by 513 residents through to 2041. Building activity is keeping pace with these growth projections, though buyers may face increased competition as the population grows.

Castletown has limited levels of nearby infrastructure activity, ranking in the 4thth percentile nationally

No factors influence a region's performance more than alterations to its local infrastructure, major projects, and planning initiatives. AreaSearch has identified zero projects that could potentially impact this area. Notable projects include WA Police Satellite Technology Upgrade, Regional And Rural Wa Road Network Safety Improvements, WA Regional Digital Connectivity Program (WARDCP), and Western Australia Coastal Hazards Adaptation. The following details those likely to be most pertinent.

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AreaSearch analysis reveals Castletown significantly outperforming the majority of regions assessed nationwide

Castletown has a balanced workforce with both white and blue collar jobs, representing various sectors. As of June 2025, 2,086 residents are employed, with an unemployment rate of 1.7%.

This is 1.5% lower than Rest of WA's rate of 3.2%, but workforce participation is similar at 59.4%. Major employment sectors include retail trade, transport, postal & warehousing, and health care & social assistance. Castletown specializes in transport, postal & warehousing, with an employment share 2.2 times the regional level. Conversely, mining has a lower representation of 5.0% compared to the regional average of 11.7%.

The area offers limited local employment opportunities, as indicated by the count of Census working population versus resident population. Between June 2024 and June 2025, the labour force decreased by 2.0%, with employment decreasing by 2.2%, resulting in a rise in unemployment rate by 0.2 percentage points. This contrasts with Rest of WA, where employment rose by 1.1% and unemployment fell by 0.6 percentage points during the same period. Jobs and Skills Australia's national employment forecasts from Sep-22 suggest that Castletown's employment should increase by 5.5% over five years and 11.8% over ten years, based on industry-specific projections applied to Castletown's employment mix.

The economic profile demonstrates above-average performance, with income metrics exceeding national benchmarks based on AreaSearch comparative assessment

AreaSearch's data for Castletown in the financial year ending June 2022 shows a median income among taxpayers of $58,607 and an average income of $76,108. Nationally, these figures are high compared to the Rest of WA's median of $57,323 and average of $71,163. By September 2025, based on a 14.2% growth in wages since financial year 2022, estimated incomes would be approximately $66,929 (median) and $86,915 (average). Census data indicates that household, family, and personal incomes in Castletown rank modestly, between the 42nd and 55th percentiles. Income distribution shows that 32.7% of individuals earn between $1,500 and $2,999, which is similar to regional levels at 31.1%. After accounting for housing costs, 85.3% of income remains for other expenses.

Castletown is characterized by a predominantly suburban housing profile, with a higher proportion of rental properties than the broader region

In Castletown, as per the latest Census evaluation, 93.6% of dwellings were houses with 6.3% being other types such as semi-detached homes, apartments, and 'other' dwellings. This is compared to Non-Metro WA's 89.0% houses and 10.9% other dwellings. Home ownership in Castletown stood at 32.6%, with mortgaged dwellings at 35.7% and rented ones at 31.7%. The median monthly mortgage repayment was $1,717, higher than Non-Metro WA's average of $1,517. Median weekly rent in Castletown was $300, compared to Non-Metro WA's $260. Nationally, Castletown's mortgage repayments were lower than the Australian average of $1,863, while rents were substantially below the national figure of $375.

Castletown has a typical household mix, with a fairly typical median household size

Family households comprise 69.9% of all households, including 28.2% couples with children, 30.4% couples without children, and 10.4% single parent families. Non-family households make up the remaining 30.1%, with lone person households at 27.6% and group households comprising 2.3%. The median household size is 2.4 people, which aligns with the Rest of WA average.

Castletown faces educational challenges, with performance metrics placing it in the bottom quartile of areas assessed nationally

The area's university qualification rate is 13.2%, significantly lower than the Australian average of 30.4%. This presents both challenges and opportunities for targeted educational initiatives. Bachelor degrees are most common at 10.5%, followed by graduate diplomas (1.4%) and postgraduate qualifications (1.3%). Vocational credentials are prominent, with 42.8% of residents aged 15+ holding them - advanced diplomas account for 8.6% and certificates for 34.2%.

Educational participation is high at 31.6%, including 12.9% in primary education, 10.4% in secondary education, and 1.5% pursuing tertiary education. Castletown Primary School serves the area with an enrollment of 489 students, operating under typical Australian school conditions (ICSEA: 951) offering balanced educational opportunities. It focuses exclusively on primary education, with secondary options available nearby. The area has fewer school places per 100 residents (11.9) compared to the regional average (16.5), indicating some students may attend schools in adjacent areas.

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

Castletown's public transport analysis shows 34 active stops in operation, all serving buses. These stops are covered by one route, offering a total of 15 weekly passenger trips. Transport accessibility is rated excellent, with residents generally located 178 meters from the nearest stop.

The service frequency averages two trips per day across all routes, resulting in approximately zero weekly trips per individual stop.

Castletown'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

Castletown's health data shows positive outcomes for its residents, with common health conditions seen across both young and old age groups at a standard level. Approximately 57% (~2,365 people) of Castletown's total population has private health cover, compared to 55.3% in the rest of WA.

The most prevalent medical conditions are asthma (8.9%) and arthritis (7.8%). A majority, 69.2%, reported being free from medical ailments, slightly higher than the 68.9% across the rest of WA. Castletown has a lower proportion of seniors aged 65 and over at 16.5% (679 people), compared to 18.2% in the rest of WA. Health outcomes among seniors in Castletown are notably strong, outperforming the general population in health metrics.

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

Castletown's cultural diversity was found to be below average. As of a certain date, 85.5% of its population were citizens, 87.1% were born in Australia, and 95.1% spoke English only at home. Christianity was the predominant religion, comprising 42.2% of Castletown's population.

However, Judaism was overrepresented compared to regional figures, with 0.0% in Castletown versus 0.1% across Rest of WA. The top three ancestry groups were Australian (36.2%), English (30.7%), and Scottish (6.9%). Notably, New Zealanders were overrepresented at 1.1% compared to the regional average of 0.9%, as were South Africans at 0.8% versus 0.7%, and Maori at 0.9% versus 0.8%.

Castletown's population aligns closely with national norms in age terms

Castletown's median age is 37, lower than the Rest of WA figure of 40 but nearly matching Australia's median age of 38 years. Compared to the Rest of WA average, Castletown has an over-representation of the 15-24 cohort (12.4%) and an under-representation of the 55-64 year-olds (10.4%). Between 2021 and present, the 35-44 age group grew from 13.4% to 14.9%, while the 25-34 cohort increased from 12.2% to 13.4%. Conversely, the 45-54 cohort declined from 12.2% to 10.9%. By 2041, Castletown's age profile is projected to evolve significantly. The 25-34 age cohort is expected to expand by 254 people (46%), growing from 552 to 807. Conversely, both the 55-64 and 15-24 age groups are projected to see reduced numbers.