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, and new addresses validated by AreaSearch, Castletown's population is estimated at around 4026 as of Nov 2025. This reflects an increase of 58 people (1.5%) since the 2021 Census, which reported a population of 3968 people. The change is inferred from the resident population of 4019, estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024, and an additional 8 validated new addresses since the Census date. This level of population equates to a density ratio of 1150 persons per square kilometer, which is relatively in line with averages seen across locations assessed by AreaSearch. Population growth for the area was primarily driven by natural growth that contributed approximately 54% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with a base year of 2022. For areas not covered by this data, and to estimate growth across all areas in the years post-2032, AreaSearch is utilising growth rates by age cohort provided by the ABS in its latest Greater Capital Region projections (released in 2023, based on 2022 data). Examining future population trends, a population increase just below the median of Australian non-metropolitan areas is expected. The Castletown statistical area (Lv2) is expected to increase by 471 persons to 2041 based on aggregated SA2-level projections, reflecting an increase of 14.7% in total 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 allocated from statistical area data indicates Castletown averaged around 14 new dwelling approvals each year over the past five financial years, totalling an estimated 70 homes. As of FY-26, six approvals have been recorded. On average, 0.8 new residents arrived per new home annually between FY-21 and FY-25, suggesting new construction is matching or outpacing demand. The average construction value of new properties was $486,000, indicating developers are targeting the premium market segment with higher-end properties.

This financial year has seen $20.2 million in commercial approvals, demonstrating moderate levels of commercial development. Compared to Rest of WA, Castletown has similar development levels per person, preserving market equilibrium consistent with surrounding areas. However, this is lower than nationally, reflecting market maturity and possible development constraints. Ninety-four percent of new developments are detached dwellings, with six percent being townhouses or apartments, preserving the area's suburban nature and attracting space-seeking buyers.

Castletown has around 244 people per approval, indicating a low-density area. Future projections estimate Castletown will add 593 residents by 2041, with development keeping reasonable pace with projected growth, though increasing competition among buyers is expected as the population expands.

Castletown has limited levels of nearby infrastructure activity, ranking in the 9thth percentile nationally

No changes can significantly affect an area's performance like alterations to local infrastructure, major projects, and planning initiatives. AreaSearch has identified zero projects that are anticipated to 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. Below is a list detailing those most likely to be relevant.

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

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Employment conditions in Castletown demonstrate exceptional strength compared to most Australian markets

Castletown's workforce is balanced across white and blue-collar jobs with varied sector representation. As of September 2025, its unemployment rate is 1.9%.

Over the past year, employment has been relatively stable. The unemployment rate in Castletown is 1.4% lower than Rest of WA's rate of 3.3%, and workforce participation is similar at 59.4%. Employment is concentrated in retail trade, transport, postal & warehousing, and health care & social assistance. Notably, employment in transport, postal & warehousing is 2.2 times the regional average, while mining has limited presence at 5.0% compared to the regional average of 11.7%.

The area appears to offer limited local employment opportunities. Between September 2024 and September 2025, employment levels increased by 0.4%, labour force grew by 0.8%, causing the unemployment rate to rise by 0.4 percentage points. In contrast, Rest of WA saw employment rise by 1.4% and unemployment fall by 0.2 percentage points over the same period. Jobs and Skills Australia's national employment forecasts from May-25 project that national employment will expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Castletown's employment mix suggests local employment should increase by 5.5% over five years and 11.8% over ten years, based on a simple weighting extrapolation for illustrative purposes.

Income levels align closely with national averages, indicating typical economic conditions for Australian communities according to AreaSearch analysis

The suburb of Castletown's income level is very high nationally according to the latest ATO data aggregated by AreaSearch for financial year 2023. The median income among taxpayers in Castletown is $58,607 and the average income stands at $76,108. This compares with figures for Rest of WA which are $59,973 and $74,392 respectively. Based on Wage Price Index growth of 9.62% since financial year 2023, current estimates would be approximately $64,245 (median) and $83,430 (average) as of September 2025. Census data reveals household, family and personal incomes all rank modestly in Castletown, between the 42nd and 55th percentiles. Looking at income distribution, 32.7% of the population fall within the $1,500 - 2,999 income range, which is consistent with broader trends across the surrounding region showing 31.1% in the same category. After housing expenses, 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's dwelling structure, as per the latest Census evaluation, 93.6% were houses while 6.3% consisted of other dwellings such as semi-detached homes, apartments, and 'other' dwellings. This contrasted with Non-Metro WA's figures of 89.0% houses and 10.9% other dwellings. Home ownership in Castletown stood at 32.6%, with mortgaged dwellings making up 35.7% and rented ones comprising 31.7%. The median monthly mortgage repayment was $1,717, higher than Non-Metro WA's average of $1,517. The median weekly rent in Castletown was recorded at $300, compared to Non-Metro WA's $260. Nationally, Castletown's mortgage repayments were lower than the Australian average of $1,863, and rents were substantially below the national figure of $375.

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

Family households account for 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 constitute the remaining 30.1%, with lone person households at 27.6% and group households comprising 2.3% of the total. The median household size is 2.4 people, which aligns with the average for the Rest of WA.

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 disparity presents both challenges and opportunities for targeted educational initiatives. Bachelor degrees are the most common at 10.5%, followed by graduate diplomas (1.4%) and postgraduate qualifications (1.3%). Vocational credentials are prevalent, with 42.8% of residents aged 15+ holding them, including advanced diplomas (8.6%) and certificates (34.2%).

Educational participation is high at 31.6%, with 12.9% in primary education, 10.4% in secondary education, and 1.5% pursuing tertiary education.

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 operating within the town, all of which are bus routes. There is one individual route servicing these stops, collectively providing 15 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 178 meters from the nearest stop.

Service frequency averages two trips per day across all routes, equating to 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 results with common conditions prevalent across both young and elderly residents.

Private health cover is high at approximately 57% (~2,311 people). The most common conditions are asthma (8.9%) and arthritis (7.8%). 69.2% of residents report no medical ailments, compared to 68.9% in Rest of WA. 16.5% of residents are aged 65 and over (664 people), lower than the 18.2% in Rest of WA. Seniors' health outcomes are strong, outperforming general population metrics.

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

Castletown, surveyed in August 2021, had a cultural diversity index of below average. Its population was predominantly Australian citizens (85.5%), born in Australia (87.1%), and speaking English at home (95.1%). Christianity was the dominant religion (42.2%), with Judaism notably underrepresented at 0% compared to Rest of WA's 0.1%.

Ancestry-wise, Australians topped the list at 36.2%, followed by English at 30.7% and Scottish at 6.9%. Notable differences were seen in New Zealanders (1.1% vs regional 0.9%), South Africans (0.8% vs 0.7%), and Maori (0.9% vs 0.8%).

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

Castletown has a median age of 37, which is lower than the Rest of WA figure of 40 and nearly matches Australia's median age of 38 years. Compared to the Rest of WA average, Castletown has an over-representation of the 15-24 cohort (12.5% locally) and an under-representation of the 55-64 year-olds (10.5%). Between 2021 and now, the 35 to 44 age group has grown from 13.4% to 15.0%, while the 25 to 34 cohort increased from 12.2% to 13.4%. Conversely, the 45 to 54 cohort has declined from 12.2% to 10.9%. By 2041, demographic modeling suggests Castletown's age profile will evolve significantly. The 25 to 34 age cohort is projected to expand by 263 people (49%), growing from 539 to 803. Conversely, both the 55 to 64 and 15 to 24 age groups are projected to see reduced numbers.