Mount Ousley (NSW)

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According to evaluations of ABS population revisions for the broader region and fresh physical locations verified by Districts since the Census, the suburb of Mount Ousley has a population calculated at approximately 1,657 in May 2026. This indicates a rise of 46 people (2.9%) from the 2021 Census, which counted a population of 1,611 people. This shift is determined from the resident population of 1,656, calculated by Districts using the most recent ERP data from the ABS (June 2025) along with 1 validated new address since the Census date. This size of population represents a density of 2,071 persons per square kilometer, which exceeds the typical levels observed across nationwide locations tracked by Districts. The suburb of Mount Ousley's 2.9% post-census growth is within 1.8 percentage points of the SA3 area (4.7%), showing competitive expansion characteristics. Growth in the local population was mostly generated by arrivals from overseas, who made up about 87.0% of all population increases in recent times.

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Mount Ousley possesses a well-educated workforce, with essential services sectors well represented, an unemployment rate of 4.6%, and 2.0% in estimated employment growth over the past year, based on Districts aggregation of statistical area data. As of March 2026, 851 residents are in work while the unemployment rate is 0.5% above Regional NSW's rate of 4.1%, and workforce participation is fairly standard (64.7% compared to Regional NSW's 60.6%). Based on Census responses, a high 38.1% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

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Taxpayer statistics from the ATO aggregated by Districts for the 2023 financial year show that the suburb of Mount Ousley has some of the highest income levels in the nation. The median taxpayer income is $60,305 and the average stands at $81,053, compared to Regional NSW statistics of $52,390 and $65,215. Adjusted for a 10.32% rise in the Wage Price Index since the 2023 financial year, current local figures are estimated at approximately $66,528 for the median and $89,418 for the average as of March 2026. According to the Census, overall household incomes are situated high up at the 83rd percentile ($2,293 weekly), although individual personal incomes are lower at the 55th percentile. Looking at weekly income brackets, the $1,500 - 2,999 category is the largest, containing of residents ( people), which is close to the wider region where this group makes up . High-income earners are prominent, with bringing in more than weekly, pointing to high purchasing capacity. Once housing expenses are paid, households retain of their earnings, and the local SEIFA financial ranking places the area in the th decile.

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At the time of the latest Census, residential properties in the suburb of Mount Ousley consisted of 94.4% separate houses and 5.6% alternative housing types like townhouses, apartments, or other structures, compared to Regional NSW which had 82.6% separate houses and 17.4% other dwellings. The level of outright home ownership was high at 48.1%, which is ahead of Regional NSW, while the remaining properties were being purchased with a mortgage (36.9%) or rented (15.0%). The median monthly home loan repayment was $2,450, which is well above the Regional NSW average of $1,733, and the median weekly rent was $500, compared to $330 in Regional NSW. Nationally, local mortgage repayments are considerably higher than the Australian average of $1,863, and rents are also significantly higher than the national figure of $375.

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Families make up the vast majority of local households at 77.6%, consisting of couples with children (37.2%), couples without children (29.2%), and single parents (9.9%). The remaining 22.4% are non-family households, which are mostly people living alone (18.1%) along with group households (3.3%). The median household size of 2.8 people is larger than the average of 2.4 across Regional NSW.

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Qualifications among residents are exceptionally high compared to broader averages, with 35.4% of those aged 15+ holding a university degree, compared to 21.3% in the Rest of NSW and 25.2% in the SA4 region. This educational profile prepares the area well for professional and technical roles. Undergraduates holding bachelor degrees are the largest cohort at 21.1%, followed by postgraduate degree holders (10.1%) and graduate diploma recipients (4.2%). Practical and vocational education is also common, with 32.5% of residents aged 15+ holding trade qualifications, consisting of advanced diplomas (11.1%) and certificates (21.4%).

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Analysis of public transport shows there are 7 operational transit stops within the suburb of Mount Ousley, which are served by buses. These locations are connected to 9 distinct routes, which run a combined total of 74 passenger trips every week. Access to transit is rated as excellent, with residents living an average of 172 meters from their nearest stop. Because this is a residential suburb, most workers travel outside the area to work, and private cars remain the primary method of travel at 93%. Households own an average of 1.6 vehicles. A significant proportion of residents (38.1%) worked from home, according to the 2021 Census, which may be reflective of pandemic conditions.

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The suburb of Mount Ousley displays positive health profiles based on Districts assessments of mortality rates and long-term illnesses, with low rates of common health issues observed in both younger and older cohorts, and private health insurance membership is high at approximately 59% of the population (976 people), compared to 51.9% across Regional NSW.

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The suburb of Mount Ousley has a higher level of cultural diversity than average, with 18.6% of residents born outside Australia and 14.5% speaking a language other than English in their homes. Christianity is the primary religion, followed by 53.5% of residents in the suburb of Mount Ousley, which is slightly below the 55.9% recorded across Regional NSW.

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The median age of 41 years in the suburb of Mount Ousley is slightly below the Regional NSW average of 43, but sits just above the national average of 38 years. Young people aged 15 - 24 are well represented at 15.9% of the population compared to Regional NSW, while older adults aged 65 - 74 are less common at 8.5%. Post-2021 Census statistics show that younger residents have pulled the median age down by 1.0 years to 41. Key shifts include the 25 to 34 age group increasing from 10.0% to 12.8% of the population, and the 15 to 24 group rising from 13.7% to 15.9%. Meanwhile, the 55 to 64 group fell from to , and those aged to dropped from to . Population projections for show significant shifts ahead for the suburb of Mount Ousley. The to cohort is expected to grow the most, rising by (adding residents to reach ), whereas the to group is expected to shrink by residents.

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Mount Ousley currently has an estimated 82 children under 5 years old, comprising approximately 50 children aged 0-2 and 32 children aged 3-4. This cohort declined by an estimated 4% since the previous census. though population forecasts indicate future growth, with an anticipated increase of 41% by 2041 (to approximately 116 children). Meanwhile the 5-12 cohort currently amounts to 137. Birth rates in the area have averaged 9.1 per 1,000 residents over the latest two-year period, a moderate rate (within the middle tier nationally). This rate has slowed down slightly in recent years however.