Sans Souci (NSW)

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According to investigations of ABS demographic releases for the wider region alongside newly verified addresses tracked by Districts since the Census, the population of the suburb of Sans Souci is projected to be approximately 10,940 as of May 2026. This represents an addition of 76 people (0.7%) relative to the 2021 Census, which documented a population of 10,864 residents. The shift is calculated from a resident base of 10,909, determined by Districts after examining the latest ABS ERP release (June 2025) and adding 71 validated new addresses registered since the Census. This population level corresponds to a density of 3,563 persons per square kilometer, placing the locality in the top quartile of domestic areas evaluated by Districts. Growth within the locality was largely fueled by offshore migration, which accounted for approximately 76.0% of the overall population rise over recent periods.

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The suburb of Sans Souci features a highly educated labor force with a strong concentration of professional service workers, an unemployment rate of only 2.8%, and an estimated job growth rate of 2.8% over the past year, according to Districts aggregations of regional statistical data. In March 2026, 6,277 local citizens were employed, with the unemployment rate sitting 1.3% below the Greater Sydney figure of 4.1%, while workforce participation closely matched the metropolitan benchmark of 69.1%. Census responses indicate that a substantial 40.4% of residents worked from home, though this may reflect the influence of COVID-19 lockdown restrictions.

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The suburb of Sans Souci has a median taxpayer income of $55,519 and an average of $76,857, according to postcode-level ATO data compiled by Districts for the 2023 financial year. This is exceptionally high on a national scale, though it sits below the Greater Sydney median of $60,817 and average of $83,003. Factoring in Wage Price Index growth of 10.32% since the 2023 financial year, current estimates would stand at roughly $61,249 for the median and $84,789 for the average as of March 2026. Income data from the 2021 Census shows that household, family, and individual earnings in the area rank around the 58th percentile nationally. The largest group represents 28.7% of residents (3,139 people) in the $1,500 - 2,999 bracket, which aligns with broader regional patterns where fall into the same tier. High accommodation costs absorb of earnings, yet strong wages keep disposable income at the th percentile, and the local SEIFA income index ranks in the th decile.

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The housing stock in the suburb of Sans Souci, as measured at the most recent Census, consisted of 48.8% detached houses and 51.3% alternative dwellings such as semi-detached properties, units, or other formats, compared to the Sydney metropolitan distribution of 55.9% houses and 44.1% alternative dwellings. Meanwhile, home ownership rates in the suburb of Sans Souci were higher than the Sydney metro average, standing at 41.2%, while the remaining properties were either mortgaged (31.3%) or rented (27.5%). The median monthly home loan payment in the area was significantly higher than the Sydney metro median at $2,700, and the median weekly rent was recorded at $500, compared to Sydney metro averages of $2,427 and $470. On a national scale, mortgage payments in the suburb of Sans Souci are much higher than the Australian median of $1,863, and rent levels are well above the national benchmark of $375.

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Families make up the majority of households at 69.4%, which includes 32.6% couples raising children, 24.8% couples without children, and 11.1% single parents. Non-family living arrangements account for the remaining 30.6%, with single-person households representing 28.6% and group households making up 1.9% of the total. The median household size of 2.5 residents is slightly below the Greater Sydney average of 2.7.

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Academic credentials in the suburb of Sans Souci sit below regional marks, with 29.4% of residents aged 15+ holding a tertiary degree compared to 38.7% across the SA3 region. This difference points to opportunities for future educational growth and academic attainment. Undergraduate degrees are the most common credential at 21.1%, followed by postgraduate degrees (6.5%) and graduate diplomas (1.8%). Vocational and technical training is prominent, with 32.9% of residents aged 15+ holding trade credentials, consisting of advanced diplomas (12.5%) and certificates (20.4%).

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Analysis of local transit reveals 84 active public transport stops located within the suburb of Sans Souci, consisting of various bus options. These stops are connected to 17 different routes, providing a total of 1,692 passenger journeys each week. Local transit access is rated as excellent, with residents living an average of 143 meters from the nearest stop. Given the residential nature of the suburb, most working residents travel outside the area for employment, with private cars remaining the primary mode of travel at 85% and trains accounting for 6%. Household vehicle ownership averages 1.3 cars per home. A high proportion of residents, at 40.4%, work from home, based on the 2021 Census, which may reflect the impact of pandemic conditions.

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Assessments of local health data indicate positive outcomes throughout the suburb of Sans Souci, based on Districts analysis of mortality statistics and the occurrence of long-term health issues, with both youth and senior groups showing a low prevalence of common conditions. The proportion of residents with private health insurance is high, representing approximately 57% of the population (~6,267 people), compared to 59.9% across Greater Sydney.

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The suburb of Sans Souci displays a high degree of cultural diversity, with 32.0% of the population born outside Australia and 40.5% speaking a non-English language at home. Christianity is the predominant religious affiliation, representing 72.8% of the local population, compared to 49.2% across Greater Sydney.

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With a median age of 44, the suburb of Sans Souci is older than the Greater Sydney median of 37 and the national average of 38. The 75 - 84 age bracket is highly represented at 8.9% compared to Greater Sydney, while the 25 - 34 cohort is less common at 10.3%. Since the 2021 Census, the proportion of residents aged 85+ has increased from 3.3% to 4.5% of the total population, whereas the 45 to 54 group has decreased from 14.5% to 12.6%. Projections indicate that the age profile in the suburb of Sans Souci will shift considerably by 2041, led by the 85+ cohort which is expected to expand by 87% (427 people) to reach from . This aging trend is prominent, with residents aged + accounting for of the forecast growth, while the to and to age brackets are expected to decrease in size.

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Sans Souci currently has an estimated 590 children under 5 years old, comprising approximately 334 children aged 0-2 and 223 children aged 3-4. This cohort declined by an estimated 1% since the previous census. while population forecasts indicate future decline, with an anticipated decrease of 17% by 2041 (to approximately 491 children). Meanwhile the 5-12 cohort currently amounts to 883. Birth rates in the area have averaged 10.6 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.