Marian (Qld)

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Drawing from ABS population statistics for the surrounding region alongside new addresses verified by Districts since the Census, the resident count of the suburb of Marian is calculated to be approximately 4,387 as of May 2026. This represents a growth of 163 people (3.9%) relative to the 2021 Census, which recorded 4,224 residents. This calculation stems from an estimated population of 4,363, determined by Districts using the ABS June 2025 ERP data release, combined with an additional 9 validated new addresses registered after the Census. The suburb of Marian has a population density of 53 persons per square kilometer, which indicates residents have plenty of space. Over the last ten years, the suburb of Marian has shown steady expansion with a 1.1% compound annual growth rate, exceeding the broader SA3. The local population gains were mostly driven by natural increase, which accounted for roughly 63.0% of the growth during recent times, though all other components including migration from interstate and overseas remained positive contributors.

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Marian exhibits a diverse labor force encompassing both white collar and blue collar occupations, with manufacturing and industrial fields being particularly prominent. The area recorded an unemployment rate of only 1.3%, alongside an estimated employment growth of 4.9% during the previous year, according to Districts' compilation of statistical area information. By March 2026, the local population employed amounted to 2,426 individuals, while the unemployment rate stood at 2.6% which is lower than the Regional Qld rate of 3.9%. The workforce participation rate in Marian reached 75.6%, significantly exceeding the Regional Qld average of 64.3%. Census data indicated that merely 6.9% of residents engaged in remote work, although the lingering effects of Covid-19 lockdown measures should be taken into account when interpreting these figures.

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According to the ATO postcode data compiled by Districts for the 2023 tax year, taxpayers in this area earn a median income of $71,473 and an average income of $86,063. These figures are very high on a national scale, comparing to a median of $53,146 and an average of $66,593 across Regional Qld. Factoring in a 11.36% increase in the Wage Price Index since the 2023 financial year, current estimated values would be around $79,592 for the median and $95,840 for the average as of March 2026. The 2021 Census indicates that household, family, and individual incomes are all high, placing in the 79th to 87th national percentiles. Income distribution data shows that 35.6% of residents (1,561 individuals) earn between $1,500 and per week, which is similar to the recorded across the broader region. High income earners are prominent, with of individuals earning more than weekly, indicating strong local spending power. Housing costs consume of income, and these high earnings place residents in the th percentile for disposable income, with the SEIFA index for income ranking in the th decile.

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Residential property types in the suburb of Marian at the time of the latest Census consisted of 99.0% separate houses and 1.0% alternative dwellings like townhouses and apartments, compared to Regional Qld where separate houses made up 76.4% and other options accounted for 23.6%. Home ownership rates lagged the regional average, sitting at 21.9%, with the remaining properties occupied by people with mortgages (59.8%) or renters (18.3%). The median monthly mortgage payment was $1,941, which was higher than the Regional Qld average of $1,655, while the median weekly rent was $400, compared to $345 in Regional Qld. Nationally, local mortgage payments exceed the Australian median of $1,863, and weekly rents are also above the national median of $375.

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Families make up the vast majority of households at 87.1%, consisting of couples with children at 48.0%, couples without children at 28.7%, and single parent families at 9.1%. The remaining 12.9% are non-family households, which include lone person households at 11.4% and group shared homes at 1.9%. The median household size is 3.0 people, which is larger than the Regional Qld average of 2.5.

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The region shows relatively low rates of higher education, with only 10.3% of residents holding a university qualification, which is below the national average of 30.4%. Among these graduates, bachelor degrees are the most common at 8.1%, followed by graduate diplomas at 1.3% and postgraduate degrees at 0.9%. Vocational and technical skills are highly prevalent, with 50.8% of the population aged 15 and over possessing vocational qualifications, consisting of advanced diplomas at 8.4% and certificates at 42.4%.

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Public transport is limited to 8 active bus stops operating in the suburb of Marian. These stops are served by 1 routes, which provide a combined total of 10 weekly passenger trips. Local transit access is limited, with residents living an average of 708 meters from their nearest stop. The suburb of Marian is mainly residential, and most commuters travel out of the area, with private cars remaining the primary travel mode at 95%. Households own an average of 2.0 vehicles, which is above the regional average. A relatively low 6.9% of residents worked from home according to the 2021 Census, a figure that may reflect pandemic conditions.

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Health outcomes for residents are generally positive, with mortality rates and chronic illnesses tracking close to national averages. The prevalence of common health issues remains low in the general population, though it rises above the national average for older, higher-risk groups. The rate of private health insurance is high, covering approximately 61% of residents (2,689 people), compared to 52.5% in Regional Qld and a national average of 55.7%.

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The suburb of Marian has lower cultural diversity than average, with citizens making up 89.6% of the population, 94.1% of residents born in Australia, and 98.5% of people speaking only English at home. The most common religious affiliation is Christianity, which is shared by 53.6% of the population, compared to 52.2% across Regional Qld.

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The median age of 32 years in the suburb of Marian is lower than the Regional Qld average of 41 and the national median of 38. Compared to Regional Qld, the suburb of Marian has a larger percentage of children aged 5 - 14 (18.1%) but a smaller share of seniors aged 65 - 74 (6.0%). The concentration of 5 - 14 year-olds is higher than the national average of 12.0%. Since the 2021 Census, the proportion of residents aged 65 to 74 increased from 5.1% to 6.0%, while the group aged 45 to 54 shrank from 13.1% to 11.2%. Demographic projections indicate the age structure will change by with the to group expected to grow the fastest at (adding residents to reach ), while the to group is projected to decrease by residents.

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Marian currently has an estimated 342 children under 5 years old, comprising approximately 183 children aged 0-2 and 122 children aged 3-4. This cohort grew by an estimated 1% since the previous census. while population forecasts indicate future growth, with an anticipated increase of 25% by 2041 (to approximately 428 children). Meanwhile the 5-12 cohort currently amounts to 540. Recent growth has been driven by high birth rates observed in the area, with approximately 14.1 births per 1,000 residents recorded over the latest two-year period analysed which ranks the area among the top 20% of areas assessed nationally. This rate has slowed down slightly in recent years however.