Mannum

Population growth drivers in Mannum are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, Mannum's population is estimated at around 3,140 as of November 2025. This reflects an increase of 221 people (7.6%) since the 2021 Census, which reported a population of 2,919 people. The change is inferred from the resident population of 2,962 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 36 validated new addresses since the Census date. This level of population equates to a density ratio of 12.2 persons per square kilometer. Mannum's growth of 7.6% since the 2021 census exceeded the SA3 area (7.2%) and the non-metro area, marking it as a growth leader in the region. Population growth for the area was primarily driven by interstate migration that contributed approximately 82.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For areas not covered by this data and years post-2032, the SA State Government's Regional/LGA projections by age category are adopted, released in 2023 based on 2021 data, with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Moving forward with demographic trends, a population increase just below the median of regional areas across the nation is expected for Mannum (SA2), with an estimated growth of 150 persons to reach approximately 3,290 by 2041 based on aggregated SA2-level projections, reflecting a gain of 3.8% in total over the 17 years.

Recent residential development output has been above average within Mannum when compared nationally

AreaSearch analysis of ABS building approval numbers indicates Mannum has averaged around 31 new homes approved annually. From FY-21 to FY-25, approximately 159 homes were approved, with 19 more approved in FY-26 so far. Over the past five financial years, about 1.2 people have moved to the area for each dwelling built.

This suggests a balanced supply and demand, stable market conditions, and an average construction value of $415,000, indicating developers' focus on premium properties. In FY-26, commercial approvals totaled $292,000, reflecting Mannum's predominantly residential focus. Compared to the Rest of SA, Mannum has 81.0% more building activity per person, providing buyers with greater choice. Recent building activity consists solely of detached dwellings, maintaining Mannum's traditional low-density character and appealing to those seeking family homes and space.

With around 60 people per dwelling approval, Mannum exhibits growth area characteristics. AreaSearch's latest quarterly estimate projects Mannum will gain 120 residents by 2041. Given current development patterns, new housing supply should meet demand, offering favorable conditions for buyers and potentially facilitating population growth beyond projections.

Mannum has emerging levels of nearby infrastructure activity, ranking in the 36thth percentile nationally

"Changes in local infrastructure significantly impact an area's performance. AreaSearch has identified two projects likely affecting this region: Mannum Waters Residential Marina in Mannum, South Australia, and Regional North-South Freight Route Upgrade, also in South Australia.".

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Employment conditions in Mannum face significant challenges, ranking among the bottom 10% of areas assessed nationally

Mannum's workforce is balanced across white and blue-collar jobs, with prominent essential services sectors. The unemployment rate was 6.1% as of September 2025, according to AreaSearch data aggregation.

In Mannum, 1,112 residents were employed, with an unemployment rate of 0.7% higher than Rest of SA's rate of 5.3%. Workforce participation in Mannum was lower at 40.3%, compared to Rest of SA's 54.1%. Employment is concentrated in health care & social assistance (1.3 times the regional level), retail trade, and construction. Agriculture, forestry & fishing employs only 8.0% of local workers, below Rest of SA's 14.5%.

The area may offer limited local employment opportunities, as indicated by Census data comparison between working population and resident population. Between September 2024 and September 2025, Mannum's labour force increased by 1.6%, while employment declined by 1.0%, leading to a 2.5 percentage point rise in unemployment rate. In contrast, Rest of SA saw employment growth of 0.3% and labour force growth of 2.3%, with a 1.9 percentage point rise in unemployment rate. National employment forecasts from Jobs and Skills Australia (May-25) project national employment growth at 6.6% over five years and 13.7% over ten years. Applying these projections to Mannum's employment mix suggests local employment should increase by 6.0% over five years and 12.8% over ten years, though this is a simple extrapolation for illustrative purposes only.

Income metrics place the area in the bottom 10% of locations nationally according to AreaSearch analysis

The suburb of Mannum's income level is below the national average according to ATO data aggregated by AreaSearch for financial year 2023. The median income among taxpayers in Mannum is $38,007 and the average income stands at $46,205, compared to figures for Rest of SA of $48,920 and $58,933 respectively. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates would be approximately $41,352 (median) and $50,271 (average) as of September 2025. From the 2021 Census data, household, family and personal incomes in Mannum all fall between the 0th and 2nd percentiles nationally. The income band of $400 - 799 captures 38.3% of Mannum's community (1,202 individuals), contrasting with the surrounding region where the $1,500 - 2,999 bracket leads at 27.5%. Lower income households are notably prevalent in Mannum, with 48.6% earning below $800 weekly, indicating affordability pressures for many residents. Housing affordability pressures are severe, with only 84.8% of income remaining after housing costs, ranking at the 3rd percentile nationally.

Mannum is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

In Mannum, as per the latest Census, 92.2% of dwellings were houses with the remaining 7.8% being semi-detached, apartments, or other types. This compares to Non-Metro SA's 89.9% houses and 10.1% other dwellings. Home ownership in Mannum stood at 47.3%, with mortgaged dwellings at 26.2% and rented ones at 26.5%. The median monthly mortgage repayment was $1,100, exceeding Non-Metro SA's average of $1,083. The median weekly rent in Mannum was $220, matching Non-Metro SA's figure but significantly lower than the national average of $375. Nationally, Mannum's mortgage repayments were notably lower at $1,100 compared to Australia's average of $1,863.

Mannum features high concentrations of lone person households, with a lower-than-average median household size

Family households account for 62.8% of all households, including 14.7% couples with children, 36.2% couples without children, and 10.9% single parent families. Non-family households constitute the remaining 37.2%, with lone person households at 35.6% and group households comprising 1.7%. The median household size is 2.1 people, smaller than the Rest of SA average of 2.3.

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

The area's university qualification rate is 8.9%, significantly lower than the Australian average of 30.4%. This disparity presents both a challenge and an opportunity for targeted educational initiatives. Bachelor degrees are most prevalent at 6.4%, followed by postgraduate qualifications (1.3%) and graduate diplomas (1.2%). Trade and technical skills are prominent, with 41.9% of residents aged 15+ holding vocational credentials – advanced diplomas (9.0%) and certificates (32.9%).

A substantial 23.7% of the population is actively pursuing formal education, including 10.3% in primary education, 6.2% in secondary education, and 2.1% in tertiary education.

No public transport data available for this catchment area.

Health performance in Mannum is a key challenge with a range of health conditions having marked impacts on both younger and older age cohorts

Mannum faces significant health challenges, with various conditions affecting both younger and older residents. Private health cover is low, at approximately 45% of the total population (around 1,423 people), compared to the national average of 55.7%.

The most prevalent medical conditions are arthritis and mental health issues, affecting 13.0% and 10.1% of residents respectively. Conversely, 55.2% report no medical ailments, compared to 61.8% in the rest of South Australia. Mannum has a higher proportion of seniors aged 65 and over, at 38.1% (1,196 people), compared to 26.2% in the rest of SA. Despite this, health outcomes among seniors are challenging but perform better than the general population in certain health metrics.

The latest Census data sees Mannum placing among the least culturally diverse areas in the country when compared across a range of language and cultural background related metrics

Mannum's cultural diversity was found to be below average, with 88.4% of its population being Australian citizens, born in Australia (87.8%), and speaking English only at home (98.4%). Christianity was the predominant religion in Mannum, comprising 46.4% of its population. Notably, Judaism was overrepresented in Mannum at 0.2%, compared to 0.1% across the Rest of SA.

In terms of ancestry, the top three groups were English (34.6%), Australian (31.6%), and German (11.0%). Other ethnic groups with notable divergences included Dutch at 1.4% in Mannum versus 1.1% regionally, Welsh at 0.5% versus 0.4%, and Polish at 0.6% versus 0.5%.

Mannum ranks among the oldest 10% of areas nationwide

Mannum's median age is 56 years, which is notably higher than Rest of SA's 47 and well above Australia's median age of 38. The age profile shows that those aged 65-74 are particularly prominent, making up 19.8% of the population, while the 35-44 group is smaller at 7.1%, compared to Rest of SA. This concentration of 65-74 year-olds is higher than the national average of 9.4%. Between 2021 and present, the 75-84 age group has grown from 12.1% to 13.9% of Mannum's population. Conversely, the 45-54 cohort has declined from 11.6% to 9.4%. By 2041, demographic projections show significant shifts in Mannum's age structure. The 85+ age group is projected to grow exceptionally, increasing by 188 people (137%) from 138 to 327. Senior residents aged 65 and above will drive all population growth, indicating a trend towards demographic aging. In contrast, population declines are projected for those aged 0-4 and 15-24.