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

As of November 2025, Mannum's population is estimated at around 2,952 people. This reflects an increase from the 2021 Census figure of 2,919 people, a rise of 33 individuals (1.1%). The change is inferred from AreaSearch's resident population estimate of 2,929 following examination of ABS' latest ERP data release in June 2024 and an additional 36 validated new addresses since the Census date. This results in a population density ratio of 11.5 persons per square kilometer. Over the past decade (2012-2022), Mannum has demonstrated resilient growth patterns with a compound annual growth rate of 1.4%, outpacing its SA3 area. Interstate migration contributed approximately 82.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, released in 2024 using 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 with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Considering projected demographic shifts, Mannum is expected to increase by 152 persons to reach approximately 3,104 people by 2041, reflecting an increase of 10.5% in total over the 17-year period.

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

AreaSearch analysis of ABS building approval numbers shows Mannum recorded approximately 23 residential properties approved annually. From FY-21 to FY-25, around 116 homes were approved, with another 9 approved in FY-26 so far. On average, about 1.7 new residents arrived per new home over the past five financial years.

The average construction value of new homes was $415,000. This year, Mannum has seen $678,000 in commercial approvals, indicating a primarily residential focus. Compared to Rest of SA, Mannum exhibited moderately higher construction activity, with 33.0% above the regional average per person over the past five years.

Recent construction comprised 96.0% detached houses and 4.0% attached dwellings, maintaining the area's low-density character. With around 123 people per dwelling approval, Mannum displays characteristics of a low-density area. According to AreaSearch's latest quarterly estimate, Mannum is projected to add approximately 310 residents by 2041. At current development rates, new housing supply should comfortably meet demand, providing favourable conditions for buyers and potentially supporting population growth beyond current projections.

Mannum has emerging levels of nearby infrastructure activity, ranking in the 38thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified two projects that could affect this region: Mannum Waters Residential Marina in Mannum, South Australia, and the Regional North-South Freight Route Upgrade. Other notable projects include SA Water Capital Work Delivery Contracts and SA Public Housing Maintenance and Services Contracts. The following details those most relevant to the area.

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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. As of June 2025, the unemployment rate is 5.6%.

The area has 1,079 residents employed, an unemployment rate of 5.6%, which is 1.0% higher than Rest of SA's rate of 4.6%. Workforce participation in Mannum is 40.3%, significantly lower than Rest of SA's 54.1%. Employment is concentrated in health care & social assistance, retail trade, and construction. Health care & social assistance has particularly high representation, at 1.3 times the regional average.

Conversely, agriculture, forestry & fishing shows lower representation at 8.0% compared to the regional average of 14.5%. Over the year ending June 2025, labour force levels decreased by 2.3%, and employment declined by 4.4%, raising the unemployment rate by 2.1 percentage points. In contrast, Rest of SA saw employment fall by 1.2% while labour force expanded by 0.1%, leading to a 1.2 percentage point rise in unemployment. National employment forecasts from Jobs and Skills Australia (Sep-22) project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Mannum's industry 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 and does not account for localized population projections.

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

AreaSearch's latest postcode level ATO data released for financial year 2022 shows Mannum's median income among taxpayers is $38,007. The average income in Mannum for the same period is $46,205. Both figures are below the national average. In comparison, Rest of SA has a median income of $46,889 and an average of $56,582. Based on Wage Price Index growth of 12.83% since financial year 2022, current estimates for Mannum's median income would be approximately $42,883 as of September 2025. The estimated average income in Mannum by that date is $52,133. Census data reveals household, family and personal incomes in Mannum all fall between the 0th and 2nd percentiles nationally. The largest segment comprises 38.3% earning $400 - $799 weekly (1,130 residents). Unlike trends in the region where 27.5% fall within the $1,500 - $2,999 range, lower income households are notably prevalent in Mannum, with 48.6% earning below $800 weekly. This indicates 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 evaluation, 92.2% of dwellings were houses, with the remaining 7.8% comprising semi-detached homes, apartments, and other types. This is compared to Non-Metro SA's 89.9% houses and 10.1% other dwellings. Home ownership in Mannum stood at 47.3%, with mortgaged properties at 26.2% and rented ones at 26.5%. The median monthly mortgage repayment was $1,100, exceeding the Non-Metro SA average of $1,083. The median weekly rent in Mannum was $220, aligning with the Non-Metro SA figure but significantly lower than the national average of $375. Nationally, Mannum's mortgage repayments were notably lower than the Australian 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, which is 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 presents both a challenge and an opportunity for targeted educational initiatives. Bachelor degrees are most common 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, 6.2% in secondary, and 2.1% in tertiary education. Mannum Community College serves Mannum, with an enrollment of 412 students as of a recent report. The area's educational conditions are varied (ICSEA: 937). All 1 schools offer integrated K-12 education, providing continuity throughout students' academic journey.

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%, covering around 1,338 people, compared to the national average of 55.3%.

The most prevalent medical conditions are arthritis (13%) and mental health issues (10.1%), while 55.2% report no medical ailments, lower than the Rest of SA's 61.8%. Mannum has a higher proportion of seniors aged 65 and over at 38.1%, or 1,124 people, compared to Rest of SA's 26.2%. Despite this, health outcomes among seniors are challenging but better than the general population in 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, accounting for 46.4% of Mannum's population. Notably, Judaism, at 0.2%, was overrepresented compared to the Rest of SA's 0.1%.

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 (1.4% vs regional 1.1%), Welsh (0.5% vs 0.4%), and Polish (0.6% vs 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 of 38. The age profile shows that those aged 65-74 are particularly prominent at 19.8%, while the 35-44 group is smaller at 7.2% compared to Rest of SA. This concentration of 65-74 year-olds is higher than the national average of 9.4%. Between 2021 and now, the 75-84 age group has grown from 12.1% to 13.9% of Mannum's population, while 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 195 people (150%) from 129 to 325. Senior residents aged 65 and above will drive 97% of population growth, reflecting demographic aging trends. Conversely, population declines are projected for the 45-54 and 0-4 age cohorts.