Mount Gambier - West

An assessment of population growth drivers in Mount Gambier - West reveals an overall ranking slightly below national averages considering recent, and medium term trends

Mount Gambier - West's population was around 15,464 as of May 2026, according to AreaSearch's analysis. This reflected an increase of 965 people (6.7%) since the 2021 Census, which reported a population of 14,499. The change was inferred from the estimated resident population of 15,284 in June 2025 and an additional 314 validated new addresses since the Census date. This level of population equated to a density ratio of 122 persons per square kilometer. Mount Gambier - West's growth exceeded that of the SA3 area (4.9%) and the Rest of SA, making it a growth leader in the region. Overseas migration contributed approximately 81.0% of overall population gains during recent periods.

AreaSearch adopted ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year. For areas not covered and years post-2032, SA State Government's Regional/LGA projections by age category were used, released in 2023 based on 2021 data. Projected demographic shifts indicated a population increase just below the median of regional areas nationally by 2041, with Mount Gambier - West expected to grow by 1,675 persons, reflecting a gain of 9.7% in total over the 16 years.

Recent residential development output has been above average within Mount Gambier - West when compared nationally

Mount Gambier West has seen approximately 90 new homes approved annually over the past five financial years. Specifically, from FY21 to FY25452 homes were approved, with an additional 89 approved in FY26 as of current figures. Each year, on average, around 1.3 new residents have arrived per newly approved home during this period.

This has resulted in a balanced supply and demand scenario, maintaining stable market conditions, while the average construction cost for these homes is $281,000. In terms of commercial activity, Mount Gambier West has registered $80.5 million in approvals for this financial year alone. Compared to the rest of South Australia, Mount Gambier West has seen slightly more development, with a 23.0% increase above the regional average per person over the past five years.

This has provided reasonable buyer options while sustaining existing property demand. Recent construction trends show that 97.0% of approved dwellings are detached houses, with only 3.0% being townhouses or apartments. This preserves the area's low-density nature and caters to space-seeking buyers who prefer detached housing. Interestingly, developers are building more traditional houses than the current mix suggests, indicating strong demand for family homes despite density pressures. The population growth rate is approximately 217 people per dwelling approval in Mount Gambier West, indicating room for further growth. According to AreaSearch's latest quarterly estimate, the area is projected to add 1,495 residents by 2041. Given current development patterns, new housing supply should readily meet demand, offering good conditions for buyers and potentially facilitating population growth beyond current projections.

Mount Gambier - West has limited levels of nearby infrastructure activity, ranking in the 7thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified 22 projects likely influencing the area. Notable ones are Limestone Estate Residential Development, CBD Master Planning and Activation, Road Infrastructure Reconstruction Program, and Blue Lake Sports Park Master Plan Implementation. The following list details those most relevant.

Professional plan users can use the search below to filter and access additional projects.

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Mount Gambier - West has seen below average employment performance when compared to national benchmarks

Mount Gambier - West has a balanced workforce with both white and blue collar jobs. The unemployment rate is 4.5% and there was an estimated employment growth of 1.8% in the past year. As of December 2025, 7,674 residents are employed, with an unemployment rate of 1.2% below Regional SA's rate of 5.7%.

Workforce participation is high at 63.5%, compared to Regional SA's 58.3%. Only 5.0% of residents work from home, though Covid-19 lockdown impacts may have influenced this figure. Key industries of employment are health care & social assistance, retail trade, and manufacturing. The area specializes in health care & social assistance, with an employment share 1.2 times the regional level.

However, agriculture, forestry & fishing is under-represented at 7.4% compared to Regional SA's 14.5%. Some residents commute elsewhere for work based on Census data. Between December 2024 and 2025, employment levels increased by 1.8%, labour force grew by 3.7%, resulting in an unemployment rise of 1.7 percentage points. In comparison, Regional SA recorded employment growth of 0.7%, labour force growth of 3.1%, with unemployment rising by 2.2 percentage points. National employment forecasts from Jobs and Skills Australia suggest that Mount Gambier - West's employment should increase by 5.9% over five years and 12.7% over ten years, based on industry-specific projections applied to the local employment mix.

Income figures position the area below 75% of locations analysed nationally by AreaSearch

AreaSearch's latest postcode level ATO data for financial year 2023 shows that Mount Gambier - West SA2 has lower incomes compared to the national average. The median income is $50,933 and the average income stands at $58,818. Regional SA's figures are a median income of $48,920 and an average income of $58,933. Based on Wage Price Index growth of 10.17% since financial year 2023, current estimates for Mount Gambier - West would be approximately $56,113 (median) and $64,800 (average) as of March 2026. Census data reveals that incomes in Mount Gambier - West fall between the 14th and 26th percentiles nationally. Specifically, 29.7% of the population (4,592 individuals) earn within the $1,500 - 2,999 income range, similar to metropolitan regions at 27.5%. Housing costs are modest with 86.8% of income retained, but total disposable income ranks at just the 17th percentile nationally.

Mount Gambier - West is characterized by a predominantly suburban housing profile, with a higher proportion of rental properties than the broader region

Mount Gambier - West's dwelling structures, as per the latest Census, comprised 75.0% houses and 25.0% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Regional SA's 88.5% houses and 11.5% other dwellings. Home ownership in Mount Gambier - West was 32.7%, with mortgaged dwellings at 34.1% and rented ones at 33.2%. The median monthly mortgage repayment in the area was $1,109, lower than Regional SA's average of $1,153. The median weekly rent figure was recorded at $220, matching Regional SA's figure but significantly lower than the national average of $375. Nationally, Mount Gambier - West's mortgage repayments were notably lower than the Australian average of $1,863.

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

Family households make up 62.9% of all households, consisting of 23.4% couples with children, 27.2% couples without children, and 11.3% single parent families. Non-family households constitute the remaining 37.1%, with lone person households at 35.1% and group households comprising 2.1% of the total. The median household size is 2.2 people, which is smaller than the Regional SA average of 2.3.

Mount Gambier - West faces educational challenges, with performance metrics placing it in the bottom quartile of areas assessed nationally

The area's university qualification rate is 13.8%, significantly lower than Australia's average of 30.4%. This disparity presents both challenges and opportunities for targeted educational initiatives. Bachelor degrees are the most common at 10.0%, followed by postgraduate qualifications (2.0%) and graduate diplomas (1.8%). Vocational credentials are prevalent, with 38.3% of residents aged 15+ holding them, including advanced diplomas (7.8%) and certificates (30.5%).

Educational participation is high, with 26.6% currently enrolled in formal education. This includes 11.0% in primary education, 7.4% in secondary education, and 2.4% pursuing tertiary education.

No public transport data available for this catchment area.

Health performance in Mount Gambier - West is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts

Mount Gambier's West faces significant health challenges based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are high, with common health conditions prevalent across younger and older age cohorts.

Private health cover is low at approximately 48% of the total population (~7,484 people), compared to the national average of 55.7%. Mental health issues impact 9.5% of residents, while arthritis affects 9.4%. 63.1% of residents declare themselves completely clear of medical ailments, similar to the 62.5% across Regional SA. The working-age population faces notable health challenges due to elevated chronic condition rates. The area has 23.8% of residents aged 65 and over (3,674 people), lower than the 27.1% in Regional SA. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.

Mount Gambier - West ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Mount Gambier-West had a cultural diversity below average, with 90.2% of its population being citizens born in Australia who spoke English only at home. Christianity was the predominant religion, comprising 41.9%. The 'Other' category was slightly overrepresented at 0.9%, compared to Regional SA's 0.8%.

In terms of ancestry, Australian (32.1%), English (31.1%), and Scottish (7.7%) were the top groups. Notably, German (6.0% vs regional 8.2%), Dutch (2.0% vs 1.3%), and Australian Aboriginal (2.0% vs 3.3%) were overrepresented.

Mount Gambier - West's population is slightly older than the national pattern

Mount Gambier West has a median age of 41 years, which is lower than Regional South Australia's median age of 47 but higher than the national norm of 38. Between 2021 and present, the percentage of people aged 75 to 84 has increased from 7.4% to 8.7%, while those aged 35 to 44 have risen from 11.1% to 12.4%. Conversely, the percentage of people aged 45 to 54 has decreased from 11.9% to 10.7%. By 2041, demographic modeling projects significant changes in Mount Gambier West's age profile. The 75 to 84 age group is expected to expand by 569 people (42%), growing from 1,346 to 1,916. Notably, the combined age groups of 65 and above will account for 73% of total population growth, reflecting the area's aging demographic trend. In contrast, population declines are projected for the 0 to 4 and 35 to 44 age cohorts.