Peterborough (SA)

Peterborough has shown very soft population growth performance across periods assessed by AreaSearch

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch since the Census, Peterborough's population is estimated at around 1,578 as of Feb 2026. This reflects an increase of 88 people (5.9%) since the 2021 Census which reported a population of 1,490 people. The change is inferred from the resident population of 1,496 estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 45 validated new addresses since the Census date. This level of population equates to a density ratio of 42 persons per square kilometer. Peterborough's growth since the 2021 census exceeded the SA3 area at 4.4%, marking it as a growth leader in the region. Population growth was primarily driven by interstate migration contributing approximately 67.0% of overall population gains during recent periods.

AreaSearch is adopting 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 are adopted, based on 2021 data and adjusted using a method of weighted aggregation from LGA to SA2 levels. Projections indicate an overall population decline of 14 persons by 2041 but growth across specific age cohorts is anticipated, led by the 75 to 84 age group projected to expand by 92 people.

The level of residential development activity in Peterborough is very low in comparison to the average area assessed nationally by AreaSearch

Peterborough had minimal residential development activity with six dwelling approvals annually over the five-year period ending 2018. These low development levels reflect its rural nature, where housing needs drive development rather than broad market demand. Note that small sample sizes can significantly influence annual growth and relativity statistics.

Peterborough's development levels are substantially lower than those of Rest of SA and below national patterns. Recent building activity consists entirely of detached houses, maintaining the area's rural character with emphasis on space. The estimated population per dwelling approval is 760 people, reflecting its quiet development environment. Population projections indicate stability or decline in Peterborough, suggesting reduced housing demand pressures which may benefit potential buyers.

With population projections showing stability or decline, Peterborough should see reduced housing demand pressures, benefiting potential buyers.

Peterborough has limited levels of nearby infrastructure activity, ranking in the 11thth percentile nationally

No factors influence a region's performance more than changes to local infrastructure, major projects, and planning initiatives. AreaSearch has identified zero projects that could impact this area. Notable projects include Mid North South Australia REZ Expansion, Silver to Sea Way, SA Public Housing Maintenance and Services Contracts, and SA Water Capital Work Delivery Contracts. The following list details those most relevant:.

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

Peterborough has a balanced workforce with both white and blue collar jobs. Essential services sectors are well-represented, and the unemployment rate is 14.8%. As of September 2025464 residents are employed while the unemployment rate is 9.5% higher than the Rest of SA's rate of 5.3%.

Workforce participation lags at 41.8%, compared to the Rest of SA's 58.5%. Only 7.6% of residents work from home, considering Covid-19 impacts. Dominant employment sectors include retail trade, health care & social assistance, and education & training. Retail trade is particularly strong with an employment share 1.5 times the regional level.

Agriculture, forestry & fishing has limited presence at 9.9%, compared to the regional 14.5%. The area may have limited local employment opportunities. Between September 2024 and September 2025, the labour force decreased by 0.4% and employment fell by 5.1%, causing unemployment to rise by 3.9 percentage points. In contrast, the Rest of SA saw employment grow by 0.3% and unemployment rise by 1.9 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years. Applying these projections to Peterborough's employment mix suggests local employment could grow by 5.4% over five years and 11.8% over ten years, though this is a simplified extrapolation for illustrative purposes only.

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

AreaSearch's latest postcode level ATO data for financial year 2023 shows Peterborough's median income among taxpayers is $35,173. The average income in the suburb is $42,621. Nationally, these figures are lower than average. In Rest of SA, the median income is $48,920 and the average is $58,933. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates for Peterborough would be approximately $38,268 (median) and $46,372 (average) as of September 2025. According to census data, incomes in Peterborough fall between the 0th and 1st percentiles nationally across household, family, and personal levels. In income distribution, the $400 - 799 bracket dominates with 40.6% of residents (640 people), unlike broader area patterns where the $1,500 - 2,999 bracket is dominant at 27.5%. The prevalence of lower-income residents indicates constrained household budgets across much of the area. Housing costs are modest, with 90.2% of income retained, but total disposable income ranks at just the 2nd percentile nationally.

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

The dwelling structure in Peterborough, as per the latest Census, consisted of 95.5% houses and 4.5% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Non-Metro SA had 88.5% houses and 11.5% other dwellings. Home ownership in Peterborough stood at 52.2%, with the remaining dwellings either mortgaged (23.8%) or rented (24.0%). The median monthly mortgage repayment was $569, lower than Non-Metro SA's average of $1,153 and significantly below the national average of $1,863. The median weekly rent figure in Peterborough was recorded at $160, compared to Non-Metro SA's $220 and substantially lower than the national figure of $375.

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

Family households account for 50.5% of all households, including 9.5% couples with children, 28.2% couples without children, and 11.5% single parent families. Non-family households make up the remaining 49.5%, with lone person households at 46.9% and group households comprising 2.3%. The median household size is 1.8 people, smaller than the Rest of SA average of 2.3.

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

The area's university qualification rate is 9.1%, 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 common at 6.6%, followed by graduate diplomas (1.5%) and postgraduate qualifications (1.0%). Trade and technical skills are prevalent, with 39.0% of residents aged 15+ holding vocational credentials - advanced diplomas (8.2%) and certificates (30.8%).

Educational participation is high, with 27.3% of residents currently enrolled in formal education. This includes 13.5% in primary education, 6.7% in secondary education, and 1.2% pursuing tertiary education.

No public transport data available for this catchment area.

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

Peterborough faces significant health challenges as assessed by AreaSearch. Mortality rates and chronic condition prevalence are high across various health conditions affecting both younger and older age groups. Private health cover is low at approximately 44% of the total population (around 693 people), compared to 48.9% in the rest of South Australia and a national average of 55.7%.

The most prevalent medical conditions are arthritis, affecting 14.6% of residents, and mental health issues, impacting 11.5%. Conversely, 51.7% of residents report being completely free from medical ailments, compared to 62.5% in the rest of South Australia. Working-age individuals face notable health challenges due to elevated chronic condition rates. The area has a higher proportion of seniors aged 65 and over at 36.9% (around 582 people), compared to 27.1% in the rest of South Australia. Health outcomes among seniors present additional challenges, with national rankings even worse than those of the general population.

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

Peterborough had a lower than average cultural diversity, with 84.0% of its population being citizens, 89.0% born in Australia, and 98.1% speaking English only at home. The dominant religion was Christianity, comprising 44.7% of Peterborough's population. Notably, the 'Other' religion category had a higher representation in Peterborough at 0.7%, compared to 0.8% across the rest of South Australia.

In terms of ancestry, Australian was the most represented group at 34.4%, followed by English at 33.0%, and Irish at 6.5%. Some ethnic groups showed significant differences in representation: Polish was overrepresented at 1.1% compared to 0.4% regionally, German at 6.3% versus 8.2%, and Australian Aboriginal at 5.8% versus 3.3%.

Peterborough ranks among the oldest 10% of areas nationwide

Peterborough's median age is 55, which is significantly higher than the Rest of South Australia figure of 47 and also notably higher than the Australian median of 38. Compared to the Rest of SA, Peterborough has a higher proportion of residents aged 65-74 (21.6%) but fewer residents aged 25-34 (5.7%). This concentration of 65-74 year-olds is well above the national average of 9.5%. According to data from the 2021 Census, Peterborough's population has shifted since the previous census: the 65 to 74 age group increased from 18.8% to 21.6%, while the 75 to 84 cohort grew from 9.7% to 11.5%. Conversely, the 55 to 64 age group declined from 19.4% to 16.1%, and the 25 to 34 age group dropped from 7.7% to 5.7%. Looking forward to 2041, demographic projections indicate significant shifts in Peterborough's age structure. The 75 to 84 cohort is expected to grow by 41%, adding 73 residents and reaching a total of 255. This growth will be driven entirely by the aging population, with residents aged 65 and older representing all anticipated growth. Meanwhile, the 45 to 54 and 0 to 4 age cohorts are projected to experience population declines.