Mittagong (NSW)

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Based on analysis of ABS population updates for the broader area, and new addresses validated by Districts since the Census the suburb of Mittagong has an estimated residency of about 6,411 as of May 2026. This represents a growth of 321 people (5.3%) from the 2021 Census, which counted 6,090 individuals. The variation is calculated from the resident population of 6,380, estimated by Districts using the June 2025 ERP data release from the ABS alongside an extra 127 validated new addresses registered since the Census date. With this population level, the density ratio sits at 109 persons per square kilometer, indicating plenty of room per resident and capacity for additional expansion. The suburb of Mittagong recorded 5.3% growth since the 2021 census, outpacing the SA3 area (2.6%) and the SA4 region to lead regional growth. This expansion was mostly fueled by overseas migration, which accounted for roughly 62.0% of the overall population rise during recent timeframes, though natural growth and interstate migration also contributed positive numbers.

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Mittagong features a highly educated workforce, strong representation in essential service sectors, an unemployment rate of only 2.0%, and stable employment patterns over the past year, according to Districts compilations of statistical area data. As of March 2026, 3,002 residents are employed, and the unemployment rate is 2.1% lower than the Regional NSW rate of 4.1%, while workforce participation is slightly low at 57.0% compared to 60.6% in Regional NSW. Census statistics indicate that a high 26.6% of residents worked from home, though this may reflect COVID-19 lockdown restrictions.

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The latest postcode level ATO statistics from Districts for financial year 2023 show that incomes in the suburb of Mittagong are exceptionally high on a national scale, with the median recorded at $49,178 and the average at $110,374. This compares to a median of $52,390 and an average of $65,215 in Regional NSW. Adjusted for Wage Price Index growth of 10.32% since financial year 2023, current estimates stand at approximately $54,253 for the median and $121,765 for the average as of March 2026. Census figures show household, family, and personal incomes all rank modestly in Mittagong, placing between the 30th and 38th percentiles. Income distribution shows 27.1% of the population (1,737 individuals) are in the $1,500 - 2,999 range, which is similar to the broader region where 29.9% are in this bracket. Housing affordability pressure is high, with only of income remaining after housing costs, ranking in the th percentile, while the SEIFA income index places the area in the th decile.

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Residential structures in Mittagong at the time of the latest Census consisted of 84.0% separate houses and 16.0% other options (semi-detached properties, apartments, and alternative dwellings), compared to 82.6% separate houses and 17.4% other options in Regional NSW. Outright home ownership in Mittagong was significantly higher than the Regional NSW average at 43.9%, while the remaining properties were either mortgaged (27.0%) or rented (29.1%). The median monthly mortgage payment was notably higher than the Regional NSW average of $1,733 at $2,037, and the median weekly rent was $400 compared to $330 in Regional NSW. Nationally, Mittagong mortgage costs exceed the Australian average of $1,863, and rent exceeds the national figure of $375.

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Families make up the majority of households at 64.7%, consisting of 22.7% couples with children, 31.5% couples without children, and 9.8% single parent households. The remaining 35.3% are non-family households, with single person households accounting for 32.3% and group households making up 3.0% of the total. The median household occupancy of 2.2 people is below the Regional NSW average of 2.4.

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Educational qualifications in Mittagong are significantly higher than regional averages, with 33.4% of residents aged 15+ holding a university degree, compared to 21.3% in Rest of NSW and 22.4% in the SA4 region. This education gap prepares the area well for knowledge-intensive industries. Bachelor degrees are the most common at 22.1%, followed by postgraduate degrees (8.4%) and graduate diplomas (2.9%). Technical and vocational skills are also prominent, with 33.2% of residents aged 15+ holding vocational qualifications, including advanced diplomas (11.5%) and certificates (21.7%).

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Public transit analysis indicates there are 121 active transport stops in Mittagong, including both bus and train services. These stops are served by 46 distinct routes, which provide 2,438 passenger trips each week. Transit access is rated as excellent, with residents living an average of 158 meters from their nearest stop. Because the area is mostly residential, most workers commute out of the suburb, with private cars remaining the primary mode of travel at 91% and walking at 6%. Average vehicle ownership is 1.3 per household, which is below the regional average. A high 26.6% of residents work from home (based on 2021 Census data, which may reflect pandemic conditions).

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Health indicators in Mittagong align closely with national averages based on Districts assessments of mortality rates and chronic illness, with typical rates of common medical conditions across both younger and older demographics, while private health insurance coverage is exceptionally high at roughly 70% of the population (4,513 people). This is significantly higher than the 51.9% recorded in Regional NSW and the national average of 55.7%.

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Mittagong shows higher than average cultural diversity, with 10.9% of residents speaking a non-English language at home and 22.6% born outside Australia. Christianity is the primary religion, followed by 53.1% of the population. The most prominent religious overrepresentation is Judaism, which accounts for 0.3% of residents compared to 0.1% across Regional NSW.

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The median age of 48 years in Mittagong is older than the Regional NSW median of 43 and higher than the Australian median of 38. The age distribution shows a high proportion of people aged 75 - 84 (10.8%), while the 25 - 34 age bracket is relatively small (9.0%) compared to Regional NSW. Post-2021 Census data shows the 5 to 14 age group increased from 10.0% to 11.3% of the population, and the 35 to 44 cohort rose from 10.4% to 11.7%. Meanwhile, the 45 to 54 cohort fell from 12.6% to 11.4% and the 25 to group declined from to . Demographic projections suggest the age profile will change by with the to cohort expected to grow by people () from to .

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Mittagong currently has an estimated 294 children under 5 years old, comprising approximately 226 children aged 0-2 and 151 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 52% by 2041 (to approximately 446 children). Meanwhile the 5-12 cohort currently amounts to 619. Birth rates in the area have averaged 10.8 per 1,000 residents over the latest two-year period, a moderate rate (within the middle tier nationally).