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New South Wales · Postcode 2519
Mount Ousley postcode and suburb data
New South Wales · Phone area code 02 · 66 km from Sydney
Suburb snapshot
Mount Ousley at a glance vs NSW
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against NSW
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Mount Ousley ranks: household income is in the top 25% of NSW suburbs; SEIFA decile 10 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Mount Ousley vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | Mount Ousley | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,293 +NSW | $1,931 | $1,836 |
| Rent/wk | $500 +NSW | $445 | $390 |
| Mortgage/month | $2,450 ≈NSW | $2,247 | $1,958 |
| Median age | 42 | 45.0 | 45.0 |
| SEIFA decile | 10/10 +NSW | 6.0/10 | 6.0/10 |
| Unemployment | 3.6% -NSW | 5.0% | 5.0% |
Green pill = at least 10% above the NSW average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Mount Ousley is a coastal suburb of Sydney in New South Wales, with postcode 2519. It sits about 66 km from the Sydney CBD, within the Wollongong local government area. The suburb footprint covers roughly 0.8 square kilometres.
According to the 2021 Census, Mount Ousley has a population of 1,611 with a median age of 42. The median weekly household income is $2,293, above the NSW average. The unemployment rate is 3.6%, lower than the NSW average. The Indigenous population is 33 (2.0% of residents).
Housing in Mount Ousley includes a median weekly rent of $500, median monthly mortgage repayment of $2,450, with 575 total dwellings. These housing costs sit above the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 85.3% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Mount Ousley scores in decile 10 out of 10, which is well above the national average.
Mount Ousley is served by Elonera Montessori School.
Mount Ousley is part of the Wollongong statistical area in New South Wales.
Mount Ousley details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2519 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 1,611 |
| Median Age | 42 years |
| Median Household Income (Census 2021) | $2,293/week |
| Median Personal Income (Census 2021) | $832/week |
| Median Weekly Rent (Census 2021) | $500 |
| Median Monthly Mortgage (Census 2021) | $2,450 |
| Average Household Size | 2.8 persons |
| Area | 0.8 km² |
| Population Density | 2015/km² |
| Total Dwellings | 575 |
| Australian Citizens | 92.4% |
| Indigenous Population | 33 (2.0%) |
| Unemployment Rate | 3.6% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -34.4003381 |
| Longitude | 150.8805633 |
| Distance from Sydney | 66 km |
| Region (SA4) | Illawarra |
| Area (SA3) | Wollongong |
| Local Government | Wollongong |
| Federal Electorate | Cunningham |
| State Electorate | Wollongong |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 287 (17.8%) |
| 15–24 years | 221 (13.7%) |
| 25–44 years | 356 (22.1%) |
| 45–64 years | 435 (27.0%) |
| 65+ years | 310 (19.2%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 160 (9.9%) |
| Asthma | 125 (7.8%) |
| Diabetes | 74 (4.6%) |
| Heart Disease | 69 (4.3%) |
| Cancer | 54 (3.4%) |
| Lung Condition | 26 (1.6%) |
| Dementia | 7 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 22 (3.8%) |
| 1 vehicle | 171 (29.8%) |
| 2 vehicles | 257 (44.9%) |
| 3+ vehicles | 123 (21.5%) |
Schools in Mount Ousley
ACARA 2025 school profiles for schools located in Mount Ousley. ICSEA is shown where ACARA publishes it.
Suburbs Near Mount Ousley
Same Postcode (2519)
More Mount Ousley Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.