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New South Wales · Postcode 2285
Cardiff Heights postcode and suburb data
New South Wales · Phone area code 02 · 112 km from Sydney
Suburb snapshot
Cardiff Heights 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 Cardiff Heights ranks: SEIFA decile 9 puts it in the top 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Cardiff Heights vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | Cardiff Heights | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $1,850 ≈NSW | $1,931 | $1,836 |
| Rent/wk | $380 -NSW | $445 | $390 |
| Mortgage/month | $2,050 ≈NSW | $2,247 | $1,958 |
| Median age | 44 | 45.0 | 45.0 |
| SEIFA decile | 9/10 +NSW | 6.0/10 | 6.0/10 |
| Unemployment | 2.3% -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.
Postcode 2285 covers Cardiff Heights, an inland suburb of Sydney about 112 km from the city centre. It forms part of the Newcastle and Lake Macquarie region of New South Wales. Local government services are provided by Lake Macquarie.
According to the 2021 Census, Cardiff Heights has a population of 1,384 with a median age of 44. The median weekly household income is $1,850, close to the NSW average. The unemployment rate is 2.3%, lower than the NSW average. The Indigenous population is 34 (2.5% of residents).
Housing in Cardiff Heights includes a median weekly rent of $380, median monthly mortgage repayment of $2,050, with 530 total dwellings. Housing costs in the area sit below the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 83.5% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Cardiff Heights scores in decile 9 out of 10, which is well above the national average.
Cardiff Heights is part of the Newcastle statistical area in New South Wales.
Cardiff Heights details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2285 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 1,384 |
| Median Age | 44 years |
| Median Household Income (Census 2021) | $1,850/week |
| Median Personal Income (Census 2021) | $808/week |
| Median Weekly Rent (Census 2021) | $380 |
| Median Monthly Mortgage (Census 2021) | $2,050 |
| Average Household Size | 2.4 persons |
| Area | 1.2 km² |
| Population Density | 1111/km² |
| Total Dwellings | 530 |
| Australian Citizens | 92.4% |
| Indigenous Population | 34 (2.5%) |
| Unemployment Rate | 2.3% |
| SEIFA IRSAD Decile | 9/10 (well above average) |
| Latitude | -32.9367129 |
| Longitude | 151.6757222 |
| Distance from Sydney | 112 km |
| Region (SA4) | Newcastle and Lake Macquarie |
| Area (SA3) | Newcastle |
| Local Government | Lake Macquarie |
| Federal Electorate | Hunter |
| State Electorate | Wallsend |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 234 (16.9%) |
| 15–24 years | 155 (11.2%) |
| 25–44 years | 318 (23.0%) |
| 45–64 years | 338 (24.4%) |
| 65+ years | 342 (24.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 186 (13.4%) |
| Asthma | 116 (8.4%) |
| Heart Disease | 97 (7.0%) |
| Diabetes | 89 (6.4%) |
| Cancer | 55 (4.0%) |
| Dementia | 43 (3.1%) |
| Lung Condition | 31 (2.2%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 47 (8.9%) |
| 1 vehicle | 162 (30.8%) |
| 2 vehicles | 210 (39.9%) |
| 3+ vehicles | 107 (20.3%) |
Suburbs Near Cardiff Heights
Same Postcode (2285)
More Cardiff Heights 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.