New South Wales · Postcode 2304
Sandgate postcode and suburb data
New South Wales · Phone area code 02 · 120 km from Sydney
Suburb snapshot
Sandgate 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 Sandgate ranks: household income sits in the bottom 10% of NSW suburbs; SEIFA decile 1 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Sandgate vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | Sandgate | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $687 -NSW | $1,931 | $1,836 |
| Rent/wk | $288 -NSW | $445 | $390 |
| Mortgage/month | $1,684 -NSW | $2,247 | $1,958 |
| Median age | 69 | 45.0 | 45.0 |
| SEIFA decile | 1/10 -NSW | 6.0/10 | 6.0/10 |
| Unemployment | 0.0% -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 2304 covers Sandgate, an inland suburb of Sydney about 120 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 Newcastle.
According to the 2021 Census, Sandgate has a population of 276 with a median age of 69. The median weekly household income is $687, below the NSW average. The Indigenous population is 16 (5.8% of residents).
Housing in Sandgate includes a median weekly rent of $288, median monthly mortgage repayment of $1,684, with 75 total dwellings. Housing costs in the area sit below the NSW average. Rental properties account for 46.7% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Sandgate scores in decile 1 out of 10, which is well below the national average.
Sandgate is part of the Newcastle statistical area in New South Wales.
Sandgate details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2304 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 276 |
| Median Age | 69 years |
| Median Household Income (Census 2021) | $687/week |
| Median Personal Income (Census 2021) | $541/week |
| Median Weekly Rent (Census 2021) | $288 |
| Median Monthly Mortgage (Census 2021) | $1,684 |
| Average Household Size | 2 persons |
| Area | 2.3 km² |
| Population Density | 119/km² |
| Total Dwellings | 75 |
| Australian Citizens | 50.4% |
| Indigenous Population | 16 (5.8%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 1/10 (well below average) |
| Latitude | -32.867778 |
| Longitude | 151.706111 |
| Distance from Sydney | 120 km |
| Region (SA4) | Newcastle and Lake Macquarie |
| Area (SA3) | Newcastle |
| Local Government | Newcastle |
| Federal Electorate | Newcastle |
| State Electorate | Wallsend |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 27 (9.8%) |
| 15–24 years | 9 (3.3%) |
| 25–44 years | 50 (18.1%) |
| 45–64 years | 39 (14.1%) |
| 65+ years | 148 (53.6%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 31 (11.2%) |
| Asthma | 27 (9.8%) |
| Lung Condition | 13 (4.7%) |
| Heart Disease | 11 (4.0%) |
| Diabetes | 10 (3.6%) |
| Cancer | 8 (2.9%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 11 (16.7%) |
| 1 vehicle | 31 (47.0%) |
| 2 vehicles | 15 (22.7%) |
| 3+ vehicles | 9 (13.6%) |
Suburbs Near Sandgate
Same Postcode (2304)
More Sandgate 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.