Seaham Postcode
New South Wales
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Seaham Compares
Seaham vs the NSW average and the national average (2021 Census, population-weighted).
| Metric | Seaham | NSW avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,312 +NSW | $1,931 | $1,836 |
| Rent/wk | $360 -NSW | $445 | $390 |
| Mortgage/month | $2,149 ≈NSW | $2,247 | $1,958 |
| Median age | 41 | 45.0 | 45.0 |
| SEIFA decile | 7/10 ≈NSW | 6.0/10 | 6.0/10 |
| Unemployment | 3.8% -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.
Seaham is a locality 142 km from Sydney in New South Wales, classified as inner regional by the ABS. The postcode is 2324. It falls within the Mid North Coast region. The local government area is Port Stephens.
According to the 2021 Census, Seaham has a population of 1,011 with a median age of 41. The median weekly household income is $2,312, above the NSW average. The unemployment rate is 3.8%, lower than the NSW average. The Indigenous population is 44 (4.4% of residents).
Housing in Seaham includes a median weekly rent of $360, median monthly mortgage repayment of $2,149, with 329 total dwellings. Housing costs in the area sit below the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 92.7% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Seaham scores in decile 7 out of 10, which is above the national average.
Seaham is served by Seaham Public School.
Seaham is part of the Great Lakes statistical area in New South Wales.
Seaham Details
| Postcode | 2324 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 1,011 |
| Median Age | 41 years |
| Median Household Income (Census 2021) | $2,312/week |
| Median Personal Income (Census 2021) | $839/week |
| Median Weekly Rent (Census 2021) | $360 |
| Median Monthly Mortgage (Census 2021) | $2,149 |
| Average Household Size | 3.1 persons |
| Area | 38.6 km² |
| Population Density | 26/km² |
| Total Dwellings | 329 |
| Australian Citizens | 96.5% |
| Indigenous Population | 44 (4.4%) |
| Unemployment Rate | 3.8% |
| SEIFA IRSAD Decile | 7/10 (above average) |
| Latitude | -32.665 |
| Longitude | 151.717778 |
| Distance from Sydney | 142 km |
| Region (SA4) | Mid North Coast |
| Area (SA3) | Great Lakes |
| Local Government | Port Stephens |
| Federal Electorate | Paterson |
Age Profile
Show counts
| 0–14 years | 200 (19.8%) |
| 15–24 years | 156 (15.4%) |
| 25–44 years | 182 (18.0%) |
| 45–64 years | 334 (33.0%) |
| 65+ years | 136 (13.5%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 7 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 100 (9.9%) |
| Asthma | 92 (9.1%) |
| Heart Disease | 43 (4.3%) |
| Diabetes | 38 (3.8%) |
| Cancer | 36 (3.6%) |
| Lung Condition | 18 (1.8%) |
| Dementia | 6 (0.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 44 (13.7%) |
| 2 vehicles | 138 (43.0%) |
| 3+ vehicles | 139 (43.3%) |
Schools in Seaham
Suburbs Near Seaham
Same Postcode (2324)
More Seaham 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.