Northern Territory · Postcode 0850
Cossack postcode and suburb data
Northern Territory · Phone area code 08 · 270 km from Darwin
Suburb snapshot
Cossack at a glance vs NT
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against NT
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Cossack ranks: household income is in the top 25% of NT suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Cossack vs the NT average and the national average, using population-weighted 2021 Census data.
| Metric | Cossack | NT avg | AU avg |
|---|---|---|---|
| Household income/wk | $2,257 +NT | $2,022 | $1,836 |
| Rent/wk | $250 -NT | $309 | $390 |
| Mortgage/month | $2,000 +NT | $1,631 | $1,958 |
| Median age | 39 | 33.0 | 45.0 |
| SEIFA decile | 5/10 +NT | 3.0/10 | 6.0/10 |
| Unemployment | 4.4% -NT | 7.0% | 5.0% |
Green pill = at least 10% above the NT average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Cossack is a very remote community in Northern Territory, with postcode 0850. It lies roughly 270 km from Darwin, classified by the ABS as very remote Australia. The area is administered by Katherine.
According to the 2021 Census, Cossack has a population of 1,293 with a median age of 39. The median weekly household income is $2,257, above the NT average. The unemployment rate is 4.4%, lower than the NT average. The Indigenous population is 269 (20.8% of residents).
Housing in Cossack includes a median weekly rent of $250, median monthly mortgage repayment of $2,000, with 382 total dwellings. These housing costs sit above the NT average. Owner-occupied dwellings (owned or mortgaged) make up 73.2% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Cossack scores in decile 5 out of 10, which is around the national average.
Cossack is part of the Katherine statistical area in Northern Territory.
Cossack details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 0850 |
| State | Northern Territory (NT) |
| Phone Area Code | 08 |
| Population (2021) | 1,293 |
| Median Age | 39 years |
| Median Household Income (Census 2021) | $2,257/week |
| Median Personal Income (Census 2021) | $1,077/week |
| Median Weekly Rent (Census 2021) | $250 |
| Median Monthly Mortgage (Census 2021) | $2,000 |
| Average Household Size | 2.8 persons |
| Area | 257.0 km² |
| Population Density | 5/km² |
| Total Dwellings | 382 |
| Australian Citizens | 80.9% |
| Indigenous Population | 269 (20.8%) |
| Unemployment Rate | 4.4% |
| SEIFA IRSAD Decile | 5/10 (average) |
| Latitude | -14.5052 |
| Longitude | 132.193 |
| Distance from Darwin | 270 km |
| Region (SA4) | Northern Territory - Outback |
| Area (SA3) | Katherine |
| Local Government | Katherine |
| State Electorate | Katherine |
| Time Zone | ACST (UTC+9:30), Australia/Darwin (standard time) |
Age Profile
Show counts
| 0–14 years | 268 (20.7%) |
| 15–24 years | 144 (11.1%) |
| 25–44 years | 324 (25.1%) |
| 45–64 years | 375 (29.0%) |
| 65+ years | 173 (13.4%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 69 (5.3%) |
| Diabetes | 66 (5.1%) |
| Heart Disease | 56 (4.3%) |
| Arthritis | 55 (4.3%) |
| Lung Condition | 31 (2.4%) |
| Cancer | 26 (2.0%) |
| Dementia | 3 (0.2%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 24 (6.6%) |
| 1 vehicle | 82 (22.7%) |
| 2 vehicles | 117 (32.4%) |
| 3+ vehicles | 138 (38.2%) |
Suburbs Near Cossack
Same Postcode (0850)
More Cossack 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.