New South Wales · Postcode 2250
Calga postcode and suburb data
New South Wales · Phone area code 02 · 49 km from Sydney
Suburb snapshot
Calga 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 Calga ranks: household income is in the top 25% of NSW suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Calga vs the NSW average and the national average, using population-weighted 2021 Census data.
| Metric | Calga | NSW avg | AU avg | Greater Sydney |
|---|---|---|---|---|
| Household income/wk | $2,124 ≈NSW | $1,931 | $1,836 | $2,181 |
| Rent/wk | $350 -NSW | $445 | $390 | $506 |
| Mortgage/month | $2,485 +NSW | $2,247 | $1,958 | $2,587 |
| Median age | 43 | 45.0 | 45.0 | 39.0 |
| SEIFA decile | 8/10 +NSW | 6.0/10 | 6.0/10 | 10.0/10 |
| Unemployment | 0.0% -NSW | 5.0% | 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.
Calga is a locality 49 km from Sydney in New South Wales, classified as inner regional by the ABS. The postcode is 2250. It falls within the Sydney - Baulkham Hills and Hawkesbury region. The local government area is Central Coast (NSW).
According to the 2021 Census, Calga has a population of 134 with a median age of 43. The median weekly household income is $2,124, close to the NSW average. The Indigenous population is 5 (3.7% of residents).
Housing in Calga includes a median weekly rent of $350, median monthly mortgage repayment of $2,485, with 47 total dwellings. These housing costs sit above the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 67.4% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Calga scores in decile 8 out of 10, which is above the national average.
Calga is part of the Hawkesbury statistical area in New South Wales.
Calga details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2250 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 134 |
| Median Age | 43 years |
| Median Household Income (Census 2021) | $2,124/week |
| Median Personal Income (Census 2021) | $812/week |
| Median Weekly Rent (Census 2021) | $350 |
| Median Monthly Mortgage (Census 2021) | $2,485 |
| Average Household Size | 3 persons |
| Area | 17.5 km² |
| Population Density | 8/km² |
| Total Dwellings | 47 |
| Australian Citizens | 91.0% |
| Indigenous Population | 5 (3.7%) |
| Unemployment Rate | 0.0% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -33.432 |
| Longitude | 151.218 |
| Distance from Sydney | 49 km |
| Region (SA4) | Sydney - Baulkham Hills and Hawkesbury |
| Area (SA3) | Hawkesbury |
| Local Government | Central Coast (NSW) |
| Federal Electorate | Robertson |
| State Electorate | The Entrance |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 27 (20.1%) |
| 15–24 years | 13 (9.7%) |
| 25–44 years | 35 (26.1%) |
| 45–64 years | 41 (30.6%) |
| 65+ years | 24 (17.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Arthritis | 14 (10.4%) |
| Asthma | 12 (9.0%) |
| Lung Condition | 7 (5.2%) |
| Cancer | 4 (3.0%) |
| Diabetes | 3 (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 | 0 (0.0%) |
| 1 vehicle | 11 (23.4%) |
| 2 vehicles | 17 (36.2%) |
| 3+ vehicles | 19 (40.4%) |
Suburbs Near Calga
Same Postcode (2250)
More Calga 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.