Lewiston Postcode
South Australia
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Lewiston Compares
Lewiston vs the SA average and the national average (2021 Census, population-weighted).
| Metric | Lewiston | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $1,910 +SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $330 ≈SA | $308 | $390 | $329 |
| Mortgage/month | $1,690 ≈SA | $1,558 | $1,958 | $1,666 |
| Median age | 42 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 4/10 ≈SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 3.7% -SA | 6.0% | 5.0% | 6.0% |
Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Lewiston is a locality 36 km from Adelaide in South Australia, classified as inner regional by the ABS. The postcode is 5501. It falls within the Barossa - Yorke - Mid North region. The local government area is Adelaide Plains.
According to the 2021 Census, Lewiston has a population of 3,275 with a median age of 42. The median weekly household income is $1,910, above the SA average. The unemployment rate is 3.7%, lower than the SA average. The Indigenous population is 61 (1.9% of residents).
Housing in Lewiston includes a median weekly rent of $330, median monthly mortgage repayment of $1,690, with 1,102 total dwellings. Owner-occupied dwellings (owned or mortgaged) make up 93.8% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Lewiston scores in decile 4 out of 10, which is below the national average.
Lewiston is part of the Lower North statistical area in South Australia.
Lewiston Details
| Postcode | 5501 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 3,275 |
| Median Age | 42 years |
| Median Household Income (Census 2021) | $1,910/week |
| Median Personal Income (Census 2021) | $766/week |
| Median Weekly Rent (Census 2021) | $330 |
| Median Monthly Mortgage (Census 2021) | $1,690 |
| Average Household Size | 2.9 persons |
| Area | 41.0 km² |
| Population Density | 80/km² |
| Total Dwellings | 1,102 |
| Australian Citizens | 92.4% |
| Indigenous Population | 61 (1.9%) |
| Unemployment Rate | 3.7% |
| SEIFA IRSAD Decile | 4/10 (below average) |
| Latitude | -34.604444 |
| Longitude | 138.591389 |
| Distance from Adelaide | 36 km |
| Region (SA4) | Barossa - Yorke - Mid North |
| Area (SA3) | Lower North |
| Local Government | Adelaide Plains |
| Federal Electorate | Grey |
Age Profile
Show counts
| 0–14 years | 576 (17.6%) |
| 15–24 years | 442 (13.5%) |
| 25–44 years | 710 (21.7%) |
| 45–64 years | 1,144 (34.9%) |
| 65+ years | 406 (12.4%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 4 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 364 (11.1%) |
| Asthma | 358 (10.9%) |
| Diabetes | 181 (5.5%) |
| Heart Disease | 129 (3.9%) |
| Cancer | 104 (3.2%) |
| Lung Condition | 83 (2.5%) |
| Dementia | 12 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 7 (0.6%) |
| 1 vehicle | 177 (16.3%) |
| 2 vehicles | 379 (34.9%) |
| 3+ vehicles | 522 (48.1%) |
Suburbs Near Lewiston
Same Postcode (5501)
More Lewiston 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.