Williamstown, SA 5351 — Suburb Profile
Last reviewed: · By Knowburb Research Team
In short
Williamstown is a suburb of South Australia, postcode 5351, home to 2,981 residents with an established residential profile. Located in the Adelaide Hills local government area (Inner Regional Australia) and roughly 42 km from the Adelaide CBD.
Snapshot
Demographics
- Population
- 2,981
- Median age
- 42 years
- Median household income
- $1,782 /week
- Median personal income
- $813 /week
- Median family income
- $2,063 /week
- Average household size
- 2.7
- Persons per bedroom
- 0.8
- Local government area
- Barossa
- Statistical region (SA4)
- Barossa - Yorke - Mid North
- Remoteness classification
- Inner Regional Australia
- Federal electorate
- Mayo
Property & cost of living
- Median rent
- $300 /week
- Median monthly mortgage
- $1,500
- Rent share of household income
- 17%
Schools
- Williamstown Primary School
- St Jakobi Lutheran School
- Lyndoch Primary School
Transport
Transport data refreshes monthly from state GTFS feeds.
Lifestyle & amenities
- 2 cafés
- 4 pubs and bars
- 4 parks and reserves
- 2 gyms and fitness centres
- 4 playgrounds
Climate
- Warmest month: Jan (28.7°C avg max)
- Coolest month: Jul (15.0°C avg max)
- Annual rainfall: 525 mm
- Reference station: Adelaide (Kent Town), 43.5 km away
NBN & connectivity
Fibre to the Node serves 48.2% of the 1,221 resolvable premises in Williamstown. Most premises here connect via fibre to a street cabinet, then copper into the home. Speeds depend heavily on the copper run length — NBN 100 is rarely achievable on long runs.
- Fibre to the Premises: 23.1%
- Fibre to the Node: 48.2%
- Fixed Wireless: 27.8%
- Sky Muster (Satellite): 0.9%
Safety
- Recorded offences: 125 across postcode 5351 in the year to FY2024–25 (down 11% on the prior year).
- Most common categories: 35 violent offences, 30 property damage, 23 theft.
Frequently asked questions
What is the population of Williamstown?
Williamstown (SA 5351) had 2,981 residents at the most recent ABS Census. The median age is 42. It sits within the Barossa local government area.
What is the median rent in Williamstown?
The median advertised rent in Williamstown is $300/week, based on SQM Research listings data. Rents vary by property type, bedrooms and condition.
Are there schools in Williamstown?
Yes — 3 schools are listed within or near Williamstown covering government, independent sectors. Nearest include: Williamstown Primary School (0.4 km), St Jakobi Lutheran School (5.8 km), Lyndoch Primary School (7.4 km). School data sourced from ACARA and state education departments.
What NBN technology is available in Williamstown?
Williamstown is predominantly served by Fibre to the Node (48.2% of premises). Coverage data is sourced from the NBN upgrade map aggregated from NBN Co address checks.
How safe is Williamstown?
Across postcode 5351, 125 offences were recorded in the 12 months to FY2024–25. The most common offence categories were violent (35), property damage (30), theft (23). Crime statistics are recorded by area (postcode or LGA), not by individual suburb. Data sourced from each state's crime statistics agency.
What is the climate like in Williamstown?
In Williamstown, mean daily temperatures range from 12.1°C to 21.9°C and annual rainfall is 525 mm measured at the Adelaide (Kent Town) weather station (43.5 km away). Long-term averages from the Bureau of Meteorology.
Sources & methodology
Demographics from ABS Census. Property data from SQM Research. Climate from Bureau of Meteorology. Schools from ACARA. NBN from NBN Co. Amenities from OpenStreetMap. See full methodology.
Additional sources for this profile: