Suburb fuel prices
Cheap Unleaded 91 in Williamstown South Australia 5351
16.6c above the South Australia average — Prices here track the Adelaide cycle — check the 7-day outlook below before you decide.
Prices as of 4 min ago AEST · sourced from SA Fuel Pricing Information Scheme
WAIT
U91 in Williamstown is dearer than the South Australia average
Williamstown sits 16.6c above the South Australia average. Prices here track the Adelaide cycle — check the 7-day outlook below before you decide.
How it compares
- South Australia state avg163.8c/L+16.6c/L
- National avg167.1c/L+13.3c/L
- Wholesale (TGP)154.1c/L+26.3c/L
Top stations
Cheapest U91 stations in Williamstown
Sorted by current U91 price. Tap a station for grades, directions and price age.
7-day outlook
Williamstown 7-day U91 outlook
Williamstown prices follow the Adelaide cycle, so this outlook takes the Adelaide U91 forecast and adjusts it to Williamstown's own price level using 90 days of local history. You can see the Adelaide benchmark alongside the local estimate below.
1 day until the cycle trough — usually the cheapest day.
Williamstown today (est.)
184.9c/L
Adelaide 153.9c/L · +31.0c/L local
Predicted in 7 days
193.4c/L
7-day range
181.4 – 198.8c/L
Nearby suburbs
Suburbs near Williamstown
How Williamstown compares to neighbouring areas — cheapest first, delta vs the Williamstown average.
- GaGawler BeltCheapest
148.4c
-32.0vs Williamstown - ChChain of Ponds
157.9c
-22.5vs Williamstown - MiMillbrook
157.9c
-22.5vs Williamstown - KeKersbrook
157.9c
-22.5vs Williamstown - WiWilliamstownYou
180.4c
0.0vs Williamstown - AlAltona
180.4c
0.0vs Williamstown - CoCockatoo Valley
180.4c
0.0vs Williamstown - MoMount Crawford
180.4c
0.0vs Williamstown - LyLyndoch
180.4c
0.0vs Williamstown - BaBarossa Goldfields
180.4c
0.0vs Williamstown - PePewsey Vale
180.4c
0.0vs Williamstown
At a glance
Williamstown fuel prices at a glance
- Cheapest U91
- 175.9 c/L
- Suburb average
- 180.4 c/L
- Price range
- 9.0c spread
- Stations tracked
- 2
- Brand
- 1
- Postcode
- 5351
- Last updated
- 23 June 2026, 9:37 pm AEST
Explore the area
Browse fuel prices around Williamstown
Step up to the city and state, compare neighbouring suburbs, or open the live U91 map.
Williamstown snapshot
Live U91 prices in Williamstown
How it compares
Williamstown is currently 16.6c above the South Australia state average of 163.8c. Open the live fuel map to see how individual stations spread within Williamstown.
Compare neighbouring suburbs
Cheaper fuel may be nearby — compare Altona (from 175.9c), Cockatoo Valley (from 175.9c), Mount Crawford (from 175.9c), Lyndoch (from 175.9c) or Barossa Goldfields (from 175.9c) before planning a fill-up.
Brands operating here
1 fuel brand operate stations in Williamstown, including Independent. Brand loyalty programs and discount apps can shift the cheapest pump by 4–6c/L on any given day.
Frequently asked
Williamstown fuel questions
The cheapest Unleaded 91 in Williamstown is currently at Cockatoo Valley Community Store for 175.9 c/L.
FuelRadar app
Keep Williamstown fuel prices in your pocket
Track Williamstown prices, watch the local cycle and get an alert before the next jump — from your phone.
