The last time that the American gas prices were on average below $ 2.00 for a whole month during the peak of the COVID-19 Pandemie in 2020. Nowadays the average prices are rising well above $ 3.00 and. Although the costs vary per state and the province, one is standing out as more expensive than the rest.
Surprisingly, it is not California. On September 17, 2025, the state of Washington has the highest average gas prices in the nation, according to AAA, for $ 4,657 per gallon. California follows closely at $ 4,656 per gallon.
Washington’s average is $ 1,457 above the national average of $ 3,200. Within the state, San Juan County is at the top of the list at $ 4,979 per gallon, while King County – the home to Seattle and several large cities – is third with an average of $ 4,881.
Currently there is only one province in the state of Washington with average fuel prices of less than $ 4.00; Asotin County in Southeast Washington has an average fuel price of $ 3,982 per gallon.
In the meantime, these are the five most expensive provinces in the state of Washington:
- San Juan County: $ 5,419
- Pacific: $ 4.979
- King: $ 4,881
- Columbia: $ 4,873
- Jefferson: $ 4,876
California and Washington are not the only states with gas prices of more than $ 4.00 per gallon. Oregon is also above that brand, on average $ 4.279 per gallon. Hawaii is on average $ 4.475 per gallon. States in the neighborhood – Including Nevada ($ 3,925), Arizona ($ 3,580), Idaho ($ 3,536) and Utah ($ 3,396) – arranging for now under $ 4.00 threshold.
From September 17, 2025, these are the five states with the highest average gas prices:
- Washington: $ 4,657
- California: $ 4,656
- Hawaii: $ 4.475
- Oregon: $ 4.279
- Nevada: $ 3,925
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