Since data for Washington have been available, gas prices have been consistently higher in Washington state than the United States as a whole. The average price for all grades and formulations of retail gasoline in Washington State was $2.73 per gallon in 2020. Prices are down from a high of $3.88 per gallon in 2012 yet up from a more than 10-year low of $2.53 per gallon in 2016.