As gas prices climb to seven-year highs in AmericaDrivers in certain states are more vulnerable than others.

Average gas prices in the U.S. were $3.378 per gallonGasBuddy Data as of October 21,

However, this average hides an extremely wide range of prices across the fifty states. Oklahoma’s average gasoline price is $2.982 per gallon. GasBuddy data showsThis is what it looks like. California has the highest gas prices at $4.531/gallon.

This price gap can be explained by regional oil refinery access. Gas prices on the Gulf Coast might be less than those in the West Coast, for example, because it has greater access to oil refineries.

Rocky Mountains act as barriers separating Western states and the West Coast. The number of pipelines linking the area to the rest is limited by this.

Taxes and policies also have a significant role. California’s high price tags are due in part to California’s unique fuel mix requirements and higher taxes for its carbon management program.