Gas prices across the United States vary by more than $2.00 per gallon depending on where you fill up. Understanding which states consistently offer the cheapest gas — and why — can save drivers hundreds of dollars annually.
The Cheapest States for Gas
Mississippi, Oklahoma, Texas, Louisiana, and Arkansas consistently rank among the cheapest states for gasoline. These states share common characteristics: low state fuel taxes, proximity to Gulf Coast refinery infrastructure, and fewer environmental fuel-blend requirements that add production costs.
Why Some States Are So Expensive
California leads the nation in gas prices due to the nation's highest state fuel taxes and fees ($0.68+/gallon), stringent environmental fuel formulation requirements, cap-and-trade carbon costs, and limited pipeline connectivity that makes the state dependent on in-state refinery output. Hawaii's isolation requires all fuel to arrive by tanker, adding significant transportation costs.
Tax Is the Biggest Factor
State motor fuel taxes range from $0.0895/gallon in Alaska to $0.6817/gallon in California. This single factor explains most of the state-to-state price variation. Federal excise tax adds another $0.184/gallon uniformly nationwide.