Gas prices

Average Gas Price by State

US gas prices vary by more than $2/gallon between the cheapest states (Texas, Mississippi, Louisiana) and the most expensive (California, Hawaii, Washington). State taxes and refinery access drive most of the gap.

Updated for 2026
US units
US avg fuel prices
EPA-style MPG
Transparent assumptions

How to read this guide

Examples: Numbers shown in this guide are illustrative estimates, not personalized quotes.
Use the calculators: For exact figures use the linked calculators with your real MPG, miles and local fuel price.
Updated periodically: Content is reviewed against recent EPA, DOE, AAA and EIA references.

Why prices vary so much

Three main factors: state gas tax (ranges from $0.09 in Alaska to $0.78 in California per gallon), refinery distance, and local environmental regulations (e.g. California's reformulated gasoline blend).

Cheapest states for gas

Texas, Mississippi, Louisiana, Alabama, and Oklahoma consistently rank in the bottom five for gas prices — typically $2.85–$3.10/gal. See the cheapest states for gas guide.

Most expensive states

California, Hawaii, Washington, Nevada and Oregon top $4.20+/gal regularly. See the most expensive states guide.

State	Avg gas price	Cost for 1,000 mi (30 MPG)
Texas	$2.95	$98
Mississippi	$3.00	$100
Florida	$3.30	$110
US average	$3.45	$115
New York	$3.65	$122
Washington	$4.30	$143
California	$4.85	$162
Hawaii	$4.95	$165

Approximate averages — actual prices fluctuate weekly.

Frequently asked questions

Why is California gas so expensive?

California has the highest state gas tax (~$0.78/gal), strict environmental fuel blend requirements, and limited refinery capacity.

Where is gas cheapest in the US?

Texas, Mississippi and Louisiana consistently rank cheapest, often $0.40–$0.60 below the national average.

How often do gas prices change?

Daily at the wholesale level. Most stations adjust 2–4 times per week. Apps like GasBuddy track real-time station prices.