Gas Prices by State (2026) — Cheapest and Most Expensive States for Gas

Gas Prices by State in 2026

California has the most expensive gas in the country in 2026 at roughly $4.75 per gallon for regular, while Mississippi has the cheapest at about $2.70. That's a $2.05 spread for the exact same commodity — enough to add $25+ to a single tank depending on where you fill up. The national average sits near $3.10 per gallon.

The map below shows average regular gas prices across all 50 states. The West Coast and Northeast run hot; the Gulf Coast and Mountain South stay cheap. Hover or tap any state for its price.

10 Most Expensive States for Gas (2026)

The pattern is clear: the priciest states combine high fuel taxes with refinery isolation. California, Washington, and Oregon all sit far from Gulf Coast refineries and levy some of the nation's steepest gas taxes; Hawaii and Alaska pay a permanent shipping premium that also shows up in our cost of living by state rankings.

10 Cheapest States for Gas (2026)

The cheapest gas clusters along the Gulf Coast and lower Midwest, where refineries are close, pipelines are plentiful, and state fuel taxes are low. These are many of the same states that top our cost-adjusted income rankings — low fuel and housing costs stretch a paycheck further.

What Actually Determines Gas Prices in Each State

Roughly 55–60% of the pump price tracks the global price of crude oil, which is the same everywhere. The state-to-state differences come from four levers:

• State fuel taxes. California, Illinois, Pennsylvania, and Washington charge the highest per-gallon taxes; the Gulf Coast states charge among the lowest. This alone can account for 50–70 cents of the spread.
• Refinery access and pipelines. Gulf Coast states sit next to the nation's refining hub. The West Coast is its own isolated market — when a California refinery goes offline, prices spike with no easy way to import supply.
• Fuel blend requirements. California and a few metros require special low-emission gasoline blends that cost more to produce and can't be sourced from ordinary refineries.
• Seasonality. Summer-blend fuel and peak driving demand push prices up from spring through fall, then ease in winter — a swing that hits every state.

Gas Prices and the Bigger Energy Picture

Fuel is only one slice of a household's energy bill. States with cheap gas don't always have cheap electricity, and vice versa. Compare where you live across the full StatsPanda energy and cost picture:

• Gas Prices By State (interactive map)
• Electricity Prices By State
• Electric Vehicle Adoption By State
• Cost of Living by State (2026)
• Renewable Energy Consumption By State
• Power Plants Map (interactive tool)

Frequently Asked Questions

Which state has the most expensive gas in 2026?

California, at about $4.75 per gallon for regular — roughly $1.65 above the U.S. average. Hawaii and Washington are next.

Which state has the cheapest gas in 2026?

Mississippi, at around $2.70 per gallon, followed by Texas, Louisiana, Alabama, and Arkansas — all low-tax Gulf Coast states near major refineries.

Do gas prices change during the year?

Yes. Prices typically rise in spring as refineries switch to more expensive summer-blend fuel and demand climbs for the driving season, then fall in autumn and winter. The rankings above are annual averages; day-to-day prices move with crude oil.

How much of the gas price is tax?

Federal tax is 18.4 cents per gallon everywhere. State taxes range from roughly 15 cents to over 60 cents per gallon, which is the single biggest reason neighboring states can differ by 50 cents or more.