Gas Prices by State. Average Daily U.S. Gas Prices for All 50 States.
National Average · Regular
$4.30
per gallon, across all 50 states
Price History
National Average · Regular Gasoline
$4.50
$4.00
$3.50
Today
Cost to Fill Up
gallons of Regular
Cheapest
$55.62
Oklahoma
National avg
$64.50
across all 50 states
Most expensive
$90.15
California
By the Numbers
Regional Averages
Common Questions
Why do gas prices vary so much by state?
It mostly comes down to taxes, fuel rules, and how close a state is to a refinery. State and federal taxes range from about 9 cents a gallon in Alaska to over 70 cents in California. California also requires its own low-emission CARB blend that other states don't use. Gulf Coast states tend to have lower prices since refineries are right there.
How often are these prices updated?
AAA's Daily Fuel Gauge Report surveys more than 60,000 retail stations every day across all 50 states and DC. This page pulls fresh data each time you load it. The timestamp under the headline shows when.
What makes daily prices change?
About half the retail price comes from crude oil, a quarter from taxes, 15 percent from refining, and 10 percent from distribution and marketing. Daily swings come from oil market moves, weather (especially hurricanes that affect Gulf refineries), seasonal demand, and geopolitical events.
How does the price of oil affect gas prices?
Crude oil makes up about half of what you pay at the pump, so it's the single biggest factor. When oil prices move, gas prices typically follow within one to two weeks since refineries usually work through their existing inventory before passing changes along. A common rule of thumb: every $10 change in the price of a barrel of crude oil shifts gas prices by about 25 cents per gallon. The other costs in your gas, like taxes, refining, and distribution, are relatively stable, so oil is the main driver of the swings you see.
Why is California consistently the most expensive?
A few things stack up. California has some of the highest state fuel taxes in the country (over 70 cents a gallon). It requires its own CARB clean fuel blend, so out-of-state gas can't easily fill in when supply gets tight. The state's refineries also don't have a lot of spare capacity, so any disruption pushes prices up fast.
What's the difference between UNL 88 and E85?
UNL 88, also known as E15, is gasoline mixed with 15 percent ethanol, a bit more than the standard E10 most pumps sell. E85 has up to 85 percent ethanol and only works in a flex-fuel vehicle. E85 usually costs 15 to 25 percent less per gallon than regular gas, but you'll get about 25 percent fewer miles per gallon since ethanol packs less energy.