Gas Prices by State Show Another Sharp Jump
Gas prices by state are giving American drivers a striking picture of how quickly fuel costs have climbed. The national average for regular unleaded gasoline reached about $4.44 per gallon on Thursday, Sept. 17, according to data cited by USA TODAY from AAA and the U.S. Energy Information Administration. That was up from $4.28 a week earlier and more than $1.20 higher than a year ago.
The latest increase means drivers across the country are feeling the pressure at the pump, but the impact is far from uniform. California remained the most expensive state for regular gasoline, while Washington and Hawaii also posted averages above $5 per gallon.
At the other end of the map, Indiana, Texas and Mississippi remained among the states with the lowest prices.
The difference between the most and least expensive states is now more than $2 per gallon. For a driver filling a 15-gallon tank, that can translate into more than $30 for a single fill-up.
Gas Prices by State: Where Fuel Costs Are Highest
California continues to dominate the high end of the gas-price map.
USA TODAY reported that California’s average price was about $6.09 per gallon on Sept. 17. Washington followed at approximately $5.58, while Nevada was around $5.19. Hawaii, another state known for elevated fuel costs, averaged about $5.48 per gallon.
Independent daily state-level tracking also showed California, Washington and Hawaii among the nation’s most expensive markets. The Sept. 17 figures put California at about $6.08, Washington at $5.58 and Hawaii at $5.48.
That means a driver in California could be paying more than $2 per gallon above someone filling up in one of the cheapest states.
The regional differences are not simply the result of crude oil prices. State fuel taxes, refinery capacity, transportation infrastructure, environmental requirements and local gasoline specifications can all affect the final price motorists see at the pump.
California Remains Above $6
California’s position at the top of the gas prices by state rankings is particularly important because the state has a huge population and millions of drivers.
A $6-plus average can quickly increase the cost of commuting, school transportation, vacations and other everyday driving.
California also has a comparatively isolated fuel market and specialized gasoline requirements. Those factors can make the state more sensitive to refinery disruptions and changes in regional fuel supplies.
Recent reporting has highlighted the broader financial consequences of expensive gasoline and diesel. Higher transportation costs can eventually affect products that have to be moved by truck, adding another layer of pressure to household budgets.
The Cheapest States for Gas
While drivers on the West Coast face some of the country’s highest prices, several states in the Midwest and South remain considerably cheaper.
As of Sept. 17, Indiana had the lowest average price at about $3.92 per gallon, according to current state-level data. Texas and Mississippi were close behind at approximately $3.94 per gallon.
Other relatively inexpensive states included Louisiana, Oklahoma, Kansas, Tennessee and Arkansas.
The difference is significant.
A 15-gallon fill-up at $3.92 costs about $58.80. At $6.08, the same tank costs approximately $91.20.
That creates a difference of more than $32 per fill-up.
For households that drive long distances every week, the annual impact can become substantial.
Why Are Gas Prices Rising?
Several forces are pushing gasoline prices higher.
One of the biggest factors is the price of crude oil. Gasoline is ultimately tied to the global oil market, meaning geopolitical disruptions can quickly affect prices even when the disruption occurs thousands of miles away from an American gas station.
The current fuel-price surge has unfolded against the backdrop of the continuing Iran war and disruptions affecting global energy and shipping markets. USA TODAY reported that gasoline prices have repeatedly increased since the conflict began more than six months ago.
Oil-market uncertainty has also pushed crude prices higher. Recent reporting has linked elevated fuel prices to instability around major shipping routes and concerns about global oil supplies.
Refining costs are another important component.
Crude oil must be processed into gasoline before it reaches consumers. If refinery operations are disrupted or regional supplies become tighter, wholesale gasoline prices can rise even when crude prices are relatively stable.
Transportation also matters.
States located near major refining centers or fuel pipelines can have different pricing dynamics from states that rely more heavily on imported fuel.
Why Gas Prices Differ So Much From State to State
A national average can hide enormous differences.
The latest gas prices by state show a spread of more than $2 per gallon between California and Indiana. That gap cannot be explained by crude oil alone because crude is traded on a global market.
State taxes are one factor.
Every gallon of gasoline sold in the United States includes federal taxes, while states add their own fuel taxes and fees. Those state-level policies vary considerably.
Fuel specifications can also matter.
California, for example, uses gasoline formulated to meet the state’s environmental standards. Because that fuel differs from gasoline sold in many other markets, supply flexibility can be more limited.
Refinery geography is another factor.
Texas has a huge refining industry and sits at the center of the U.S. Gulf Coast energy network. That helps explain why Texas can have some of the nation’s lowest retail gasoline prices despite being one of the country’s largest oil-producing states.
Current data put Texas at roughly $3.94 per gallon, compared with more than $6 in California.
Gas Prices by State Are Rising Across the Country
The recent increase is not limited to a handful of states.
Current state-level data show gasoline prices above their levels from the previous week in essentially every part of the country. The national average increased from about $4.30 per gallon on Sept. 10 to roughly $4.44 on Sept. 17, according to weekly data compiled from AAA.
That represents an increase of about 14 cents in just one week.
Over a month, the change is even more noticeable. The latest national figures show the average price roughly 34 cents higher than a month earlier and more than $1.20 above the level recorded a year ago.
The increases are especially painful because gasoline is an unavoidable expense for many households.
Workers who commute by car cannot always reduce their driving. Parents may need to make multiple school and activity trips, while rural residents often have few alternatives to personal vehicles.
West Coast Drivers Face the Biggest Pressure
The West Coast remains the most expensive part of the country for gasoline.
California leads the rankings, but Washington and Oregon are also experiencing elevated prices. Oregon was around $5.11 per gallon in the Sept. 17 state-level figures, while Washington stood at $5.58.
The pressure is particularly visible in major metropolitan areas.
In Portland, regular gasoline averaged about $5.18 per gallon on Sept. 16, according to AAA data cited by Axios. The regional average was up 35 cents from a month earlier and nearly 73 cents from a year earlier.
Seattle-area drivers were facing an average of about $5.71 per gallon on Sept. 15, also according to AAA data cited by Axios.
Those figures illustrate how state averages can still underestimate the cost faced by drivers in particularly expensive metropolitan markets.
What Higher Gas Prices Mean for Inflation
Gasoline has an unusually powerful effect on the economy because transportation is connected to almost every part of the consumer market.
When fuel becomes more expensive, households immediately feel the impact at the pump. But the effects can extend beyond gasoline.
Trucks transport food, clothing, household products, construction materials and countless other goods. When diesel and gasoline costs rise, transportation companies can face higher operating expenses.
Those costs may eventually be passed along to businesses and consumers.
Recent reporting has already connected higher fuel and diesel prices with broader cost-of-living pressures. California, for example, has seen diesel prices climb sharply, raising concerns about transportation costs for goods moving through the state.
That makes the latest gas prices by state data more than a simple snapshot of what drivers pay at the pump.
The figures are also an indicator of wider economic pressure.
Will Gas Prices Fall Soon?
Drivers hoping for immediate relief may have to wait.
Gasoline prices can move quickly in either direction, but the timing depends on crude oil prices, refinery operations, inventories, seasonal fuel demand and geopolitical developments.
The transition to winter-blend gasoline can sometimes provide seasonal relief because the production requirements for winter fuel can be less costly. However, that benefit can be overwhelmed if crude oil prices or geopolitical risks remain elevated.
GasBuddy analysts have warned that continued instability could keep fuel prices volatile. Recent reporting said prices increased across every state during the week ending Sept. 14, while the company cautioned motorists not to expect substantial near-term relief.
That means drivers should prepare for continued fluctuations rather than assume that prices will quickly return to earlier 2026 levels.
How Drivers Can Reduce Fuel Costs
Consumers cannot control global oil prices, but they can reduce the amount they spend on gasoline.
Shopping around can make a difference, especially when prices vary substantially between nearby stations. Drivers can compare prices through fuel-price apps and station websites before filling up.
Vehicle maintenance also matters.
Properly inflated tires, regular maintenance and avoiding unnecessary weight can improve fuel efficiency. Combining errands and avoiding unnecessary trips can also reduce total fuel consumption.
For drivers who have flexibility, filling up when prices temporarily dip can help.
The savings from a few cents per gallon may seem small, but they add up over dozens of fill-ups.
The Gas Price Map Is a Warning for Consumers
The latest gas prices by state map highlights a growing divide in fuel costs across the United States.
California remains above $6 per gallon, while Washington and Hawaii are also above $5.40. Meanwhile, drivers in Indiana, Texas and Mississippi can find average prices near or below $4 per gallon.
The national average of about $4.44 is already putting pressure on household budgets, particularly for people who depend heavily on their cars.
And gasoline is only part of the story.
If elevated oil prices continue to raise transportation and diesel costs, consumers could eventually see additional pressure on the prices of goods and services.
For now, the most important message from the latest gas prices by state data is simple: the fuel-price surge is nationwide, but its impact depends heavily on where drivers live.
With geopolitical risks still affecting energy markets, motorists may want to keep watching both their local pump prices and the national trend in the weeks ahead.
