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Wyoming gas prices

Current Wyoming fuel prices: regular $3.975, premium $4.54, diesel $4.734. See why an oil state still pays above the US average and how taxes factor in.

Wyoming average gas prices

RegularMid-GradePremiumDiesel
Current avg.$3.975$4.247$4.540$4.734
Yesterday$3.995$4.291$4.554$4.749
Week ago$4.123$4.398$4.703$4.948
Month ago$4.496$4.780$5.077$5.443
Year ago$3.173$3.441$3.741$3.537

Price trend

Average regular gasoline in Wyoming over the past 12 months (USD per gallon).

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Gas prices by city in Wyoming

Cheyenne$3.611Regular
Casper$3.827Regular

Gas Prices in Wyoming: What's Behind the Numbers at the Pump

Wyoming is one of those rare American states that produces far more energy than it consumes, yet drivers here still feel the squeeze when oil markets move. As of the latest reading, a gallon of regular unleaded averages $3.975 across the state, with mid-grade at $4.247 and premium reaching $4.54. Diesel, the lifeblood of Wyoming's ranching, mining, and long-haul trucking economy, sits at $4.734 per gallon. Those figures are pulled from just two metro reporting areas, which is worth keeping in mind: with such a small, spread-out population, statewide averages can swing more than they would in a dense market.

Wyoming gas prices — illustration

Wyoming Sits Above the National Average

Here's the surprising part. The current US national average for regular is about $3.867, which means Wyoming drivers are paying roughly 11 cents more per gallon than the typical American, even though the state is a major oil and gas producer. That seems backwards until you account for geography. Wyoming has only a handful of refineries (Sinclair, Cheyenne, Newcastle), the population is tiny, and gas stations are often hundreds of miles apart along I-80 and I-25. Trucking fuel long distances to thinly populated towns adds cost that crude abundance simply can't offset.

Taxes and Why They Stay Modest

Wyoming's combined state and federal fuel tax is on the lower end nationally. The state gasoline excise tax is 24 cents per gallon (23-cent base plus a 1-cent cleanup fee), layered on top of the 18.4-cent federal gas tax and 24.4-cent federal diesel tax. There's no additional sales tax applied to motor fuel at the pump. Compare that to high-tax states like Pennsylvania or Connecticut, where layered taxes push the baseline well above what Wyoming charges. So if taxes aren't the culprit here, the elevated price is mostly about distribution logistics and refinery capacity, not government levies.

An Energy Exporter, Not an Importer

Wyoming is a net energy exporter on a massive scale. It's the nation's leading coal producer and a heavyweight in crude oil and natural gas. Paradoxically, being an oil state doesn't translate into the cheapest gas, because crude is a globally priced commodity. When West Texas Intermediate (WTI) rises, Wyoming pump prices follow, regardless of how many wells dot the Powder River Basin. The state captures value through severance taxes and royalties that fund its budget, but those revenues don't subsidize retail fuel for residents. There are no consumer fuel subsidies in the US, so Wyomingites pay full market rate like everyone else.

Diesel, Trucking, and the Wider Spread

The diesel price of $4.734 deserves attention because Wyoming's economy leans heavily on it. Energy extraction, agriculture, and freight all run on diesel, and the gap between diesel and regular here (nearly 76 cents) reflects steady commercial demand plus the higher federal diesel tax. This pattern of premium diesel echoes other rural, freight-heavy states like neighboring Montana and rural-leaning Vermont, where distance and limited fueling infrastructure raise costs across the board.

What the Numbers Suggest

The roughly 57-cent spread between regular ($3.975) and premium ($4.54) is a normal three-tier gradient, signaling that Wyoming's market isn't experiencing acute supply stress at any single grade. Prices above the national average, combined with the small sample of reporting metros, suggest drivers should expect more volatility than national headlines imply. When refinery maintenance season hits or a Rocky Mountain pipeline hiccups, Wyoming can feel it faster than coastal states with deeper supply pools.

Wyoming gas prices trends — illustration

FAQ

Why is gas more expensive in Wyoming if it's an oil-producing state?

Crude oil is priced globally, so producing it locally doesn't guarantee cheap gas. Wyoming's tiny population, limited refinery capacity, and vast distances between stations raise distribution costs, pushing pump prices above the national average despite abundant local oil.

How much is the gas tax in Wyoming?

Wyoming charges a 24-cent-per-gallon state fuel tax (a 23-cent base plus a 1-cent cleanup fee), on top of the federal 18.4-cent gas tax and 24.4-cent diesel tax. Motor fuel is not subject to additional state sales tax.

Is Wyoming gas cheaper than the US average?

No. At about $3.975 for regular, Wyoming runs roughly 11 cents above the US national average of $3.867, driven mainly by logistics and sparse population rather than by taxes.