Casper, WY
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LiveUpdated Jun 10
Gas prices near 82604
Casper, WY · WY average $4.17/gal
Finding cheap gas in Casper (82604)
Casper's west and southwest side fills this ZIP, where CY Avenue carries the retail traffic and Wyoming Highway 220 heads out toward Alcova and the North Platte recreation country. This is the busier shopping side of the self-styled Oil Capital of the Rockies, so the fuel gathers along CY Avenue and the arterials feeding it rather than in the residential pockets toward Mills.
Wyoming runs one of the lowest gas taxes in the country, well under the national average and unchanged for over a decade, which is the main reason a Casper fill often looks cheap next to neighboring states. That low tax floor means the spread between stations is mostly about volume and brand.
The high-turnover stations along CY Avenue tend to price tightest, and the membership and grocery fuel on this side of town gives drivers a lower-cost option. Comparing a couple of stations before you stop is the simple routine.
Nearby ZIP codes in Casper, WY
How to save more on gas in Casper
1. Use warehouse clubs
Costco and Sam’s Club typically price 15-25 cents per gallon below nearby stations. Membership pays for itself within a few fill-ups.
2. Fill up early in the week
Stations often raise prices Thursday for weekend demand. Fill up Monday through Wednesday to avoid the lift.
3. Keep tires properly inflated
Properly inflated tires improve fuel economy by up to 3 percent at current prices. Check pressure once a month.
4. Check back tomorrow
Prices can shift 10-20 cents overnight during volatile markets. A quick check before you leave home avoids paying yesterday’s spike.
5. Pay cash at split-pricing stations
Stations with cash and credit split pricing typically save an average of 10 cents per gallon when you pay cash.
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Wyoming drivers pay 18¢/gal more than the US average.
Wyoming roads are wide open. AAA Roadside fills the gaps.
Get 24/7 roadside assistance with towing up to 200 miles and fuel delivery in the genuinely remote stretches.
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About gas prices in Wyoming
Wyoming hosts in-state refineries at Cheyenne (HollyFrontier, 52,000 barrels per day), Sinclair (Sinclair Wyoming, 92,000), and Casper (P66 Sinclair), making the state largely self-sufficient for fuel. The state gas tax is around 24 cents per gallon, on the lower end nationally. Cheyenne, Casper, and Laramie all see relatively competitive pricing. Maverik (a Utah-Wyoming chain), Loaf 'N Jug, Sam's Club (in Cheyenne), and Costco lead on value across Cheyenne, Casper, and Laramie. Yellowstone-area summer tourism creates seasonal price increases in the northwestern corner of the state, while the Powder River Basin coal country in northeastern Wyoming typically tracks the lowest pricing in the state due to direct refinery proximity and low local taxes.