"Now that the price is super high, I drive 10 minutes to Wisconsin," Illinois resident Fran Meza said. "It's $.50 cheaper. It makes a difference."
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The pumps are filled with many vehicles bearing Illinois license plates. Many of the customers come from 10 to 15 miles away because they say it's worth it for what they save buying gas here.
"I can save about 12 bucks on gas," Illinois resident Carl Powell said. "It's only a 20 minute drive, well worth the trip."
IL gas prices: Illinois drivers flock to WI for cheaper fill-ups
Some drivers have to be in Wisconsin for work anyway.
"There's a nice bonus for being up here," Illinoisan Greg Wernisch said. "The nice bonus is $.50-$.60 a gallon saving on gasoline."
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Driving over the state border for cheaper gas is not new, but with the price of gas rising quickly over the last couple of weeks, the difference in price from Illinois to Wisconsin is bigger than ever.
It's a similar situation in Indiana. While more expensive than Wisconsin, gas is still less there than in Illinois.
According to AAA, gas in Wisconsin averages about $4.01. Indiana is at about $4.22, and the Illinois average is a whopping $4.55.
"I believe that's the reason why it's cheaper here is because of the taxes difference," gas station manager Vasilije Sekularac said.
According to the American Petroleum Institute, state gasoline taxes in Illinois are the third highest in the country. The taxes are about $.20 a gallon higher than here in Wisconsin, and that doesn't even include city and county taxes.