The average small gas station owner makes between $12,000.00 to $40,000.00 per year depending on the location of the gas station and if it's the only gas station they own.
Most gas station owners do not earn all that much from the gasoline or diesel sales alone.
An average gas station owner makes around 3 to 10 cents per gallon profit off of gasoline which is not all that much but if they sell a lot of gasoline or diesel monthly then they can make a decent profit.
Most gas station owners make most of their profit and income off of other sales such as snacks, sodas, food etc.
So if you want to support a small gas station business make sure to buy other things such as soda, beer, food etc to help support their business.
Other large gas station owners such as Kroger, Murphy's Loves etc make millions of dollars in profit per year and the owner of Loves gas station is a billionaire and rakes in billions of dollars in profit per year.
But he owns and operates more than one or two gas stations.