The average U.S. gasoline price is $ 3.51 per gallon , the Gas Survey finds . North American oil is behind gas pump prices , the survey 's publisher says . Top prices were on Long Island ; the cheapest price was in Denver .
The average U.S. gasoline price is $ 3.51 per gallon , the Lundberg Survey finds . North Sea oil is driving U.S. pump prices , the survey 's publisher says . Top prices were on Long Island ; the cheapest gas was in Denver .