Average gas prices in Iowa and across the nation are the same as a week ago. Triple A says iowans are paying $2.25 cents for a gallon of regular, while the national average is $2.34. Cedar Rapids drivers are enjoying the lowest price in the state at $2.19 for regular, followed davenport at $2.20. The highest price at the pump is in the Waterloo-Cedar Falls area at $2.32 a gallon.