TRENTON - Gas prices have increased in New Jersey but stayed flat across the nation as a whole, analysts say.AAA Mid-Atlantic says the average price of a gallon of regular gas in New Jersey on Friday was $2.21, up four cents from last week.
Drivers were paying an average of $2.56 a gallon a year ago at this time.RELATED: New Jersey gas tax to increase more than 9 cents on ThursdayThe national average price for a gallon of regular gasoline was $2.19, unchanged from the previous week, despite a slight uptick in demand.