Gas prices are up across the country, but nowhere are they up as much as in Johnson County, Wyo., where an average gallon of gas would run you $4.37 a gallon Friday, 70% more than the price at the start of the Iran war.
How much gas prices have increased depends on where you live, an NBC News analysis of average gas price data from AAA shows. Johnson County’s price was up $1.81 a gallon, while Fisher County, Texas, population 3,600, prices had only increased 51 cents as of Friday.
It also depends on the state. In Indiana, average gas prices are up $0.78 per gallon, among the lowest state-level increases in the nation (Indiana has repeatedly suspended its state gas tax). But in Montana, the average price is up $1.52 per gallon, the largest state-level increase in the U.S.
This map, showing the latest county-level gas prices and the change in prices since the start of the war, will be updated daily.
Polling consistently indicates that prices and the economy rank among voters’ top issues ahead of the midterm elections. An April poll showed gas prices were a problem for nearly two-thirds of Americans.
As of early May, counties have seen increases of an average of $1.47 per gallon. However, about 100 counties, mostly in Indiana and Ohio, have seen price increases of $2 per gallon or more. Conversely, a little more than a dozen counties — mostly in Georgia and Nebraska — have seen price increases of less than $1 per gallon.
See the trends of gas prices nationally and on the state level with the NBC News gas price tracker, and calculate how much the gas price increase has cost you with the the NBC News gas cost calculator.

