Gas prices have increased sharply since last week.
According to AAA, the average price in Hardin County today is $1.80 a gallon, compared to $1.42 last Monday.
Hardin County no longer has the cheapest price in the region.
That can be found in Logan County, where the average price per gallon is $1.78.
The most expensive price is Marion County at $1.88 a gallon.
The statewide average is at $1.85, and the national average stands at $1.84 a gallon.