Gas is getting more expensive in Mississippi. AAA says the average price statewide is up more than three cents since Tuesday, now at $3.09. It’s the biggest one-day increase since the spring price spike ended in June. And the auto club says there are only six counties where gas is still averaging less than $3. At the beginning of the week, there were 13. Leake County almost joined the club, getting down to $3 Tuesday. But the average price there has climbed to $3.03. Neshoba County is averaging $3.12 and Attala County $3.21. AAA says Mississippi still has the cheapest gas prices in the country.