Gas prices in Mississippi today
Regular gasoline in Mississippi averages $3.43 per gallon as of Monday, July 13, 2026, 44 cents per gallon below the US national average of $3.87 [EIA · 13 Jul 2026]. On-highway diesel is $4.44, -44 cents off the national diesel mean of $4.88. Most weeks Mississippi prints the cheapest gallon in the country.
Source: [AAA · 13 Jul 2026] · State excise: 18.4 cents/gal · PADD 3
Mississippi's pump-price cost stack
Every gallon you buy at the pump breaks down into five named slices. For Mississippi today, the stack looks like this:
Crude / refining / distribution shares estimated from EIA Petroleum Marketing Monthly. Federal excise from FHWA Highway Statistics. State excise from the API Motor Fuel Tax Map and Tax Foundation 2026. [EIA · 13 Jul 2026] [API · 13 Jul 2026]
Border-state comparison
For drivers crossing in or out of Mississippi, here is how the neighbours print today:
Use the border comparator to compute the per-tank savings of crossing into a cheaper neighbour, and the round-trip mileage at which the detour pays for itself.
Cheapest metro in Mississippi
Today's cheapest metro in Mississippi is generally Gulfport. Within-state spread is typically 20-40 cents per gallon depending on county tax overlays, station brand and distance from the wholesale rack. AAA publishes metro-level detail for Mississippi updated daily.
FAQ
What is the current average price of regular gas in Mississippi?
$3.43 per gallon as of Monday, July 13, 2026, 44 cents below the national average. [AAA · 13 Jul 2026]
What is Mississippi's state gas tax?
18.4 cents per gallon state excise, plus the 18.4 cents federal excise. [API · 13 Jul 2026]
Where is gas cheapest in Mississippi today?
Gulfport is typically the cheapest metro. Regional spread is normal at 20-40 cents per gallon.