Mississippi diesel prices today
Mississippi diesel prices todayDiesel averages $5.95 a gallon in Mississippi on 2 October 2026 — the 45th most expensive of 51 states, and down $0.10 on the week.
Mississippi against the other states
$0.41 a gallon below the unweighted mean of AAA's 51 state averages ($6.36). The cheapest diesel is in Texas at $5.79, the dearest in California at $8.38.
Regular gas in Mississippi is $3.96, so diesel costs $1.99 more per gallon — and more than premium at $4.81.
Tax on a gallon of diesel
$0.24 federal + $0.18 Mississippi · 50th highest of 51. The rest — about $5.52 — is the fuel itself, refining, distribution and the retailer’s margin.
Rates as of 1 January 2026. Local taxes, where they apply, are not included.
Diesel prices by city in Mississippi
AAA's diesel averages for 4 Mississippi metro areas, cheapest first — $0.19 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Biloxi, Gulfport & Pascagoula | $5.84 | −$0.11 |
| Jackson | $5.84 | −$0.11 |
| Hattiesburg | $5.86 | −$0.09 |
| South Haven & Olive Branch | $6.02 | +$0.08 |
Show the data as a table
What a diesel fill-up costs in Mississippi
- Diesel car or SUV — 18 gal$107.08
- Heavy-duty pickup — 34 gal$202.27
- Box truck — 60 gal$356.94
- Semi truck, two tanks — 250 gal$1,487.25
Diesel in neighbouring states
More for Mississippi
Frequently asked questions
How much is diesel in Mississippi today?
$5.95 a gallon, AAA's Mississippi average for 2 October 2026 — the 45th most expensive of 51 states. Regular gasoline is $3.96, so diesel costs $1.99 more per gallon.
Are diesel prices going up in Mississippi?
Diesel is down $0.10 (1.6%) on a week ago, and up $2.67 on a year ago, when it was $3.28, on AAA's own earlier averages.
Where is diesel cheapest in Mississippi?
Of the 4 metro areas AAA reports in Mississippi, Biloxi, Gulfport & Pascagoula has the cheapest diesel at $5.84 a gallon and South Haven & Olive Branch the dearest at $6.02. Individual stations vary around these averages.
How much is the diesel tax in Mississippi?
$0.42 a gallon: $0.24 federal plus $0.18 in Mississippi state taxes and fees, the 50th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Louisiana ($5.89, $0.06 less). On a 100-gallon fill that is up to $6.40; whether it is worth the drive depends on how far the border is.