Maryland diesel prices today
Maryland diesel prices todayDiesel averages $6.43 a gallon in Maryland on 2 October 2026 — the 19th most expensive of 51 states, and down $0.06 on the week.
Maryland against the other states
$0.06 a gallon above 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 Maryland is $4.29, so diesel costs $2.14 more per gallon — and more than premium at $5.19.
Tax on a gallon of diesel
$0.24 federal + $0.48 Maryland · 10th highest of 51. The rest — about $5.70 — 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 Maryland
AAA's diesel averages for 8 Maryland metro areas, cheapest first — $0.09 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Hagerstown | $6.37 | −$0.06 |
| Cumberland | $6.37 | −$0.06 |
| Bowie & St. Charles | $6.42 | −$0.01 |
| Annapolis | $6.42 | −$0.01 |
| Baltimore | $6.43 | −$0.00 |
| Frederick | $6.43 | +$0.01 |
| Salisbury | $6.46 | +$0.03 |
| Maryland DC Suburbs | $6.46 | +$0.03 |
Show the data as a table
What a diesel fill-up costs in Maryland
- Diesel car or SUV — 18 gal$115.69
- Heavy-duty pickup — 34 gal$218.52
- Box truck — 60 gal$385.62
- Semi truck, two tanks — 250 gal$1,606.75
Diesel in neighbouring states
More for Maryland
Frequently asked questions
How much is diesel in Maryland today?
$6.43 a gallon, AAA's Maryland average for 2 October 2026 — the 19th most expensive of 51 states. Regular gasoline is $4.29, so diesel costs $2.14 more per gallon.
Are diesel prices going up in Maryland?
Diesel is down $0.06 (1.0%) on a week ago, and up $2.75 on a year ago, when it was $3.68, on AAA's own earlier averages.
Where is diesel cheapest in Maryland?
Of the 8 metro areas AAA reports in Maryland, Hagerstown has the cheapest diesel at $6.37 a gallon and Maryland DC Suburbs the dearest at $6.46. Individual stations vary around these averages.
How much is the diesel tax in Maryland?
$0.72 a gallon: $0.24 federal plus $0.48 in Maryland state taxes and fees, the 10th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Virginia ($6.29, $0.14 less), Delaware ($6.43, $0.00 less). On a 100-gallon fill that is up to $14.00; whether it is worth the drive depends on how far the border is.