Costco Gas Prices in Maryland
- Regular avg
- $3.717
- Premium avg
- $4.480
- Stations reporting
- 9
Avg of 9 stations · per gallon · ▲▼ change since the previous day
Average price history in Maryland
Last 30 days · per gallonRegular: $3.919 on Oct 2 to $3.717 on Oct 31, low $3.702, high $3.919. Premium: $4.700 on Oct 2 to $4.480 on Oct 31, low $4.480, high $4.700.
Costco gas in Maryland today
Costco gas stations in Maryland include 9 warehouses across 9 cities.
Today’s Regular prices span $0.140 across the 9 stations reporting, from the cheapest to the most expensive.
Costco Regular prices in Maryland have eased about $0.202 over the past month, from $3.919 a month ago.
The furthest any single station moved was Arundel Mills, down $0.300.
- Cheapest today
- White Marsh — $3.659
- Most expensive today
- Owings Mills — $3.799
- vs the US average
- $0.559 below, at $4.275
- Diesel
- sold at none of the 9 stations
- Weekday opening
- 6 a.m. at all 9 stations
- Newest warehouse
- Owings Mills — October 2018
- Oldest warehouse
- Glen Burnie — November 1985
Maryland stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | White MarshBaltimore | Baltimore | $3.659 |
| 2 | BeltsvilleBeltsville | Beltsville | $3.669 |
| 3 | Arundel MillsHanover | Hanover | $3.669 |
| 4 | Glen BurnieGlen Burnie | Glen Burnie | $3.679 |
| 5 | FrederickFrederick | Frederick | $3.699 |
| 6 | Woodmore Towne CentreGlenarden | Glenarden | $3.699 |
| 7 | BrandywineBrandywine | Brandywine | $3.779 |
| 8 | Columbia MDElkridge | Elkridge | $3.799 |
| 9 | Owings MillsOwings Mills | Owings Mills | $3.799 |
Fuel grades at Costco in Maryland
All 9 Costco gas stations in Maryland sell Kirkland Signature fuel, which is Top Tier certified. None of them reported a diesel price in the last 30 days.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 9 | $3.717 | White Marsh $3.659 |
| Premium | 9 | $4.480 | White Marsh $4.399 |
Regular
all 9 stations87-octane Kirkland Signature unleaded, the grade most cars are built for.
- Same TOP TIER detergent package as premium. The only difference between the two is octane.
- Can contain up to 10% ethanol, like most US gasoline. The pump label shows the blend.
Premium
all 9 stationsKirkland Signature premium: 91 octane at most stations, 93 in some regions.
- Only needed if your owner’s manual requires or recommends premium. Higher octane resists engine knock; it adds nothing to an engine built for regular.
- Carries the same detergent additives as regular.
Not sold at Costco
- Mid-grade (89): Costco pumps offer regular and premium only.
- Cash sales: every Costco pump is card-only.
Is Costco gas in Maryland good quality?
Costco does not sell a refiner’s brand. Every pump in Maryland dispenses Costco’s own Kirkland Signature fuel, bought from major refiners and distributors in the region and finished with Costco’s additive package.
Kirkland Signature gasoline is licensed TOP TIER, the detergent standard set by automakers including GM, Ford, Toyota, Honda and BMW. Costco puts its detergent level at about five times the EPA minimum, which is what keeps intake valves and fuel injectors clear of carbon deposits. Costco’s gasoline also contains friction modifiers that it says reduce engine wear.
In short, the low price is not a lower grade. The saving comes from Costco running its gas as a membership perk on thin margins, not from the fuel.
Costco gas station hours in Maryland
On weekdays the earliest pumps in Maryland come on at 6 a.m. (Arundel Mills) and the last ones switch off at 10 p.m. (Arundel Mills). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Arundel Mills | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Beltsville | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Brandywine | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Columbia MD | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Frederick | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Glen Burnie | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Owings Mills | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| White Marsh | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Woodmore Towne Centre | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
What else is at Costco warehouses in Maryland
Every Costco gas station sits in a warehouse parking lot, so a fill-up can share a trip with the rest of the list.
- Food court
- 9 of 9
- Pharmacy
- 9 of 9
- Optical
- 9 of 9
- Tire center
- 9 of 9
- Car wash
- 0 of 9
- EV charging
- 0 of 9
How Costco gas works in Maryland
Bring your card. The pump asks for an active Costco membership card before it starts, at all 9 gas stations in Maryland. Without a membership, a Costco Shop Card loaded with credit works the same way.
Pay by card. The pumps take Visa, most debit cards and the Costco Shop Card. There is no cash, and a card hold of up to $150 can show until the fill posts.
Check the price first. Each station sets its own price, usually once a day, so two Costco stations in Maryland can differ. Today the regular average here is $3.717. The prices on this page are collected once daily and can lag a same-day change at the pump.
Go early or late. Lines are longest on weekend afternoons and weekday evenings. The first pumps here open at 6 a.m. on weekdays.
Maryland prices by city
- Baltimore · 1 station$3.659
- Beltsville · 1 station$3.669
- Brandywine · 1 station$3.779
- Elkridge · 1 station$3.799
- Frederick · 1 station$3.699
- Glen Burnie · 1 station$3.679
- Glenarden · 1 station$3.699
- Hanover · 1 station$3.669
- Owings Mills · 1 station$3.799
States near Maryland
- Costco gas prices Virginia · 15 stations$3.750
- Costco gas prices Delaware · 1 station$3.729
- Costco gas prices Pennsylvania · 11 stations$4.062
- Costco gas prices New Jersey · 19 stations$3.912
- Costco gas prices New York · 11 stations$3.992
- Costco gas prices Connecticut · 7 stations$3.916
Costco gas in Maryland: common questions
Where is the cheapest Costco gas in Maryland today?
White Marsh posts the lowest Regular price in Maryland, $3.659 as of the October 31, 2026 reading — $0.140 under Owings Mills, the most expensive of the 9 stations reporting.
How many Costco gas stations are there in Maryland?
Maryland has 9 Costco warehouses with a gas station, across 9 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in Maryland sell diesel?
No — none of the 9 stations in Maryland has reported a diesel price in the last 30 days. Costco sells diesel at a minority of its locations in the US.
Is Costco gas cheaper in Maryland than in the US?
Yes — the average Costco Regular price in Maryland is $3.717, $0.559 below the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Maryland going up or down?
Down — the average Costco Regular price in Maryland has eased about $0.202 over the past month, from $3.919 to $3.717.
What time do Costco gas stations in Maryland open?
The pumps open at 6 a.m. on weekdays at all 9 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.