Costco Gas Prices in South Carolina
- Regular avg
- $3.470▲ +$0.003
- Premium avg
- $4.248▲ +$0.006
- Stations reporting
- 7
Avg of 7 stations · per gallon · ▲▼ change since the previous day
Average price history in South Carolina
Last 30 days · per gallonRegular: $3.725 on Oct 2 to $3.470 on Oct 31, low $3.468, high $3.860. Premium: $4.526 on Oct 2 to $4.248 on Oct 31, low $4.242, high $4.672.
Costco gas in South Carolina today
Costco gas stations in South Carolina include the warehouses in Charleston, Columbia, Greenville, Indian Land, Mount Pleasant, Myrtle Beach, and Spartanburg.
Today’s Regular prices span $0.460 across the 7 stations reporting, from the cheapest to the most expensive.
Costco Regular prices in South Carolina have eased about $0.253 over the past month, from $3.723 a month ago.
The furthest any single station moved was Greenville, down $0.550.
- Cheapest today
- Greenville — $3.279
- Most expensive today
- Mt Pleasant — $3.739
- vs the US average
- $0.805 below, at $4.275
- Diesel
- sold at none of the 7 stations
- Weekday opening
- 6 a.m. at all 7 stations
- Newest warehouse
- Indian Land — October 2025
- Oldest warehouse
- Charleston — April 2001
South Carolina stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | GreenvilleGreenville | Greenville | $3.279 |
| 2 | Indian LandIndian Land | Indian Land | $3.289 |
| 3 | SpartanburgSpartanburg | Spartanburg | $3.429 |
| 4 | Myrtle BeachMyrtle Beach | Myrtle Beach | $3.459 |
| 5 | Columbia SCColumbia | Columbia | $3.469 |
| 6 | CharlestonCharleston | Charleston | $3.629 |
| 7 | Mt PleasantMount Pleasant | Mount Pleasant | $3.739 |
Fuel grades at Costco in South Carolina
All 7 Costco gas stations in South Carolina 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 | 7 | $3.470 | Greenville $3.279 |
| Premium | 7 | $4.248 | Greenville $4.039 |
Regular
all 7 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 7 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 South Carolina good quality?
Costco does not sell a refiner’s brand. Every pump in South Carolina 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 South Carolina
On weekdays the earliest pumps in South Carolina come on at 6 a.m. (Charleston) and the last ones switch off at 10 p.m. (Charleston). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Charleston | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Columbia SC | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Greenville | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Indian Land | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Mt Pleasant | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Myrtle Beach | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Spartanburg | 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 South Carolina
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
- 7 of 7
- Pharmacy
- 7 of 7
- Optical
- 7 of 7
- Tire center
- 7 of 7
- Car wash
- 0 of 7
- EV charging
- 0 of 7
How Costco gas works in South Carolina
Bring your card. The pump asks for an active Costco membership card before it starts, at all 7 gas stations in South Carolina. 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 South Carolina can differ. Today the regular average here is $3.470. 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.
South Carolina prices by city
- Charleston · 1 station$3.629
- Columbia · 1 station$3.469
- Greenville · 1 station$3.279
- Indian Land · 1 station$3.289
- Mount Pleasant · 1 station$3.739
- Myrtle Beach · 1 station$3.459
- Spartanburg · 1 station$3.429
States near South Carolina
- Costco gas prices North Carolina · 10 stations$3.186
- Costco gas prices Georgia · 18 stations$3.377
- Costco gas prices Virginia · 15 stations$3.750
- Costco gas prices Alabama · 5 stations$3.487
- Costco gas prices Tennessee · 8 stations$3.480
- Costco gas prices Kentucky · 4 stations$3.852
Costco gas in South Carolina: common questions
Where is the cheapest Costco gas in South Carolina today?
Greenville posts the lowest Regular price in South Carolina, $3.279 as of the October 31, 2026 reading — $0.460 under Mt Pleasant, the most expensive of the 7 stations reporting.
How many Costco gas stations are there in South Carolina?
South Carolina has 7 Costco warehouses with a gas station, across 7 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in South Carolina sell diesel?
No — none of the 7 stations in South Carolina 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 South Carolina than in the US?
Yes — the average Costco Regular price in South Carolina is $3.470, $0.805 below the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in South Carolina going up or down?
Down — the average Costco Regular price in South Carolina has eased about $0.253 over the past month, from $3.723 to $3.470.
What time do Costco gas stations in South Carolina open?
The pumps open at 6 a.m. on weekdays at all 7 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.