Costco Gas Prices in South San Francisco, CA
- Regular avg
- $5.479▼ −$0.020
- Premium avg
- $5.919▼ −$0.040
- Stations reporting
- 2
Avg of 2 stations · per gallon · ▲▼ change since the previous day
Price history in South San Francisco
Last 30 days · per gallonRegular: $6.179 on Oct 2 to $5.479 on Oct 31, low $5.479, high $6.209. Premium: $6.529 on Oct 2 to $5.919 on Oct 31, low $5.919, high $6.599.
Costco gas in South San Francisco today
South San Francisco has 2 Costco gas stations: El Camino at 1600 El Camino Real and S San Francisco at 451 S Airport Blvd.
Today’s Regular prices span $0.040 across the 2 stations reporting, from the cheapest to the most expensive.
Costco Regular prices in South San Francisco have eased about $0.730 over the past month, from $6.209 a month ago.
The furthest any single station moved was S San Francisco, down $0.760.
- Cheapest today
- El Camino — $5.459
- Most expensive today
- S San Francisco — $5.499
- vs the California average
- $0.026 above, at $5.453
- Diesel
- sold at none of the 2 stations
Costco gas stations in South San Francisco
Fuel grades at Costco in South San Francisco
All 2 Costco gas stations in South San Francisco 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 | 2 | $5.479 | El Camino $5.459 |
| Premium | 2 | $5.919 | El Camino $5.899 |
Regular
all 2 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 2 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 San Francisco good quality?
Costco does not sell a refiner’s brand. Every pump in South San Francisco 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 San Francisco
On weekdays the earliest pumps in South San Francisco come on at 6 a.m. (El Camino) and the last ones switch off at 10 p.m. (El Camino). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| El Camino | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 8 p.m. |
| S San Francisco | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 8 p.m. |
What else is at Costco warehouses in South San Francisco
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
- 2 of 2
- Pharmacy
- 2 of 2
- Optical
- 2 of 2
- Tire center
- 2 of 2
- Car wash
- 0 of 2
- EV charging
- 0 of 2
How Costco gas works in South San Francisco
Bring your card. The pump asks for an active Costco membership card before it starts, at all 2 gas stations in South San Francisco. 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 San Francisco can differ. Today the regular average here is $5.479. 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.
Cities near South San Francisco
- Costco gas prices San Leandro · CA · 14 mi$5.499
- Costco gas prices Redwood City · CA · 17 mi$5.579
- Costco gas prices Richmond · CA · 18 mi$5.499
- Costco gas prices Hayward · CA · 18 mi$5.349
- Costco gas prices Newark · CA · 25 mi$5.299
- Costco gas prices Danville · CA · 26 mi$5.449
- Costco gas prices Fremont · CA · 27 mi$5.299
- Costco gas prices Pleasanton · CA · 28 mi$5.399
States near California
- Costco gas prices Nevada · 9 stations$4.752
- Costco gas prices Arizona · 20 stations$4.083
- Costco gas prices Utah · 16 stations$4.283
- Costco gas prices Idaho · 7 stations$4.220
Costco gas in South San Francisco: common questions
Where is the cheapest Costco gas in South San Francisco today?
El Camino posts the lowest Regular price in South San Francisco, $5.459 as of the October 31, 2026 reading — $0.040 under S San Francisco, the most expensive of the 2 stations reporting.
How many Costco gas stations are there in South San Francisco?
South San Francisco has 2 Costco warehouses with a gas station, and both of them reported a price in the last 30 days.
Does any Costco gas station in South San Francisco sell diesel?
No — none of the 2 stations in South San Francisco 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 San Francisco than in California?
No — the average Costco Regular price in South San Francisco is $5.479, $0.026 above the California average of $5.453 as of the October 31, 2026 reading.
Are Costco gas prices in South San Francisco going up or down?
Down — the average Costco Regular price in South San Francisco has eased about $0.730 over the past month, from $6.209 to $5.479.