Costco Gas Prices in Colorado
- Regular avg
- $3.835▼ −$0.049
- Premium avg
- $4.530▼ −$0.039
- Diesel avg
- $6.424▼ −$0.015
- Stations reporting
- 15
Avg of 15 stations · per gallon · ▲▼ change since the previous day
Average price history in Colorado
Last 30 days · per gallonRegular: $3.588 on Oct 2 to $3.835 on Oct 31, low $3.588, high $4.004. Premium: $4.228 on Oct 2 to $4.530 on Oct 31, low $4.228, high $4.701. Diesel: $6.134 on Oct 2 to $6.424 on Oct 31, low $6.099, high $6.479.
Costco gas in Colorado today
Costco gas stations in Colorado include 15 warehouses across 13 cities.
Today’s Regular prices span $0.730 across the 15 stations reporting, from the cheapest to the most expensive.
2 stations are tied at today’s lowest price.
Costco Regular prices in Colorado have climbed about $0.243 over the past month, from $3.592 a month ago.
The furthest any single station moved was NE Denver, up $0.480.
- Cheapest today
- Aurora — $3.669
- Most expensive today
- Gypsum — $4.399
- vs the US average
- $0.440 below, at $4.275
- Diesel
- sold at 2 of 15 stations
- EV charging
- NE Denver
- Weekday opening
- 6 a.m. at all 15 stations
- Newest warehouse
- NE Denver — July 2023
- Oldest warehouse
- Aurora — November 1990
Colorado stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | AuroraAurora | Aurora | $3.669 |
| 2 | NE DenverDenver | Denver | $3.669 |
| 3 | Westminster COWestminster | Westminster | $3.699 |
| 4 | ThorntonThornton | Thornton | $3.699 |
| 5 | LongmontLongmont | Longmont | $3.739 |
| 6 | SW DenverLittleton | Littleton | $3.759 |
| 7 | ArvadaArvada | Arvada | $3.759 |
| 8 | SuperiorSuperior | Superior | $3.799 |
| 9 | E Colorado SpringsColorado Springs | Colorado Springs | $3.799 |
| 10 | SheridanSheridan | Sheridan | $3.799 |
| 11 | W Colorado SpringsColorado Springs | Colorado Springs | $3.799 |
| 12 | Douglas CountyLittleton | Littleton | $3.939 |
| 13 | ParkerParker | Parker | $3.999 |
| 14 | TimnathTimnath | Timnath | $3.999 |
| 15 | GypsumGypsum | Gypsum | $4.399 |
Fuel grades at Costco in Colorado
All 15 Costco gas stations in Colorado sell Kirkland Signature fuel, which is Top Tier certified. Diesel is sold at 2 of the 15.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 15 | $3.835 | Aurora $3.669 |
| Premium | 15 | $4.530 | Aurora $4.349 |
| Diesel | 2 | $6.424 | Timnath $6.189 |
Regular
all 15 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 15 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.
Diesel
2 of 15 stationsKirkland Signature diesel, ultra-low-sulfur like all on-road diesel in the US.
- Costco says its diesel additives clean deposits from fuel injectors, keep new ones from forming and help reduce engine wear.
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 Colorado good quality?
Costco does not sell a refiner’s brand. Every pump in Colorado 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 Colorado
On weekdays the earliest pumps in Colorado come on at 6 a.m. (Arvada) and the last ones switch off at 10 p.m. (Arvada). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Arvada | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Aurora | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Douglas County | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| E Colorado Springs | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Gypsum | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Longmont | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 7 a.m. – 7 p.m. |
| NE Denver | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Parker | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Sheridan | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Superior | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| SW Denver | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Thornton | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Timnath | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| W Colorado Springs | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Westminster CO | 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 Colorado
Every Costco gas station sits in a warehouse parking lot, so a fill-up can share a trip with the rest of the list. EV charging is on site at one.
- Food court
- 15 of 15
- Pharmacy
- 15 of 15
- Optical
- 15 of 15
- Tire center
- 15 of 15
- Car wash
- 0 of 15
- EV charging
- 1 of 15
EV charging: NE Denver.
How Costco gas works in Colorado
Bring your card. The pump asks for an active Costco membership card before it starts, at all 15 gas stations in Colorado. 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 Colorado can differ. Today the regular average here is $3.835. 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.
Colorado prices by city
- Arvada · 1 station$3.759
- Aurora · 1 station$3.669
- Colorado Springs · 2 stations$3.799
- Denver · 1 station$3.669
- Gypsum · 1 station$4.399
- Littleton · 2 stations$3.849
- Longmont · 1 station$3.739
- Parker · 1 station$3.999
- Sheridan · 1 station$3.799
- Superior · 1 station$3.799
- Thornton · 1 station$3.699
- Timnath · 1 station$3.999
- Westminster · 1 station$3.699
States near Colorado
- Costco gas prices New Mexico · 3 stations$3.712
- Costco gas prices Utah · 16 stations$4.283
- Costco gas prices Nebraska · 4 stations$3.884
- Costco gas prices South Dakota · 1 station$3.899
- Costco gas prices Kansas · 4 stations$3.704
- Costco gas prices Oklahoma · 4 stations$3.496
Costco gas in Colorado: common questions
Where is the cheapest Costco gas in Colorado today?
Aurora posts the lowest Regular price in Colorado, $3.669 as of the October 31, 2026 reading — $0.730 under Gypsum, the most expensive of the 15 stations reporting. It shares that price with 1 other station.
How many Costco gas stations are there in Colorado?
Colorado has 15 Costco warehouses with a gas station, across 13 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in Colorado sell diesel?
Diesel is sold at 2 of 15 stations in Colorado. Each station page lists the grades that warehouse has actually posted a price for in the last 30 days.
Is Costco gas cheaper in Colorado than in the US?
Yes — the average Costco Regular price in Colorado is $3.835, $0.440 below the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Colorado going up or down?
Up — the average Costco Regular price in Colorado has climbed about $0.243 over the past month, from $3.592 to $3.835.
What time do Costco gas stations in Colorado open?
The pumps open at 6 a.m. on weekdays at all 15 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.