Costco Gas Prices in Illinois
- Regular avg
- $4.625▼ −$0.055
- Premium avg
- $5.749▼ −$0.065
- Stations reporting
- 24
Avg of 24 stations · per gallon · ▲▼ change since the previous day
Average price history in Illinois
Last 30 days · per gallonRegular: $4.499 on Oct 2 to $4.625 on Oct 31, low $4.452, high $4.802. Premium: $5.651 on Oct 2 to $5.749 on Oct 31, low $5.582, high $5.932.
Costco gas in Illinois today
Costco gas stations in Illinois include 24 warehouses across 21 cities.
Today’s Regular prices span $0.920 across the 24 stations reporting, from the cheapest to the most expensive.
Costco Regular prices in Illinois have climbed about $0.127 over the past month, from $4.499 a month ago.
The furthest any single station moved was Orland Park, up $0.460.
- Cheapest today
- Loves Park — $4.279
- Most expensive today
- Lincoln Park — $5.199
- vs the US average
- $0.350 above, at $4.275
- Diesel
- sold at none of the 24 stations
- EV charging
- Lincoln Park
- Weekday opening
- 6 a.m. at all 24 stations
- Newest warehouse
- Yorkville — November 2025
- Oldest warehouse
- Oak Brook — November 1998
Illinois stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | Loves ParkLoves Park | Loves Park | $4.279 |
| 2 | Lake In The HillsLake In The Hills | Lake In The Hills | $4.299 |
| 3 | ChampaignChampaign | Champaign | $4.299 |
| 4 | BloomingdaleBloomingdale | Bloomingdale | $4.349 |
| 5 | Bedford Park Business CenterChicago | Chicago | $4.459 |
| 6 | PlainfieldPlainfield | Plainfield | $4.459 |
| 7 | East PeoriaEast Peoria | East Peoria | $4.549 |
| 8 | YorkvilleYorkville | Yorkville | $4.549 |
| 9 | Melrose ParkMelrose Park | Melrose Park | $4.579 |
| 10 | North Riverside ILNorth Riverside | North Riverside | $4.599 |
| 11 | SchaumburgSchaumburg | Schaumburg | $4.649 |
| 12 | Lake ZurichLake Zurich | Lake Zurich | $4.659 |
| 13 | NE NapervilleNaperville | Naperville | $4.659 |
| 14 | NilesNiles | Niles | $4.699 |
| 15 | NapervilleNaperville | Naperville | $4.699 |
| 16 | Mt ProspectMount Prospect | Mount Prospect | $4.699 |
| 17 | MettawaMettawa | Mettawa | $4.699 |
| 18 | Oak BrookOak Brook | Oak Brook | $4.729 |
| 19 | St CharlesSaint Charles | Saint Charles | $4.729 |
| 20 | Orland ParkOrland Park | Orland Park | $4.739 |
| 21 | GlenviewGlenview | Glenview | $4.749 |
| 22 | BolingbrookBolingbrook | Bolingbrook | $4.779 |
| 23 | Chicago South LoopChicago | Chicago | $4.899 |
| 24 | Lincoln ParkChicago | Chicago | $5.199 |
Fuel grades at Costco in Illinois
All 24 Costco gas stations in Illinois 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 | 24 | $4.625 | Loves Park $4.279 |
| Premium | 24 | $5.749 | Loves Park $5.099 |
Regular
all 24 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 24 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 Illinois good quality?
Costco does not sell a refiner’s brand. Every pump in Illinois 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 Illinois
On weekdays the earliest pumps in Illinois come on at 6 a.m. (Bedford Park Business Center) and the last ones switch off at 10 p.m. (Bedford Park Business Center). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Bedford Park Business Center | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Bloomingdale | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Bolingbrook | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Champaign | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Chicago South Loop | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| East Peoria | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Glenview | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Lake In The Hills | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Lake Zurich | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Lincoln Park | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Loves Park | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Melrose Park | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Mettawa | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Mt Prospect | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Naperville | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| NE Naperville | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Niles | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| North Riverside IL | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Oak Brook | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Orland Park | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Plainfield | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Schaumburg | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| St Charles | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
| Yorkville | 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 Illinois
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
- 23 of 24
- Pharmacy
- 23 of 24
- Optical
- 23 of 24
- Tire center
- 23 of 24
- Car wash
- 0 of 24
- EV charging
- 1 of 24
EV charging: Lincoln Park.
How Costco gas works in Illinois
Bring your card. The pump asks for an active Costco membership card before it starts, at all 24 gas stations in Illinois. 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 Illinois can differ. Today the regular average here is $4.625. 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.
Illinois prices by city
- Bloomingdale · 1 station$4.349
- Bolingbrook · 1 station$4.779
- Champaign · 1 station$4.299
- Chicago · 3 stations$4.852
- East Peoria · 1 station$4.549
- Glenview · 1 station$4.749
- Lake In The Hills · 1 station$4.299
- Lake Zurich · 1 station$4.659
- Loves Park · 1 station$4.279
- Melrose Park · 1 station$4.579
- Mettawa · 1 station$4.699
- Mount Prospect · 1 station$4.699
- Naperville · 2 stations$4.679
- Niles · 1 station$4.699
- North Riverside · 1 station$4.599
- Oak Brook · 1 station$4.729
- Orland Park · 1 station$4.739
- Plainfield · 1 station$4.459
- Saint Charles · 1 station$4.729
- Schaumburg · 1 station$4.649
- Yorkville · 1 station$4.549
States near Illinois
- Costco gas prices Wisconsin · 12 stations$4.065
- Costco gas prices Indiana · 9 stations$3.719
- Costco gas prices Michigan · 18 stations$4.385
- Costco gas prices Iowa · 4 stations$3.842
- Costco gas prices Ohio · 13 stations$3.912
- Costco gas prices Kentucky · 4 stations$3.852
Costco gas in Illinois: common questions
Where is the cheapest Costco gas in Illinois today?
Loves Park posts the lowest Regular price in Illinois, $4.279 as of the October 31, 2026 reading — $0.920 under Lincoln Park, the most expensive of the 24 stations reporting.
How many Costco gas stations are there in Illinois?
Illinois has 24 Costco warehouses with a gas station, across 21 cities, and all of them reported a price in the last 30 days.
Which Costco gas stations in Illinois sell diesel?
No — none of the 24 stations in Illinois 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 Illinois than in the US?
No — the average Costco Regular price in Illinois is $4.625, $0.350 above the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Illinois going up or down?
Up — the average Costco Regular price in Illinois has climbed about $0.127 over the past month, from $4.499 to $4.625.
What time do Costco gas stations in Illinois open?
The pumps open at 6 a.m. on weekdays at all 24 stations, ahead of the warehouse doors. Each station page carries its own full week, in local time.