Costco Mt Prospect Gas Prices – Mount Prospect, IL
- Regular · today
- $4.559▼ −$0.040
- Premium · today
- $5.699▼ −$0.030
USD per gallon · Last updated September 30, 2026 · This station does not sell diesel
999 N Elmhurst Rd, Mount Prospect, IL 60056-1133 · Open in Maps ↗
30-day range
where today sits- Regular$4.559 today · avg $4.468$4.059 low$4.899 high
- Premium$5.699 today · avg $5.583$5.199 low$5.999 high
Price history at Mt Prospect
Last 30 days · USD per gallonView data as table
| Date | Regular | Premium |
|---|---|---|
| Sep 1 | $4.059 | $5.199 |
| Sep 2 | $4.099 | $5.199 |
| Sep 3 | $4.159 | $5.299 |
| Sep 4 | $4.199 | $5.299 |
| Sep 5 | $4.199 | $5.299 |
| Sep 6 | $4.199 | $5.299 |
| Sep 7 | $4.199 | $5.299 |
| Sep 8 | $4.199 | $5.299 |
| Sep 9 | $4.199 | $5.299 |
| Sep 10 | $4.299 | $5.349 |
| Sep 11 | $4.359 | $5.439 |
| Sep 12 | $4.399 | $5.499 |
| Sep 13 | $4.399 | $5.499 |
| Sep 14 | $4.199 | $5.399 |
| Sep 15 | $4.249 | $5.399 |
| Sep 16 | $4.399 | $5.599 |
| Sep 17 | $4.499 | $5.699 |
| Sep 18 | — | — |
| Sep 19 | $4.899 | $5.999 |
| Sep 20 | $4.899 | $5.999 |
| Sep 21 | $4.899 | $5.999 |
| Sep 22 | $4.799 | $5.979 |
| Sep 23 | $4.799 | $5.899 |
| Sep 24 | $4.799 | $5.899 |
| Sep 25 | $4.799 | $5.839 |
| Sep 26 | $4.799 | $5.899 |
| Sep 27 | $4.699 | $5.799 |
| Sep 28 | $4.699 | $5.799 |
| Sep 29 | $4.599 | $5.729 |
| Sep 30 | $4.559 | $5.699 |
Last updated September 30, 2026. Prices are collected once daily and can lag same-day changes at the pump.
Today’s price in context
At $4.559 for Regular, Mt Prospect is tied for the 8th most expensive of 24 Costco gas stations in Illinois today, $0.033 above the Illinois average of $4.526.
Schaumburg, 5.9 mi away, is $0.100 cheaper.
- vs the US average
- $0.047 below, at $4.606
- Premium over Regular
- $1.140 — the Illinois median is $1.105
- Over the last 30 days
- up $0.500
- Days the price changed
- 15 of 29 reported days
- Cheapest day in the window
- September 1, 2026, at $4.059
- 15-gallon fill
- $68.39, $7.50 more than at the 30-day low
- Nearest cheaper station
- Schaumburg — 5.9 mi
Mt Prospect is located at 999 N Elmhurst Rd, Mount Prospect, IL 60056-1133, in Illinois. The gas station sits in the warehouse parking lot and is open to Costco members, selling Regular and Premium — this location does not sell diesel. Gas station hours are 6 a.m. – 10 p.m. on weekdays, 6 a.m. – 8:30 p.m. on Saturdays and 6 a.m. – 7:30 p.m. on Sundays, in local time.
Station details
Mount Prospect Gas station hours
- Mon–Fri
- 6 a.m. – 10 p.m.
- Saturday
- 6 a.m. – 8:30 p.m.
- Sunday
- 6 a.m. – 7:30 p.m.
Mount Prospect Warehouse hours
- Mon–Fri
- 10 a.m. – 8:30 p.m.
- Saturday
- 9:30 a.m. – 7 p.m.
- Sunday
- 10 a.m. – 6 p.m.
Costco gas near Mt Prospect
- 1SchaumburgSchaumburg, IL · 5.9 mi$4.459Regular
- 2GlenviewGlenview, IL · 6.0 mi$4.699Regular
- 3NilesNiles, IL · 9.2 mi$4.499Regular
- 4MettawaMettawa, IL · 10.8 mi$4.549Regular
- 5Lake ZurichLake Zurich, IL · 10.9 mi$4.499Regular
Distances are straight-line. Prices across the border are shown in that country’s units (¢ per litre).
Cities near Mount Prospect
- Costco gas prices Schaumburg · IL · 6 mi$4.459
- Costco gas prices Glenview · IL · 6 mi$4.699
- Costco gas prices Niles · IL · 9 mi$4.499
- Costco gas prices Mettawa · IL · 11 mi$4.549
- Costco gas prices Lake Zurich · IL · 11 mi$4.499
- Costco gas prices Melrose Park · IL · 13 mi$4.499
- Costco gas prices Bloomingdale · IL · 14 mi$4.199
- Costco gas prices Oak Brook · IL · 17 mi$4.299
At this location
- Warehouse opened
- October 2004
- Warehouse phone
- (847) 660-2000
- Pumps open before the warehouse
- 4 hours on weekdays
Also at this warehouse: a food court, a pharmacy, an optical department and a tire center.
Costco publishes one number per warehouse; there is no separate line for the gas station.
Frequently asked questions
How much is gas at Costco Mt Prospect today?
As of the September 30, 2026 reading: Regular $4.559 and Premium $5.699 per gallon. Prices are collected once a day, so the pump can differ.
What time does the Costco Mt Prospect gas station open?
The pumps are open 6 a.m. – 10 p.m. weekdays, 6 a.m. – 8:30 p.m. Saturdays and 6 a.m. – 7:30 p.m. Sundays, in local time. The pumps open 4 hours before the warehouse on weekdays.
Does the Costco Mt Prospect gas station sell diesel?
No — this station sells Regular and Premium, and has reported no diesel price in the last 30 days.
Is Costco Mt Prospect cheaper than the average Costco station in Illinois?
No — at $4.559, Regular here is $0.033 above the Illinois Costco average of $4.526.
Where is the Costco Mt Prospect gas station?
At 999 N Elmhurst Rd, Mount Prospect, IL 60056-1133. It sits in the Costco warehouse parking lot and is open to members only.
Do you need a Costco membership to buy gas?
Yes — a Gold Star, Executive or Business membership card has to be scanned at the pump before it will dispense, though a Costco Shop Card also works for non-members.
What payment methods does the Costco gas station accept?
Visa, PIN debit and the Costco Shop Card; US Costco fuel pumps take no cash and no Mastercard, American Express or Discover.
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