Costco Gas Prices in Mount Prospect, Illinois
Mt Prospect · Warehouse #779
999 N ELMHURST RD, Mount Prospect, Illinois 60056-1133
Prices updated: September 3, 2026 at 7:00 PM
Regular
$4.199
PRICE PER GALLON
Press
Premium
$5.299
PRICE PER GALLON
Press
Current gas prices at Costco #779
This Costco gas station is located at 999 N ELMHURST RD in Mount Prospect, Illinois. The latest reported fuel prices are regular at $4.199/gal, premium at $5.299/gal. Prices were last updated on September 3, 2026 at 7:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$4.199+0.100 (2.4%)
Premium
$5.299+0.070 (1.3%)
DateRegPrem
Sep 3, 7:00 PM$4.199$5.299
Sep 3, 2:00 PM$4.159$5.299
Sep 2, 11:00 PM$4.159$5.259
Sep 2, 3:00 PM$4.099$5.199
Sep 1, 9:00 PM$4.099$5.259
Sep 1, 3:00 PM$4.059$5.199
Aug 31, 2:00 PM$4.099$5.199
Aug 30, 2:00 PM$4.099$5.159
Aug 29, 4:00 PM$4.099$5.119
Aug 28, 8:00 AM—$5.119
Aug 28, 7:00 AM$4.099$5.119
Aug 27, 5:00 PM$4.199$5.199
Aug 26, 5:00 PM$4.239$5.249
Aug 26, 12:00 AM$4.249$5.299
Aug 25, 3:00 PM$4.249$5.349
Aug 24, 9:00 PM$4.299$5.399
Aug 23, 3:00 PM$4.399$5.449
Aug 21, 3:00 PM$4.349$5.399
Aug 21, 2:00 AM$4.299$5.349
Aug 20, 3:00 PM$4.249$5.349
Aug 19, 10:00 PM$4.199$5.299
Aug 17, 11:00 PM$4.199$5.249
Aug 17, 4:00 PM$4.199$5.299
Aug 14, 2:00 PM—$5.299
Aug 14, 1:00 PM$4.199$5.299
Aug 13, 3:00 PM$4.099$5.199
Aug 12, 11:00 PM$4.049$5.199
Aug 12, 3:00 PM$4.049$5.149
Aug 12, 3:00 AM—$5.149
Aug 12, 2:00 AM$4.049$5.149
Aug 11, 10:00 PM$4.049$5.099
Aug 10, 6:00 PM—$5.099
Aug 10, 5:00 PM$4.049$5.099
Aug 10, 4:00 PM$4.049$5.159
Aug 9, 3:00 PM$4.049$5.179
Aug 8, 4:00 PM$4.099$5.229
Aug 7, 3:00 PM—$5.229
Aug 7, 2:00 PM$4.099$5.229
Aug 6, 6:00 AM—$5.229
Aug 6, 5:00 AM$4.099$5.229