Costco Gas Prices in Rancho Cucamonga, California
Rancho Cucamonga · Warehouse #678
11800 4TH ST, Rancho Cucamonga, California 91730-6129
Prices updated: August 12, 2026 at 1:00 AM
Regular
$4.959
PRICE PER GALLON
Press
Premium
$5.399
PRICE PER GALLON
Press
Current gas prices at Costco #678
This Costco gas station is located at 11800 4TH ST in Rancho Cucamonga, California. The latest reported fuel prices are regular at $4.959/gal, premium at $5.399/gal. Prices were last updated on August 12, 2026 at 1:00 AM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$4.959+0.260 (5.5%)
Premium
$5.399+0.300 (5.9%)
DateRegPrem
Aug 12, 1:00 AM$4.959$5.399
Aug 11, 10:00 PM$4.999$5.399
Aug 11, 5:00 PM$5.099$5.499
Aug 9, 6:00 PM$5.199$5.599
Aug 5, 3:00 PM$5.199$5.649
Aug 4, 12:00 AM—$5.649
Aug 3, 11:00 PM$5.199$5.649
Aug 1, 5:00 PM$5.249$5.749
Jul 30, 1:00 AM$5.199$5.699
Jul 27, 4:00 PM$5.199$5.599
Jul 25, 3:00 PM$5.099$5.599
Jul 21, 10:00 PM$5.059$5.599
Jul 21, 4:00 PM$5.059$5.499
Jul 21, 12:00 AM—$5.499
Jul 20, 11:00 PM$4.999$5.399
Jul 20, 5:00 PM$4.959$5.359
Jul 18, 3:00 PM$4.899$5.359
Jul 17, 10:00 PM$4.859$5.259
Jul 17, 5:00 PM$4.859$5.199
Jul 16, 12:00 AM$4.799$5.159
Jul 14, 9:00 PM$4.759$5.159
Jul 13, 6:00 PM$4.699$5.099