Costco Gas Prices in Thornton, Colorado
Thornton · Warehouse #629
16375 N. WASHINGTON ST, Thornton, Colorado 80023-8907
Prices updated: August 12, 2026 at 11:00 PM
Regular
$3.499
PRICE PER GALLON
Press
Premium
$4.099
PRICE PER GALLON
Press
Current gas prices at Costco #629
This Costco gas station is located at 16375 N. WASHINGTON ST in Thornton, Colorado. The latest reported fuel prices are regular at $3.499/gal, premium at $4.099/gal. Prices were last updated on August 12, 2026 at 11:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$3.499+0.100 (2.9%)
Premium
$4.099no change
DateRegPrem
Aug 12, 11:00 PM$3.499$4.099
Aug 12, 3:00 PM$3.469$4.069
Aug 10, 4:00 PM$3.599$4.199
Aug 9, 3:00 AM—$4.199
Aug 9, 2:00 AM$3.599$4.199
Aug 7, 3:00 PM$3.799$4.399
Aug 5, 9:00 PM$3.849$4.449
Aug 5, 5:00 PM$3.819$4.479
Aug 4, 4:00 PM$3.849$4.499
Aug 1, 10:00 PM$3.799$4.499
Jul 31, 10:00 PM$3.749$4.399
Jul 30, 9:00 PM$3.699$4.299
Jul 30, 3:00 PM$3.699$4.359
Jul 29, 3:00 PM$3.799$4.449
Jul 28, 4:00 PM$3.849$4.499
Jul 28, 2:00 AM$3.859$4.559
Jul 27, 3:00 PM$3.859$4.599
Jul 25, 3:00 PM$3.799$4.599
Jul 24, 4:00 PM$3.699$4.569
Jul 23, 3:00 PM$3.599$4.469
Jul 23, 11:00 AM—$4.469
Jul 23, 10:00 AM$3.599$4.469
Jul 22, 11:00 PM$3.699$4.469
Jul 22, 4:00 PM$3.699$4.399
Jul 21, 10:00 PM$3.699$4.329
Jul 20, 6:00 PM—$4.329
Jul 20, 5:00 PM$3.699$4.329
Jul 19, 2:00 AM—$4.329
Jul 19, 1:00 AM$3.699$4.329
Jul 18, 4:00 PM$3.639$4.299
Jul 17, 10:00 PM$3.539$4.259
Jul 17, 3:00 PM$3.499$4.199
Jul 16, 10:00 PM$3.439$4.099
Jul 16, 2:00 PM$3.399$4.099