Costco Gas Prices in Thornton, Colorado
Thornton · Warehouse #629
16375 N. WASHINGTON ST, Thornton, Colorado 80023-8907
Prices updated: September 4, 2026 at 3:00 AM
Regular
$3.799
PRICE PER GALLON
Press
Premium
$4.459
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 $3.799/gal, premium at $4.459/gal. Prices were last updated on September 4, 2026 at 3:00 AM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$3.799−0.020 (0.5%)
Premium
$4.459−0.020 (0.4%)
DateRegPrem
Sep 4, 3:00 AM$3.799$4.459
Sep 4, 12:00 AM$3.859$4.499
Sep 3, 9:00 PM$3.859$4.459
Sep 3, 4:00 PM$3.799$4.399
Sep 2, 10:00 PM$3.859$4.459
Sep 2, 4:00 PM$3.759$4.359
Aug 31, 4:00 PM$3.859$4.459
Aug 29, 5:00 PM$3.899$4.499
Aug 28, 8:00 PM$3.899$4.599
Aug 28, 3:00 PM$3.969$4.699
Aug 27, 9:00 PM$3.999$4.759
Aug 27, 3:00 PM$4.099$4.759
Aug 26, 11:00 PM$4.179$4.759
Aug 26, 4:00 PM$4.179$4.799
Aug 25, 10:00 PM$4.149$4.849
Aug 25, 4:00 PM$4.149$4.899
Aug 23, 3:00 PM$4.099$4.849
Aug 21, 9:00 PM$3.999$4.849
Aug 21, 5:00 PM$3.959$4.759
Aug 20, 3:00 PM$3.859$4.699
Aug 19, 10:00 PM$3.859$4.659
Aug 19, 4:00 PM$3.799$4.599
Aug 18, 10:00 PM$3.799$4.559
Aug 18, 3:00 PM$3.759$4.499
Aug 17, 2:00 PM$3.759$4.459
Aug 16, 5:00 PM$3.699$4.399
Aug 14, 4:00 PM$3.699$4.299
Aug 13, 9:00 PM$3.699$4.199
Aug 13, 7:00 PM$3.599$4.099
Aug 13, 3:00 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