Costco Gas in Thornton, CO
1 station in Thornton, Colorado
Costco Gas Hours in Thornton
Thornton has 1 Costco gas station. Weekday hours are typically 6 AM to 10 PM. Sunday hours are 6 AM–7:30 PM. Membership is required at the pump. Costco gas is TOP TIER™ certified, meeting enhanced detergent standards recommended by most major automakers.
Hours last checked August 20, 2026. How we check
Costco gas in Thornton: FAQ
How many Costco gas stations are in Thornton, CO?
Thornton has 1 Costco gas station: 16375 Washington Street.
What time does Costco gas open in Thornton?
On weekdays, Costco gas in Thornton opens at 6 AM and closes at 10 PM. Hours last checked August 20, 2026.
What are Costco gas hours on Sunday in Thornton?
On Sundays, Costco gas in Thornton is open 6 AM–7:30 PM.
Do I need a membership to buy Costco gas in Thornton?
Yes. An active Costco membership is required at the pump.