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Home / Costco Propane Refill
Last verified April 2026

Costco Propane Refill: $13-15 for a 20lb Tank in 2026

$2.80-$3.00
Per gallon (2026)
$13-15
20lb tank refill
$65/yr
Gold Star membership
Call ahead
Not all locations carry it

Costco Propane: What You Need to Know

Price per gallon

$2.80-$3.00/gallon (2026). The cheapest retail propane option in the US. Regional variation is minimal - Costco prices propane as a member benefit.

20lb tank cost

$13-15. At 3.76 gallons filled (80% of 4.7 gal capacity), $2.90 average per gallon = $10.92. The $13-15 range reflects variation by region and member pricing quirks.

Availability

Not every Costco warehouse carries propane. Most fuel station locations do, but some suburban and urban warehouses don't. Always call ahead before making a trip specifically for propane.

Membership required

An active Costco membership is required. Gold Star ($65/year) is sufficient. Business memberships ($65/year) also work. No same-day membership purchase at the fuel station.

Hours

Costco fuel station hours are shorter than warehouse hours - typically open slightly later and close earlier. Check your local warehouse hours before going.

Locator

Use costco.com/warehouse-locations to find your nearest Costco, then call the fuel station department to confirm propane availability.

Membership Break-Even Math

Costco Gold Star membership: $65/year. Average savings vs Tractor Supply ($18.50 avg for 20lb): $4.50/fill. Break-even: 15 fills.

Refills/yearSaved vs TSCNet vs $65 membership
10$45-$20
15$67.5+$2.5
20$90+$25
25$112.5+$47.5

FAQ

Does Costco refill propane tanks?
Yes, most Costco warehouses offer propane refill at the fuel station. Not every location carries it - call ahead. Costco charges $2.80-$3.00/gallon in 2026. An active membership is required.
How much does Costco charge for propane in 2026?
$2.80-$3.00 per gallon, translating to $13-15 for a 20lb tank refill. Costco is consistently the cheapest retail propane option in the US.
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Updated 30 April 2026