Costco Propane Price Per Gallon Refill

Costco propane refill at member-station locations is typically the lowest per-gallon retail propane price in most US markets. This page covers the pricing band, where to find Costco propane refill, and the math against Blue Rhino exchange.

Where Costco propane is available

Costco offers propane refill at a subset of US warehouse locations, primarily those with attached Costco Tire Centers or Costco Business locations that have the on-site filling infrastructure. Not every Costco has propane; the network density varies by region. The Costco warehouse locator at costco.com/warehouse-locations indicates whether a specific location has propane refill. Roughly one-third to one-half of US Costco warehouses have propane refill capability, with higher density in regions where consumer propane usage is higher (Texas, the Southeast, California, the Pacific Northwest).

A current Costco membership is required for the propane refill, in line with Costco's standard member-only pricing model. The Gold Star ($65 per year) or Executive ($130 per year) memberships both grant access. The propane purchase counts toward the standard 2% Executive Member reward, which slightly reduces the effective per-gallon cost for Executive members.

Why Costco is the per-gallon winner

Costco propane refill consistently runs $0.50 to $1.50 per gallon below typical Blue Rhino and AmeriGas exchange pricing, and often below U-Haul refill pricing as well. The reasons are structural to Costco's business model.

• Volume buying: Costco buys propane from its supplier (typically the regional bulk propane distributor) on a wholesale basis at volumes that qualify for commercial pricing tiers, then resells at limited mark-up. The mark-up is structural Costco policy: typically 11 to 15% above cost, far below the propane retail standard.
• No delivery layer: The Costco propane is delivered to the warehouse's on-site bulk tank, not to the end customer's home. The bobtail delivery cost spreads across thousands of gallons rather than a 400-gallon residential fill.
• Self-service or attendant model: Costco propane refill is typically attendant-operated (an attendant fills the customer's tank on a calibrated scale) at warehouse cost rather than convenience-store retail cost.
• Full 20lb fill: Costco refills the cylinder to the full 20lb capacity (4.7 gallons of propane), not the 15lb (3.6 gallons) that Blue Rhino and AmeriGas exchange cylinders carry. That alone is roughly a 30% increase in actual propane per fill.
• Member-only model: Costco does not need to advertise to attract customers; the membership base is the customer base. Marketing cost per gallon sold is effectively zero, unlike Blue Rhino which funds substantial brand marketing at retail partners.

Costco refill vs Blue Rhino exchange

A side-by-side comparison for a typical 20lb tank:

Pricing as observed in early 2026 across multiple US markets. Actual prices vary by region, retailer, and weekly wholesale market. Costco pricing observed at a range of warehouse locations and member-reported pricing.

Membership economics

For a customer using propane for a single backyard grill (2 to 4 fills per year), the savings from Costco refill versus Blue Rhino exchange are roughly $30 to $80 per year. That alone does not justify a $65 Gold Star membership, though Costco members typically save the membership cost back many times over on other purchases. For a heavy propane user (a homeowner with a propane patio heater, multiple grills, or a small propane-fired appliance), the annual saving rises proportionally.

For a household running propane for both grill use and a mid-size patio heater operation (8 to 15 tank fills per year), Costco propane savings against exchange can reach $120 to $250 per year, which on its own pays back the membership cost. For Executive Member households the additional 2% reward on the propane spend slightly improves the math.

The operational caveat

Costco propane refill is operationally less convenient than Blue Rhino exchange. The refill model means the customer brings the tank, waits for the attendant, the tank is filled on a scale (taking three to seven minutes of attendant time), and the customer pays at the refilling station or at the warehouse register. Blue Rhino exchange is essentially instant: drop empty, grab full, pay at the standard register. For customers who value speed over per-gallon optimisation, exchange wins.

The refill model also requires the cylinder to be in date for DOT requalification (every 12 years from manufacture, then every 5 years thereafter). Out-of- date cylinders cannot be refilled and are returned to the customer. Blue Rhino exchange does not have this problem because the exchange operator handles requalification centrally; the customer can drop a long-past-date cylinder at Blue Rhino exchange and receive a current one.

What Costco propane is not

Costco does not offer residential bulk propane delivery, tank lease, or commercial accounts. The Costco propane business is exclusively the refill of customer-provided consumer cylinders (typically 20lb grill tanks, with some warehouses also handling 30lb and 40lb cylinders for RV use). For residential bulk delivery, the customer needs to contract with AmeriGas, Suburban, Ferrellgas, or an independent local dealer. The per-gallon rates on residential bulk delivery (typically $2.67 ish) are dramatically lower than even Costco refill, because the bulk delivery channel amortises cost across hundreds of gallons per fill.

Buying a new propane tank at Costco

Separate from the refill service, Costco sells the empty cylinder itself. The standard unit is a Flame King 20lb steel tank (item #261685) with a Type 1 OPD overfill-protection valve and a built-in fuel gauge, sold empty. It is regularly priced around $40 to $45, and Costco periodically runs it down toward $30 as an in-warehouse promotion. Some warehouses also carry a 30lb Flame King cylinder for RV and larger-appliance use. Prices vary by warehouse and week; the figures here reflect the in-warehouse range observed across US warehouses in 2026.

Buying the tank outright and refilling it at the Costco station is the cheapest long-run path for a regular griller: a roughly $40 tank plus $11.75 to $15.51 refills beats repeatedly paying the exchange premium, and you keep the full 4.7-gallon fill each time rather than the 15lb (3.6-gallon) fill an exchange cylinder carries.

Related

• AmeriGas propane price per gallon
• Ferrellgas and Blue Rhino price
• Suburban Propane price
• Camping propane price (small cylinders)
• Wholesale vs retail spread

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