Propane in St. Louis (Unicorp)

3 propane locations in St. Louis (Unicorp), MO.

Of the 3 propane locations listed in St. Louis (Unicorp), 3 offer tank exchange.

Nearby cities in Missouri with listed propane: St Louis (45 locations, about 1 mi), Saint Louis (17 locations, about 1 mi) and Kirkwood (4 locations, about 6 mi).

3 locations

Tank exchange in St. Louis (Unicorp) (3)

Stores listed by the exchange brands' own retailer locators as carrying swap cages for grill-size cylinders. A listing is not a stock check, so call ahead if you need a tank at a particular hour.

Petro Mart #4212

4317 Butler Hill Road, St. Louis (Unicorp), MO 63128

Tank Exchange · Blue Rhino

Directions Call store

Listed in Blue Rhino's retailer locator, checked Sep 27, 2026.

Petro Mart #4215

10866 Lilac Avenue, St. Louis (Unicorp), MO 63137

Tank Exchange · Blue Rhino

Directions Call store

Listed in Blue Rhino's retailer locator, checked Sep 27, 2026.

Petro Mart #4226

4205 Butler Hill Road, St. Louis (Unicorp), MO 63129

Tank Exchange · Blue Rhino

Directions Call store

Listed in Blue Rhino's retailer locator, checked Sep 27, 2026.

Before you go

Refill vs. Tank Exchange: What You Actually Get

Exchange trades a tank; refill sells you gas by the gallon. The difference in what you get home with is larger than most people expect.

When Does a Propane Tank Expire?

Twelve years from the date stamped on the collar, then a requalification interval that depends on the test method. An out-of-date cylinder cannot legally be refilled.