Propane in Knox City

3 propane locations in Knox City, TX.

Of the 3 propane locations listed in Knox City, 1 fills tanks by the gallon, 2 offer tank exchange, and 1 dispenses autogas for vehicles.

Nearby cities in Texas with listed propane: Haskell (4 locations, about 18 mi), Aspermont (3 locations, about 31 mi) and Stamford (4 locations, about 32 mi).

3 locations

Penman Conoco Service

609 E Main St, Knox City, TX

Refill · Autogas

Tank exchange in Knox City (2)

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.

Dollar General #17760

1204 E MAIN ST, Knox City, TX 79529

Tank Exchange · Blue Rhino

Directions Call store

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

Lawrence Bros. #4765 (Mal Ent)

206 North Main, Knox City, TX 79529

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 An out-of-date cylinder cannot legally be refilled.