Costco Gas PriceNow

Costco gas prices in Saint Louis

Saint Louis stations

Costco University City8685 Olive Blvd
$3.499
Costco S St Louis4200 Rusty Rd
$3.589

Regular per gallon · updated July 22, 2026

Saint Louis has 2 Costco gas stations, and today the cheapest regular among them is $3.499/gal at Costco University City. The board compares them side by side — tap a station for its full price history and hours. Saint Louis Costco regular prices have climbed about $0.165 per gallon over the past month, from $3.379 to $3.544. Premium is up $0.190 over the same stretch, now at $4.149.

30-day price trend

Regular$3.544Premium$4.149
3.203.403.603.804.004.20Jun 23Jun 30Jul 8Jul 15Jul 22$4.149$3.544
Average posted price across the 2 Costco stations in Saint Louis, past 30 days ($/gal).
View price history as a table
DateRegularPremium
July 22, 2026$3.544$4.149
July 21, 2026$3.529$4.149
July 20, 2026$3.529$4.149
July 19, 2026$3.479$4.124
July 18, 2026$3.429$4.089
July 17, 2026$3.379$4.049
July 16, 2026$3.339$4.019
July 15, 2026$3.339$3.989
July 14, 2026$3.339$3.989
July 13, 2026$3.339$3.989
July 12, 2026$3.349$3.999
July 11, 2026$3.349$3.999
July 10, 2026$3.349$3.999
July 9, 2026$3.349$3.974
July 8, 2026$3.349$3.944
July 7, 2026$3.299$3.949
July 6, 2026$3.299$3.949
July 5, 2026$3.349$3.974
July 4, 2026$3.349$3.949
July 3, 2026$3.299$3.914
July 2, 2026$3.269$3.889
July 1, 2026$3.329$3.869
June 30, 2026$3.284$3.844
June 29, 2026$3.289$3.849
June 28, 2026$3.289$3.849
June 27, 2026$3.289$3.899
June 26, 2026$3.339$3.899
June 25, 2026$3.339$3.899
June 24, 2026$3.339$3.944
June 23, 2026$3.379$3.959

All stations in Saint Louis

All 2 stations, sorted by regular price from lowest to highest, comparing every fuel. Prices in $/gal.

RankStationRegularPremium
1Costco University CitySaint Louis$3.499$4.099
2Costco S St LouisSaint Louis$3.589$4.199