Gas prices in St. Louis, MO

About gas prices in St. Louis, MO

Saint Louis benefits from local refining: Phillips 66's Wood River refinery (just across the Mississippi in Roxana IL) supplies roughly 350,000 barrels per day to the metro. Pipeline access via Magellan and Marathon adds supply flexibility. Missouri state gas tax is moderate at around 22 cents per gallon. Conventional gasoline keeps supply costs lower than coastal markets. Saint Louis typically runs 15 to 25 cents below the national average. Drivers across the metro see meaningful neighborhood variation: stations in west St Louis suburbs (Chesterfield, Wildwood, O'Fallon) and Illinois-side communities typically run 5 to 15 cents below downtown St Louis. Warehouse club density along the I-270 outerbelt is high.