O'Fallon, Missouri Gas Price Today

Today's gas price in O'Fallon, Missouri is $3.540 per gallon for regular unleaded fuel. Midgrade gasoline averages $4.000, premium fuel is $4.354, and diesel is $4.071 per gallon. These local prices help you find gas prices near me updated every morning.

O'Fallon's regular gas price of $3.540 per gallon is $0.136 per gallon below the Missouri state average of $3.676 per gallon. Local price differences reflect competition between stations, fuel delivery costs, and proximity to regional supply terminals in your area.

O'Fallon's price of $3.540 per gallon is $0.512 per gallon below the national average of $4.052 per gallon. This price gap is influenced by Missouri's state fuel taxes, regional refining capacity, and the geographic location of the metro area itself.