Decatur, Illinois Gas Price Today

Today's gas price in Decatur, Illinois is $3.725 per gallon for regular unleaded fuel. Midgrade gasoline averages $4.269, premium fuel is $4.792, and diesel is $4.675 per gallon. These local prices help you find gas prices near me updated every morning.

Decatur's regular gas price of $3.725 per gallon is $0.250 per gallon below the Illinois state average of $3.975 per gallon. Local price differences reflect competition between stations, fuel delivery costs, and proximity to regional supply terminals in your area.

Decatur's price of $3.725 per gallon is $0.065 per gallon below the national average of $3.790 per gallon. This price gap is influenced by Illinois's state fuel taxes, regional refining capacity, and the geographic location of the metro area itself.