Why gas prices are higher in Illinois than in Missouri and Indiana – Peoria Journal Star

Illinoisans pay the second-highest gas taxes in the nation after California, according to the American Petroleum Institute — 78 cents per gallon before figuring in any local taxes to the Golden State's 86.55 cents. Other states in the Midwest have lower rates. Indiana's is the closest, at 68.19 cents, followed by Michigan at 63.57 cents. In Missouri, which has the lowest average of Illinois' neighbors at $3.80, the gas tax accounts for 38.32 cents per gallon.