Why are Missouri's gas prices always lower than the rest of the nations? Refer to this heat map...?

Question

http://www.gasbuddy.com/gb_gastemperaturemap.aspx?z=0&%3Bamp%3Bamp%3Bamp%3Bamp%3Bamp%3Blat=37.000000&%3Bamp%3Bamp%3Bamp%3Bamp%3Bamp%3Blong=-96.000000&%3Bamp%3Bamp%3Bamp%3Bamp%3Bamp%3Bft=A&%3Bamp%3Bamp%3Bamp%3Bamp%3Bamp%3Btl=48

Answer 1

Lower state gas tax!

Answer 2

Probably the state gas tax rate is one reason.

Another possibility is that they require less exotic fuel mixtures.

Answer 3

Lower state taxes. It also helps that Missouri is in the center of the US and has several pipelines that cross it as well as the Mississippi and Missouri Rivers for barge traffic.

St. Louis and Kansas City both require a special blends to meet EPA regulations.

Supply and demand - the supply comes here.