Gas under $3 - coming to a station near you

NEW YORK (CNNMoney)
It's becoming easier and easier to find gas for less than $3 a gallon.

The average price of a gallon of regular gas now stands at $3.19, according to AAA, after falling by about a penny a day for the last week. The steady decline has taken the average price below $3 already in six states -- Missouri, Oklahoma, Arkansas, Texas, Kansas and Louisiana. Another six states are enjoying an average price within a nickel of that benchmark and could dip below three dollars soon.

But $3 gas isn't just limited to these 6 states.

Nearly 20% of gas stations nationwide are already charging less than $3 a gallon for regular gas, according to the Oil Price Information Service. And those stations are selling far more than their share of gas.

"In almost half the states, you don't need to make a great effort to find gas at $3 or less," said Tom Kloza, chief oil analyst for OPIS, which compiles the price data for AAA, as well as for GasBuddy.com.