Gas prices in North Dakota have continued to fall over the last week, although not as fast as most in the state would like.

According to data from AAA auto, North Dakota gas prices remain high but have started to trickle down since last week.

Williams County comes in with an average price of $4.10, making prices 12 cents above the state average of $3.98 and 22 cents above the national average of $3.88 which is up 7 cents over the last week.

In Burleigh County prices have fallen back under the $4 threshold, down to $3.95.

The most expensive county to fill up in is McKenzie at $4.14 and the least expensive is Steele County at $3.69 per gallon.

Earlier this week, the national average for a gallon of gas reached what may be its highest price of $3.88, before falling a few cents in the days that followed. The average price today is $3.86, up a penny from a week ago.

According to Andrew Gross, a representative for AAA, "the recent decline in the national average, while minor, is fairly typical at this time of year as much of the country switches to less expensive winter blend gasoline." "But higher oil costs, which are hovering around $90 a barrel, are slowing the gradual seasonal decline in pump prices," the article continued.

The Energy Information Administration (EIA) has released new statistics showing that last week's gas demand increased marginally from 8.31 to 8.41 million b/d. While this was happening, the nation's overall gasoline stock fell marginally, from 220.3 to 219.5 million bbl. Pump prices have increased as a result of tighter supplies and more demand for gas, but oil's continued rise beyond $90 a barrel is what is driving the hikes that motorists are seeing.

The current national average, $3.86, is same from one month ago but 18 cents more than it was one year ago.

The nation’s top 10 most expensive markets: California ($5.79), Nevada ($5.06), Washington ($5.04), Hawaii ($4.83), Oregon ($4.68), Arizona ($4.65), Alaska ($4.60), Utah ($4.25), Montana ($4.19) and Idaho ($4.14).

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