The national average U.S. retail price of diesel fuel fell from the previous average of  $1.734 to $1.711, the Department of Energy reported June 14.

Once again, the highest prices in the nation were in California, where the average cost is $2.051 – the only region in the country to remain above the $2 mark.

Among the higher prices were New England, at $1.810; $1.879 in the Rocky Mountain region; the Central Atlantic region, at $1.780; and on the West Coast, where the average price is $1.998.

Other prices include the Lower Atlantic region, where the average price is $1.636; the Midwest, at $1.657; the Gulf Coast, at $1.635; and the East Coast, at $1.687.