"The Road Not Taken" was published in 1916, in a volume of poetry called Mountain Interval. Although we tend to think of it as an American poem, it was actually written in England. According to Helen Smith in the book An Uncommon Reader, the poem arose from walks Frost took in the English countryside with British poet Edward Thomas. Thomas apparently would sometimes take a long time pondering which way they should go when they came to a crossroads while walking.
Although urged to go to the United States at the beginning of World War I, Thomas enlisted in the British army and was killed in the war.
Even though it is set in England rather than New England, the timeless quality and universal message of the poem seem to suggest that it could have been written in any number of places.