Tuba City is in Northern Arizona.
Tuba City is the largest settlement on the Arizona side of the Navajo Nation. There is little to entertain the traveler, but it makes a good refueling stop on the way from Monument Valley to the Grand Canyon. However, be aware that the city imposes a combined state and local sales tax of 13.725%, the highest in the United States.
Tuba City is on U.S. Route 160, about 100 miles north of Flagstaff.
As Tuba is located within the reservation, it's a dry town, with no alcohol available.