Tuba City, AZ has a population of 9,221 and is the 4,184th largest city in the United States. The population density is 1,027 per sq mi which is 1687% higher than the Arizona average and 1034% higher than the national average. The median age in Tuba City is 28 which is approximately 23% lower than the Arizona average of 37. In Tuba City, 40% of the population over 15 years of age are married, 49% speak English and 0% speak Spanish. 89% of Tuba City residents were born in Arizona, 9% were born out of state, 0% were born outside of the United States and 2% were foreign born.