Clifton, AZ has a population of 3,583 and is the 7,937th largest city in the United States. The population density is 245 per sq mi which is 327% higher than the Arizona average and 171% higher than the national average. The median age in Clifton is 29 which is approximately 22% lower than the Arizona average of 37. In Clifton, 57% of the population over 15 years of age are married, 73% speak English and 23% speak Spanish. 69% of Clifton residents were born in Arizona, 24% were born out of state, 0% were born outside of the United States and 7% were foreign born.