Glendale, AZ has a population of 231,978 and is the 88th largest city in the United States. The population density is 3,966 per sq mi which is 6944% higher than the Arizona average and 4277% higher than the national average. The median age in Glendale is 33 which is approximately 10% lower than the Arizona average of 37. In Glendale, 49% of the population over 15 years of age are married, 69% speak English and 24% speak Spanish. 41% of Glendale residents were born in Arizona, 41% were born out of state, 1% were born outside of the United States and 17% were foreign born.