Buckeye, AZ has a population of 59,310 and is the 660th largest city in the United States. The population density is 151 per sq mi which is 163% higher than the Arizona average and 67% higher than the national average. The median age in Buckeye is 34 which is approximately 9% lower than the Arizona average of 37. In Buckeye, 54% of the population over 15 years of age are married, 75% speak English and 23% speak Spanish. 38% of Buckeye residents were born in Arizona, 50% were born out of state, 1% were born outside of the United States and 10% were foreign born.