Del Muerto, AZ has a population of 430 and is the 20,468th largest city in the United States. The population density is 434 per sq mi which is 655% higher than the Arizona average and 379% higher than the national average. The median age in Del Muerto is 41 which is approximately 9% higher than the Arizona average of 37. In Del Muerto, 43% of the population over 15 years of age are married, 24% speak English and 0% speak Spanish. 93% of Del Muerto residents were born in Arizona, 3% were born out of state, 0% were born outside of the United States and 3% were foreign born.