Parker, AZ has a population of 3,043 and is the 8,741st largest city in the United States. The population density is 138 per sq mi which is 141% higher than the Arizona average and 53% higher than the national average. The median age in Parker is 33 which is approximately 11% lower than the Arizona average of 37. In Parker, 50% of the population over 15 years of age are married, 79% speak English and 20% speak Spanish. 49% of Parker residents were born in Arizona, 39% were born out of state, 1% were born outside of the United States and 12% were foreign born.