Mayfield, PA has a population of 1,728 and is the 11,891st largest city in the United States. The population density is 706 per sq mi which is 155% higher than the Pennsylvania average and 680% higher than the national average. The median age in Mayfield is 47 which is approximately 15% higher than the Pennsylvania average of 41. In Mayfield, 64% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 88% of Mayfield residents were born in Pennsylvania, 10% were born out of state, 0% were born outside of the United States and 2% were foreign born.