Markleysburg, PA has a population of 282 and is the 22,802nd largest city in the United States. The population density is 939 per sq mi which is 239% higher than the Pennsylvania average and 936% higher than the national average. The median age in Markleysburg is 49 which is approximately 20% higher than the Pennsylvania average of 41. In Markleysburg, 58% of the population over 15 years of age are married, 95% speak English and 5% speak Spanish. 83% of Markleysburg residents were born in Pennsylvania, 17% were born out of state, 0% were born outside of the United States and 0% were foreign born.