Claysville, PA has a population of 891 and is the 15,864th largest city in the United States. The population density is 2,880 per sq mi which is 939% higher than the Pennsylvania average and 3079% higher than the national average. The median age in Claysville is 42 which is approximately 2% higher than the Pennsylvania average of 41. In Claysville, 60% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 74% of Claysville residents were born in Pennsylvania, 24% were born out of state, 2% were born outside of the United States and 1% were foreign born.