Christiana, PA has a population of 934 and is the 15,568th largest city in the United States. The population density is 1,771 per sq mi which is 539% higher than the Pennsylvania average and 1855% higher than the national average. The median age in Christiana is 42 which is approximately 3% higher than the Pennsylvania average of 41. In Christiana, 58% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 75% of Christiana residents were born in Pennsylvania, 20% were born out of state, 1% were born outside of the United States and 3% were foreign born.