Harwick, PA has a population of 917 and is the 15,679th largest city in the United States. The population density is 2,075 per sq mi which is 623% higher than the Pennsylvania average and 2190% higher than the national average. The median age in Harwick is 52 which is approximately 28% higher than the Pennsylvania average of 41. In Harwick, 58% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 94% of Harwick residents were born in Pennsylvania, 4% were born out of state, 0% were born outside of the United States and 1% were foreign born.