Grove City, PA has a population of 8,170 and is the 4,618th largest city in the United States. The population density is 3,035 per sq mi which is 995% higher than the Pennsylvania average and 3250% higher than the national average. The median age in Grove City is 25 which is approximately 38% lower than the Pennsylvania average of 41. In Grove City, 37% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 68% of Grove City residents were born in Pennsylvania, 29% were born out of state, 1% were born outside of the United States and 1% were foreign born.