Greentown, OH has a population of 4,088 and is the 7,350th largest city in the United States. The population density is 1,492 per sq mi which is 479% higher than the Ohio average and 1546% higher than the national average. The median age in Greentown is 38 which is approximately 4% lower than the Ohio average of 39. In Greentown, 73% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 84% of Greentown residents were born in Ohio, 14% were born out of state, 0% were born outside of the United States and 1% were foreign born.