Etna Green, IN has a population of 623 and is the 18,195th largest city in the United States. The population density is 1,244 per sq mi which is 593% higher than the Indiana average and 1273% higher than the national average. The median age in Etna Green is 40 which is approximately 6% higher than the Indiana average of 37. In Etna Green, 56% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 84% of Etna Green residents were born in Indiana, 15% were born out of state, 1% were born outside of the United States and 1% were foreign born.