Mount Etna, IN has a population of 116 and is the 26,506th largest city in the United States. The population density is 1,009 per sq mi which is 462% higher than the Indiana average and 1014% higher than the national average. The median age in Mount Etna is 46 which is approximately 22% higher than the Indiana average of 37. In Mount Etna, 81% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 83% of Mount Etna residents were born in Indiana, 17% were born out of state, 0% were born outside of the United States and 0% were foreign born.