Tennyson, IN has a population of 327 and is the 22,012th largest city in the United States. The population density is 1,399 per sq mi which is 679% higher than the Indiana average and 1444% higher than the national average. The median age in Tennyson is 34 which is approximately 8% lower than the Indiana average of 37. In Tennyson, 43% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 72% of Tennyson residents were born in Indiana, 26% were born out of state, 2% were born outside of the United States and 0% were foreign born.