Porter, IN has a population of 4,873 and is the 6,585th largest city in the United States. The population density is 786 per sq mi which is 338% higher than the Indiana average and 768% higher than the national average. The median age in Porter is 35 which is approximately 6% lower than the Indiana average of 37. In Porter, 58% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 71% of Porter residents were born in Indiana, 27% were born out of state, 1% were born outside of the United States and 1% were foreign born.