Southport, CT has a population of 1,694 and is the 12,002nd largest city in the United States. The population density is 1,974 per sq mi which is 205% higher than the Connecticut average and 2079% higher than the national average. The median age in Southport is 52 which is approximately 27% higher than the Connecticut average of 41. In Southport, 74% of the population over 15 years of age are married, 89% speak English and 3% speak Spanish. 36% of Southport residents were born in Connecticut, 54% were born out of state, 1% were born outside of the United States and 9% were foreign born.