Shelton, CT has a population of 40,979 and is the 1,003rd largest city in the United States. The population density is 1,338 per sq mi which is 107% higher than the Connecticut average and 1377% higher than the national average. The median age in Shelton is 47 which is approximately 15% higher than the Connecticut average of 41. In Shelton, 62% of the population over 15 years of age are married, 82% speak English and 5% speak Spanish. 65% of Shelton residents were born in Connecticut, 21% were born out of state, 1% were born outside of the United States and 13% were foreign born.