Higganum, CT has a population of 1,745 and is the 11,826th largest city in the United States. The population density is 355 per sq mi which is 45% lower than the Connecticut average and 292% higher than the national average. The median age in Higganum is 44 which is approximately 9% higher than the Connecticut average of 41. In Higganum, 69% of the population over 15 years of age are married, 87% speak English and 0% speak Spanish. 61% of Higganum residents were born in Connecticut, 29% were born out of state, 1% were born outside of the United States and 9% were foreign born.