North Grosvenor Dale, CT has a population of 1,470 and is the 12,810th largest city in the United States. The population density is 649 per sq mi which is equal to the Connecticut average and 616% higher than the national average. The median age in North Grosvenor Dale is 32 which is approximately 20% lower than the Connecticut average of 41. In North Grosvenor Dale, 61% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 53% of North Grosvenor Dale residents were born in Connecticut, 45% were born out of state, 2% were born outside of the United States and 0% were foreign born.