Suncook, NH has a population of 5,171 and is the 6,309th largest city in the United States. The population density is 1,389 per sq mi which is 883% higher than the New Hampshire average and 1433% higher than the national average. The median age in Suncook is 39 which is approximately 8% lower than the New Hampshire average of 42. In Suncook, 57% of the population over 15 years of age are married, 92% speak English and 0% speak Spanish. 64% of Suncook residents were born in New Hampshire, 28% were born out of state, 0% were born outside of the United States and 7% were foreign born.