Duxbury, MA has a population of 1,498 and is the 12,689th largest city in the United States. The population density is 679 per sq mi which is 8% higher than the Massachusetts average and 649% higher than the national average. The median age in Duxbury is 53 which is approximately 35% higher than the Massachusetts average of 39. In Duxbury, 78% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 63% of Duxbury residents were born in Massachusetts, 34% were born out of state, 0% were born outside of the United States and 3% were foreign born.