West Yarmouth, MA has a population of 6,080 and is the 5,716th largest city in the United States. The population density is 910 per sq mi which is 2% higher than the Massachusetts average and 905% higher than the national average. The median age in West Yarmouth is 49 which is approximately 24% higher than the Massachusetts average of 39. In West Yarmouth, 62% of the population over 15 years of age are married, 88% speak English and 1% speak Spanish. 62% of West Yarmouth residents were born in Massachusetts, 26% were born out of state, 1% were born outside of the United States and 11% were foreign born.