AreaVibes reveals the best places to live in Massachusetts for 2016 using our Livability Score. The Livability Score for each city in Massachusetts is calculated out of 100 from a unique algorithm based on various metrics, including: amenities, cost of living, crime, education, employment, housing and weather. Massachusetts has a population of 6,657,291 and a population density of 629.7 people per square mile. The capital city is Boston and the largest city in Massachusetts is Boston. To filter the results, use the dropdown options to sort by population or category.