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 | Official name: Commonwealth of Massachusetts Massachusetts postal code abbreviation: MA You may also be interested in the answers to the following questions: Total area: 27 336 km2 ✅ What is the largest city by population in Massachusetts?- Largest Massachusetts cities by population: Boston ✅ What is the capital of Massachusetts?- State capital of Massachusetts: Boston ✅ What is the population of Massachusetts?- Massachusetts state population 2025: 6 587 536 |