Massachusetts is a commonwealth because John Adams used that word when he drafted the state’s constitution in 1780, and the term has stayed in the founding document ever since. The label reflects a founding philosophy — that government exists for the common welfare of its people and rests on the consent of the governed — rather than any special legal status. Under federal law, Massachusetts holds exactly the same powers and obligations as every other state.1Commonwealth of Massachusetts. Why Is Massachusetts a Commonwealth
Commonwealth and State Mean the Same Thing Legally
Four states call themselves commonwealths: Massachusetts, Pennsylvania, Virginia, and Kentucky. All four are legally identical to the other forty-six.2Secretary of the Commonwealth of Massachusetts. Concise Facts The U.S. Constitution treats every state the same way regardless of the name it uses for itself. A commonwealth cannot tax differently, legislate more broadly, or claim sovereignty that other states lack. Massachusetts residents have the same relationship with the federal government as residents of New York or Ohio.
What the word does carry is meaning. “Commonwealth” comes from a political tradition emphasizing that public authority belongs to the community as a whole. When the four states adopted the title, they were making a statement about the source of governmental power, not claiming a distinct legal category.
Why John Adams Chose the Word
Adams drafted the Constitution of the Commonwealth of Massachusetts in 1780, and it is the oldest written constitution still in continuous use anywhere in the world.3Mass.gov. John Adams and the Massachusetts Constitution The word “commonwealth” fit the moment. It emphasized representative democracy and, some historians say, carried anti-monarchical weight at a time when the former colonies were still defining themselves against British rule.
Massachusetts was not the first to use the term. Virginia adopted it in 1776 to signal that its new government rested on the consent of the people rather than royal authority. Pennsylvania followed that same year. Kentucky picked it up later when it modeled its own constitution on Pennsylvania’s. Adams was working within an established revolutionary vocabulary when he wrote the word into the Massachusetts document.
The choice was philosophical rather than practical. Nothing in the word altered how the new state would function, and nothing in it distinguishes commonwealth governance today. What it did was mark the founding generation’s break from the idea that legitimate authority flows downward from a crown.
The Idea Behind the Word
The 1780 constitution’s preamble frames Massachusetts as a “body politic” formed by voluntary association. It describes government as a social compact in which the whole people covenant with each citizen, and each citizen with the whole people, for the common good. That language established a theory of governance rooted in consent, which was genuinely radical in the late eighteenth century. The preamble also declares that when government fails to secure these purposes, the people have the right to alter it.
That framing is what “commonwealth” points to. The Latin roots translate roughly to “common well-being,” and the preamble builds the entire structure of state authority on that foundation. Adams and his contemporaries were designing something they wanted to look nothing like a monarchy, and the vocabulary they used reflected that ambition.
The Declaration of the Rights of the Inhabitants, which follows the preamble, predates the federal Bill of Rights by nearly a decade. Article I opens with the statement that all people “are born free and equal” and possess natural rights including the right to acquire property and to seek safety and happiness.4General Court of Massachusetts. Massachusetts Constitution A later amendment added that equality under the law cannot be denied because of sex, race, color, creed, or national origin. These are the substantive protections that give the commonwealth idea its practical shape.
Many of Adams’s core ideas, including the separation of powers and a declaration of individual rights, later appeared in the U.S. Constitution of 1787.5Secretary of the Commonwealth of Massachusetts. Virtual Tour – 1780 Massachusetts Constitution The Massachusetts document, and the commonwealth framework it built, influenced the national one that followed.
Where You See the Word Today
The commonwealth designation shows up throughout state government, which is often what leads people to ask about it in the first place. Criminal cases are captioned “Commonwealth vs.” rather than “State vs.” or “People vs.”6Justia Law. Commonwealth vs Anildo Lopes Correia The state seal carries the full title. Legislative acts, jury summonses, business filings, and licenses issued by state agencies all use it.
The state’s chief administrative officer is called the Secretary of the Commonwealth, not the Secretary of State. The legislature is formally the General Court of the Commonwealth. Statutes, agency names, and official correspondence all follow the same convention.
None of this changes what the state can do or what residents owe it. A criminal defendant in Boston is prosecuted under the same constitutional protections as one in Chicago. A business incorporating in Massachusetts follows procedures similar in kind to those in any other state. The naming convention is consistent, visible, and historically grounded, and it is also, in every practical legal sense, only a name.
The Short Answer
Massachusetts is a commonwealth because its 1780 constitution says so, and its constitution says so because Adams and his contemporaries wanted a word that captured government by and for the common good. The title has stayed for nearly two and a half centuries because the document has stayed. It signals a founding philosophy, appears throughout official state life, and confers no additional power. If Massachusetts dropped the word tomorrow, the state’s authority and your rights within it would be exactly the same.