Tracking Massachusetts’ Constitution

State constitutions are amended far more frequently than the U.S. Constitution. While the U.S. Constitution has been amended only 27 times (and only 17 times since 1791), the nation’s state constitutions have been amended at least 7,000 times in all. Massachusetts is no exception. Since the Massachusetts Constitution’s ratification in 1780, the document has been amended 121 times. In other words, the Massachusetts Constitution reflects not just the work of its eighteenth century drafters, but the ongoing work of generations of Massachusettsans ever since.

You can view and search the full historical version of the constitution and trace changes across amended provisions. Massachusetts is unique among the states for appending all amendments to the end of the state constitution, thus preserving the original text of the constitution. 

Massachusetts Constitution data last updated December 5, 2024.

121
Amendments
Since 1788
1790
1800
1810
1820
1830
1840
1850
1860
1870
1880
1890
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
2020

Each block on this histogram represents a change—e.g., a substantive change, repeal & replace, or renumbering—to an individual section rather than an amendment. Some amendments result in multiple changes, resulting in multiple blocks being attributed to one amendment. Likewise, a section may be amended more than once in an year, but these amendments will only appear as one block on the histogram. When a block or blocks are marked red in a specific year, that means that a new constitution went into effect that year.

Explore by Provision

The Constitution’s provisions are organized into Parts, which may be further divided in Chapters and Sections, and these parts contain the operative Articles that make up the primary provisions of the Constitution. Here, you can view an outline of the Constitution, see the Constitution’s full text as it stood on any date since ratification, and compare any amended provision of the Constitution to its earlier version.

Explore by Year

View the constitution’s amendments by year of adoption.

The Massachusetts Constitution & Its Amendments

The Massachusetts Constitution is the oldest U.S. state constitution still in effect today. Adopted in 1780, it is older even than the U.S. Constitution, which was ratified in 1788. The Massachusetts Constitution can be amended by three methods: legislatively-referred, indirect citizen-initiated, and convention referred constitutional-amendments.

 

Massachusetts State Capitol. Carol M. Highsmith.

Additional Resources

Access links to commonly referenced sources in Massachusetts constitutional research.