On December 18, 1990, the Legislature decided that the people of the Commonwealth would be designated as Bay Staters.
Bay Stater (official term used by state government), Massachusite (traditional)
The law designating the term, 'Bay Staters,' as the official Massachusetts state citizens is found in the General Laws of Massachusetts, Part 1, Title 1, Chapter 2, Section 35
PART I ADMINISTRATION OF THE GOVERNMENT
TITLE I JURISDICTION AND EMBLEMS OF THE COMMONWEALTH, THE GENERAL COURT, STATUTES AND PUBLIC DOCUMENTS
CHAPTER 2. ARMS, GREAT SEAL AND OTHER EMBLEMS OF THE COMMONWEALTH
Section 35 Designation of citizens of commonwealth
Section 35. Bay Staters shall be the official designation of citizens of the commonwealth