In Massachusetts, it is not illegal to marry your cousin. The state allows first‑cousin marriages, as well as marriages between half‑cousins and cousins by adoption, and there are no special extra conditions (like genetic counseling or age exceptions) required just because the couple happens to be related as cousins.
What the law actually bans
Massachusetts General Laws (Chapter 207, Sections 1 and 2) spell out which close‑family marriages are prohibited, using gender‑specific language that effectively bans unions between parents and children, siblings, grandparents, grandchildren, stepparents, certain in‑laws, and aunts/uncles.
Nowhere in that list does the law mention cousins; that intentional omission is why cousin marriages are legally allowed.
Who can marry in Massachusetts
In addition to allowing cousin marriages, Massachusetts requires that both parties be at least 18 years old (or 16–17 with parental consent and court approval), unmarried, and legally competent to consent. Residency is not required to get married in the state, so couples from other states or countries can still marry there as long as they meet these basic rules.
Social views vs. legal status
While some people may have personal or cultural reservations about cousin marriages, Massachusetts courts treat a valid cousin marriage the same as any other legal marriage once it is properly licensed and solemnized. The state’s focus is on age, consent, and prohibited relationships; it does not single out cousin unions for extra penalties or restrictions.
SOURCES :
- https://shark1053.com/ixp/701/p/is-it-illegal-to-marry-your-first-cousin-in-new-england/
- https://www.themonastery.org/marriage-laws/massachusetts
