Marrying your first cousin is legal in New York State, as the Domestic Relations Law does not list cousins among prohibited relationships for marriage. New York permits first cousins, second cousins, and more distant relations to wed without legal restrictions, unlike closer kin such as parents, siblings, or aunts/uncles with nieces/nephews.
New York Marriage Prohibitions
Under New York Domestic Relations Law §5, incestuous and void marriages are limited to specific degrees: an ancestor and descendant (like parent-child or grandparent-grandchild), a brother and sister of whole or half blood, and an uncle/niece or aunt/nephew pairing. Cousins of any degree fall outside these bans, making their unions valid and recognized statewide.
The law, rooted in 19th-century statutes, has never expanded to include cousins, positioning New York among about half the states allowing such marriages. No special license requirements, waiting periods, or genetic counseling apply—standard procedures suffice for all couples over 18 (or 17 with consent).
First vs. Distant Cousins
First cousins—sharing grandparents—are explicitly allowed, as are half-first cousins, first cousins once removed, and beyond. Courts and clerks, from NYC to upstate counties, issue licenses routinely without question on cousin status. Adopted cousins face no extra hurdles either.
New York uniquely permits certain avunculate marriages (half-uncle/aunt with half-niece/nephew), but full-blood versions remain banned—cousins stay fully open. Immigration authorities recognize NY cousin marriages as valid for spousal visas, relying on state law where performed.
Out-of-State Recognition Issues
A New York cousin marriage holds full force locally and federally, but states banning first-cousin unions (like Texas or Nevada) may refuse recognition for divorce, inheritance, or custody. Full faith and credit clauses apply unevenly, so residency matters—moving could complicate benefits.
No criminal penalties exist for cousin marriage in NY; violations target only listed prohibited ties, treated as void from inception. Bigamy or fraud in application carries separate penalties.
Health and Social Considerations
While legal, first-cousin marriages carry a slightly elevated genetic risk for offspring (about 4-7% chance of recessive disorders vs. 3-4% general), per medical consensus—counseling is wise but not mandated. Cultural acceptance varies; urban areas like NYC see little stigma, rural spots more.
Historical precedents abound, from European royalty to U.S. figures, but modern stats show rarity (under 0.2% of marriages). NY’s permissive stance prioritizes adult consent over consanguinity concerns.
Practical Steps to Marry
Apply at any city/town clerk with ID, proof of age, and prior divorce decrees if applicable—$40 fee covers the license, valid 60 days statewide. Officiants range from judges to celebrants; no blood tests required since 2012.
SOURCES:
- https://familylawyer.1800nynylaw.com/practice-areas/new-york-family-lawyer/domestic-relations/incestuous-and-void-marriages/
- https://www.inglesideindex.com/news/is-it-illegal-to-marry-your-cousin-in-new-york-in-2025-heres-what-the-law-says/
