No, it is illegal to marry your first cousin in Kentucky under state law, which prohibits unions closer than second cousins. Marriages violating this rule are deemed incestuous and void from inception.
Kentucky’s Marriage Statute
Kentucky Revised Statutes §402.010 explicitly states: “No marriage shall be contracted between persons who are nearer of kin to each other by consanguinity, whether of the whole or half-blood, than second cousins.” Such marriages are automatically void, regardless of ceremony or out-of-state validity. This rule, amended in 1946, applies to full and half-blood relations alike.
Prohibited Relationships
First cousins, half-first cousins, and first cousins once removed cannot wed. Second cousins and more distant kin face no restrictions. The law covers blood relations only, not in-laws or step-relations. Adopted cousins follow similar consanguinity rules unless judicially severed.
Out-of-State Marriages
Kentucky refuses to recognize first-cousin marriages performed elsewhere, even in permissive states like California. County clerks verify kinship via affidavits or records, voiding non-compliant unions upon return. This strict stance aligns with policies treating them as incestuous ab initio.
Penalties and Enforcement
No criminal penalty exists solely for attempting marriage, but related acts like cohabitation may trigger misdemeanor charges under broader incest statutes (§510.060). County clerks deny licenses proactively; post-facto challenges annul the union. Immigration or benefits may also reject such spouses.
Comparison Table
Historical Context
Pre-1946, first-cousin marriages occurred legally, but the amendment closed loopholes amid genetic concerns. Kentucky joins 24 states banning them, prioritizing public policy over comity. Recent debates, like 2024 amendments, upheld the ban despite genetic counseling proposals.
Practical Advice
Verify degrees via genealogy tools before applying. Second cousins share great-grandparents; first share grandparents. Consult clerks for affidavits proving distance. For immigration or inheritance, legal opinions confirm second-cousin unions’ validity. Genetic risks remain low (3-4% added defects) but inform counseling.
SOURCES:
- https://www.garycjohnson.com/qa-is-it-legal-to-marry-your-first-cousin-in-kentucky/
- https://www.yahoo.com/news/cousin-marriage-legal-kentucky-210000676.html












