Jackson, MS – In Mississippi, marrying your first cousin is strictly illegal, with the state enforcing one of the most rigid stances on cousin marriages in the country.
The law clearly defines first cousin unions as incestuous and void, leaving no room for exceptions based on age, infertility, or consent.
First Cousin Marriage: Strictly Prohibited
Under Mississippi Code § 93-1-1, the law states:
“…nor shall the children of brother or sister, or brothers and sisters intermarry being first cousins by blood. … All marriages prohibited by this subsection are incestuous and void.”
This means first cousins—those who share a set of grandparents—are not allowed to marry in Mississippi under any circumstance. The law does not allow for special cases, and all such marriages are considered legally null.
Scope and Enforcement of the Law
Mississippi’s prohibition applies to everyone equally, and it includes:
- No legal exceptions for advanced age, infertility, or religious reasons
- Bans on sexual relationships and cohabitation between first cousins
- Automatic voiding of such marriages if discovered, regardless of when or where they occurred
Out-of-State Marriages Not Recognized
Mississippi also does not recognize first cousin marriages performed in states where such unions are legal. The law specifies that even if a couple marries legally elsewhere, their marriage is void once they return to Mississippi:
“Any attempt to evade Section 93-1-1 by marrying out of this state and returning to it shall be within the prohibitions of said section.”
Marriage License Process
Mississippi marriage applications do not explicitly ask about blood relation. However, both parties must affirm there are no legal impediments, and signing under false pretenses may void the marriage if discovered.
Read Also: Is It Illegal to Marry Your Cousin in New Mexico? Here’s What the Law Says in 2025
Penalties and Legal Consequences
Marriages between first cousins are:
- Considered incestuous and legally invalid
- Not granted spousal rights like inheritance or joint property
- Potentially subject to misdemeanor penalties if knowingly entered or officiated
Cultural Context
Though first cousin marriage is legal in 18 states, Mississippi remains firm in its prohibition. The law reflects cultural concerns about familial relationships and potential genetic risks in offspring.
In short, it is illegal to marry your first cousin in Mississippi. The state considers such unions void and unrecognized—even if performed legally in another state. However, more distant cousin relationships like first cousins once removed or second cousins are legally permitted under current law.
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