Marrying your cousin is a topic that often raises questions about legality and social norms in various states in the U.S. If you’re wondering whether it is legal to marry your cousin in New Mexico, the answer is clear: it is legal to marry your cousin in New Mexico, including first cousins. This article explains the legal landscape around cousin marriage in New Mexico and provides important details about the process and considerations.
Cousin Marriage Laws in New Mexico
New Mexico does not have any laws that prohibit marriages between first cousins. Unlike many states that explicitly forbid cousin marriage, New Mexico’s legal code simply does not include first cousins in its list of prohibited marriages. The state prohibits marriages between closer relations such as siblings (full or half), parents and children, grandparents and grandchildren, aunts/uncles with nieces/nephews, but first cousins are allowed to marry without any special restrictions.
This means that two people who are first cousins (sharing common grandparents) can legally get married in New Mexico without facing legal obstacles. Other cousin relationships such as half-first cousins, first cousins once removed, second cousins, and more distant cousins are also permitted to marry in the state.
Marriage License and Application Process
To get married in New Mexico, including if you are marrying your cousin, couples must apply for a marriage license at a county clerk’s office. The process must be done in person, and the couple signs the application under oath. While some counties allow completing parts of the application in advance, the final signing must occur in front of the clerk to be valid.
The application might include questions about the relationship between the couple, and while a first cousin relationship may come up, it is not a barrier to obtaining the license. Couples should be truthful about their relationship if asked, but no additional permissions or medical clearances are required specifically for cousin marriage.
Legal Age and Other Requirements
The general marriage laws in New Mexico apply to cousin marriages as well:
The legal age to marry without parental consent is 18.
Minors aged 16 or 17 can marry with parental or guardian consent.
Those younger than 16 may marry with court permission, often in cases such as pregnancy.
Both parties must not already be married.
Consent from both individuals is mandatory.
As long as these conditions are met, cousin couples can legally marry.
Recognition of Cousin Marriages from Other States
If you marry your cousin in New Mexico but live in a state where cousin marriage is illegal, your marriage may not be recognized there. New Mexico allows out-of-state couples to marry within its borders, but it’s important to check the laws of your home state regarding recognition of cousin marriages performed elsewhere.
Health and Genetic Considerations
Concerns about genetic risks for children born to cousin couples are common, but modern scientific studies show that while the risk of genetic disorders is somewhat higher, it is often less significant than popularly believed. Couples planning to start a family may consider consulting a genetic counselor for personalized advice.
Summary
Marrying your first cousin is legal in New Mexico.
The state does not list first cousins among prohibited marriage relations.
Couples must follow the state’s general marriage laws regarding age and consent.
No special permissions or medical clearances are required for cousin marriage.
Cousin marriages performed in New Mexico may not be recognized in states where it is illegal.
Couples concerned about genetic risks can consult healthcare professionals.
New Mexico is one of the states in the U.S. with permissive laws on cousin marriage, allowing first cousins and other cousin relations to marry without legal restriction. Understanding these laws can help couples make informed decisions and navigate the marriage process smoothly in the Land of Enchantment.
This legal openness reflects changing perspectives and the balance between tradition, personal choice, and modern understanding of genetics.
If you plan to marry your cousin in New Mexico, as long as you meet the standard requirements for marriage, state law supports your union without additional hurdles.
Sources
[1] https://www.nmlegis.gov/Sessions/24%20Regular/bills/house/HB0242.HTML
[2] https://local.newsbreak.com/news/4053576471482-is-it-illegal-to-marry-your-cousin-in-new-mexico-here-s-what-the-law-says
[3] https://dataminingdna.com/can-first-cousins-marry-in-new-mexico/
[4] https://collincountymagazine.com/2025/07/08/is-it-illegal-to-marry-your-cousin-in-new-mexico-heres-what-the-law-says/
[5] https://en.wikipedia.org/wiki/Cousin_marriage_law_in_the_United_States
