Is It Illegal to Marry Your Cousin in Utah? Here’s What the Law Says

The question of whether it is legal to marry your cousin is surprisingly complex, especially in the United States. Cousin marriage has a long and intricate history, with laws and social attitudes varying across cultures and time periods. Utah holds a unique position in the debate surrounding cousin marriage in the US.

Utah’s Cousin Marriage Laws

In Utah, marrying your first cousin is generally prohibited. However, the state makes exceptions under specific conditions:

  • Age Requirement: Both individuals must be at least 65 years old.
  • Infertility Requirement: If both individuals are at least 55 years old, one person must be able to prove their inability to reproduce to a court.

Reasons Behind the Restrictions

The primary reasons behind Utah’s (and many other states’) restrictions on cousin marriage are:

  • Genetic Concerns: Close relatives share a higher percentage of their genes, increasing the risk of recessive genetic disorders in their offspring. While the risk is relatively small for any individual couple, the concern lies in the potential for it to become more widespread if cousin marriage were more common.
  • Social and Ethical Considerations: Some view cousin marriage as taboo or morally questionable. Concerns exist regarding the power dynamics within families and the potential for societal disapproval.

The Debate Surrounding Cousin Marriage

The debate around cousin marriage raises significant questions about individual freedom, genetic risk, and social norms.

  • Arguments in Favor:
    • Individual Liberty: Supporters argue that adults should have the right to marry whomever they choose, regardless of familial ties.
    • Low Genetic Risk: The actual risk of genetic disorders in children of first cousins is relatively low, though higher than for unrelated couples.
    • Cultural Acceptance: Cousin marriage is practiced and accepted in many cultures around the world.
  • Arguments Against:
    • Potential Genetic Harm: While the risk may be low per couple, the concern is with increased risks on a population level if cousin marriage becomes more prevalent.
    • Social Stigma: Cousin marriage remains largely taboo in many Western societies, leading to potential social repercussions for couples and their children.
    • Vulnerable Populations: There are concerns about the potential for coercion or exploitation in cousin marriages, especially in societies where arranged marriages are common.
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States with Varying Laws

The legality of cousin marriage varies significantly across the United States.

  • Some states completely ban cousin marriages.
  • Others, like Utah, have specific restrictions.
  • A number of states have no restrictions on cousin marriage.

It’s worth noting that even in states where cousin marriage is legal, societal opinions may still vary.

The Future of Cousin Marriage Laws in Utah

The future of Utah’s cousin marriage laws is uncertain. There’s a possibility of:

  • Legal Challenges: Laws could be challenged based on arguments of individual liberty and discrimination.
  • Changing Public Opinion: As understanding of genetics evolves and social attitudes shift, public opinion on cousin marriage may change.


The legality of cousin marriage in Utah is a nuanced issue with historical, legal, scientific, and ethical dimensions. Utah’s laws reflect specific concerns about genetic risks and social norms.

Frequently Asked Questions

  1. Can I marry my first cousin in Utah?

Generally, no. Utah law prohibits marriage between first cousins. However, there are exceptions:

  • Age Exception: If both individuals are 65 or older.
  • Infertility Exception: If both individuals are at least 55 years old, and a court establishes that one of them is unable to reproduce.
  1. Why does Utah restrict cousin marriage?

The primary reasons for these restrictions include:

  • Genetic concerns: Marrying a close relative increases the chances of passing on recessive genetic disorders to offspring.
  • Social concerns: Some people find cousin marriage morally problematic or socially taboo.
  1. Is the risk of birth defects in children of cousins really that high?

The risk of birth defects for children of first cousins is slightly elevated compared to children of unrelated parents. However, the absolute risk remains relatively low. It’s important for couples considering cousin marriage to seek genetic counseling.

  1. What are the arguments for and against cousin marriage?
  • Arguments for:
    • Individual freedom to choose a spouse
    • Low overall risk of genetic disorders
    • Cultural acceptance in many parts of the world
  • Arguments against:
    • Potential increased risk of genetic issues, even if small
    • Social stigma and disapproval
    • Concerns about potential for familial pressure or coercion
  1. How do Utah’s cousin marriage laws compare to other states?
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Cousin marriage laws vary widely across the US. Some states ban it completely, others allow it with restrictions like Utah, and some states have no restrictions whatsoever.

  1. Can I get in legal trouble if I marry my cousin in another state where it’s legal and then move back to Utah?

Potentially, yes. Utah does have laws that can void marriages between cousins, even if those marriages were legal in the state where they took place.

  1. Where can I find more information and resources about cousin marriage?
  • Utah State Courts Website: Provides details on Utah’s marriage laws (
  • Genetic Counseling Services: Can offer advice specific to your family and health history.
  • Organizations and Resources: Some websites and advocacy groups specifically address cousin marriage, providing information and support networks.

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