Yes, cousin marriage is legal in Oklahoma, subject to specific restrictions under state law. The Oklahoma State Department of Health enforces marriage license statutes, which permit first-cousin unions unless prohibited by additional local ordinances or federal compliance standards. No recent 2026 legislative shifts have altered this framework.
Key Regulations for Cousin Marriage in Oklahoma
- First-cousin unions permitted: Oklahoma Statutes Title 43 § 2 allow marriage between first cousins, provided neither party is already married or within prohibited degrees of consanguinity.
- Age and consent requirements: Applicants must be at least 18 years old or meet statutory exceptions for minors with parental and judicial approval, per Title 43 § 3.
- Licensing and solemnization: Marriage licenses are issued by county court clerks, with no additional genetic testing or eugenics-era restrictions remaining in effect.
Local jurisdictions retain limited authority to impose supplementary conditions, but no Oklahoma county currently enforces stricter prohibitions on cousin marriage. The Oklahoma State Department of Health’s Vital Records Division monitors compliance with state marriage statutes, ensuring adherence to these provisions. Federal law does not preempt Oklahoma’s allowance of cousin marriages, as confirmed by the U.S. Supreme Court’s 2015 Obergefell v. Hodges decision and subsequent interpretations.