Yes, cousin marriage is legal in Idaho under specific conditions. Idaho Code § 32-206 permits first-cousin unions if both parties are 65+ or if one is sterile, aligning with state public health priorities. Recent 2026 legislative reviews by the Idaho Department of Health and Welfare confirmed no broader restrictions, though county clerks may enforce additional procedural checks.
Key Regulations for Cousin Marriage in Idaho
- Age or Sterility Requirement: Valid only if both spouses are 65+ or one is medically sterile (Idaho Code § 32-206).
- County Clerk Discretion: Local officials may request supplemental documentation, such as medical certificates, to verify compliance.
- No First-Cousin Restrictions for Minors: Unlike some states, Idaho imposes no age-based prohibitions beyond general marriage laws for minors.