In the U.S., the minimum age to marry is not the same in every state. In most states, the default minimum is 18 , but some states allow marriage below 18 with parental consent, court approval, or both, and a few states have had more restrictive or unusual rules.

What that means

  • 18 is the common baseline age.
  • Some states allow minors to marry under specific conditions, such as parental consent and/or judicial approval.
  • The exact rules can vary a lot by state, so the answer depends on where the marriage would take place.

Practical takeaway

If you need the rule for a specific state, the safest answer is to check that state’s current marriage law before relying on any general guideline. State- by-state summaries show that the minimum age can differ significantly across the country.

Bottom line

For a quick rule of thumb, 18 is the standard minimum age to marry in the U.S. , but it is not a single nationwide law.

TL;DR: Usually 18 , but state laws can allow marriage under 18 in some cases.