Child marriage laws by state fall into two camps: thirteen states and the District of Columbia require both spouses to be at least 18 with no exceptions, and the rest still allow minors to marry through some combination of parental consent, judicial approval, pregnancy, or emancipation. Marriage is regulated almost entirely at the state level, so whether a 16- or 17-year-old (or someone younger) can legally marry depends on where the license is issued.
States That Have Banned Child Marriage Outright
As of early 2025, the following states set the marriage age at 18 with no exceptions: Connecticut, Delaware, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia, and Washington.1Congress.gov. S.4990 – Child Marriage Prevention Act of 2024 The District of Columbia has also banned the practice. Delaware and New Jersey were the first, both in 2018. New Hampshire is the most recent, with a ban signed in June 2024 that took effect in January 2025.
In these jurisdictions no parental signature, judicial waiver, or pregnancy exception can authorize a marriage involving anyone under 18. Since 2016, a total of 35 states have passed new laws to either end or tighten restrictions on child marriage, so even states that have not banned the practice may have narrower rules than they did a few years ago.1Congress.gov. S.4990 – Child Marriage Prevention Act of 2024
At the federal level, marriage age is not set by Congress. Bills like the Child Marriage Prevention Act have been introduced but have not become law, so the rules below still control in every state that has not passed a total ban.
Parental Consent
In most states that still allow underage marriage, the first requirement is parental consent. One or both parents typically must sign a sworn statement, usually notarized or executed in front of a county clerk, confirming they approve the marriage. Without that document, the clerk cannot issue the license. States commonly use parental consent as the sole gate for 16- and 17-year-olds, then require something additional for anyone younger.
Judicial Approval
Many states add a second layer for minors: a judge must sign off. The judge is supposed to evaluate whether the marriage serves the minor’s best interest. Some statutes list specific factors the judge must weigh, including whether the minor was coerced, whether there is any history of protective orders between the parties, and the minor’s maturity. If the judge sees signs of coercion or harm, the petition can be denied.
How seriously that review happens varies dramatically. Some states require the judge to interview the minor privately, appoint an attorney to represent the minor’s interests, and screen for domestic violence. Others treat the hearing as a formality that confirms the parents agreed. The court’s order becomes a public record and must be filed with the license application.
Age-Gap Restrictions
A growing number of states cap how much older the adult spouse can be. The limits run from two years to seven years depending on the state, with most in the three-to-four-year range. When the proposed spouse exceeds the cap, the marriage cannot proceed regardless of parental consent or judicial approval. States without an age-gap statute leave the question to individual judges, which produces uneven results.
Pregnancy Exceptions
Some states let a minor marry if she is pregnant or has given birth. These provisions come from an older policy view that treated marriage as the appropriate response to a teenage pregnancy. States that keep the exception sometimes pair it with a higher age floor than their general rule allows. Arkansas, for example, permits marriage at 16 in cases of pregnancy with judicial approval.
Emancipation as a Pathway
A minor who has been legally declared an adult through emancipation can marry on the same terms as any other adult. The emancipation process itself requires a court to find that the minor is financially self-sufficient and capable of managing their own affairs. Several states treat court-ordered emancipation as the only route to marriage before 18, which effectively pushes the safeguard into the emancipation proceeding. Some states also impose a waiting period of around 15 days between the emancipation order and the marriage license to prevent rushed arrangements.
States With No Minimum Age Floor
Four states set no statutory minimum age for marriage: California, Mississippi, New Mexico, and Oklahoma. If the applicable exceptions are met, a child of any age could theoretically be married. California requires judicial approval for all minors but does not specify how young the minor can be. Mississippi and Oklahoma allow marriage below the standard age with parental consent but likewise set no floor. The absence of a floor does not mean very young children are routinely marrying in these states, but the law contains no absolute backstop against a parent or judge exercising poor judgment.
What Married Minors Still Cannot Do
A married minor is still a minor for most legal purposes. In many states, married teenagers cannot sign contracts, rent an apartment, open a bank account, or consent to their own medical treatment. They typically cannot hire an attorney. Most consequentially, they often cannot file for divorce, because divorce requires the legal capacity to initiate a lawsuit, which minors do not have.
The consequences compound if the marriage turns violent. Domestic violence shelters generally serve adults, and an unaccompanied minor may be turned away. A married teenager who leaves home can be treated as a runaway and returned to the spouse. Some states grant married minors a form of automatic emancipation that broadens their legal capacity, but the scope varies and may not cover every situation. This gap between the obligations of a spouse and the rights of an adult is one reason advocates have pushed for outright bans.
Federal Rules That Apply Once a Minor Is Married
State law controls whether the marriage is valid. Federal agencies then treat the marriage in the same way they would any other, with a few areas the searcher should know about.
Taxes and Financial Aid
For federal tax purposes, a married minor files as either married filing jointly or married filing separately. The IRS sets filing status by marital status on the last day of the tax year, with no age-based exceptions.2Internal Revenue Service. Filing Status Parents can no longer claim the minor as a dependent if the minor files a joint return with a spouse. On the FAFSA, a married student counts as independent regardless of age, and the student reports their own and their spouse’s income rather than their parents’.
Social Security
A legally married minor qualifies for Social Security spousal and survivor benefits under the same rules as an adult spouse. If the working spouse dies, the surviving spouse can receive benefits at any age while caring for the deceased worker’s child who is under 16 or has a disability.3Social Security Administration. Survivors Benefits The Social Security Administration requires a marriage certificate but sets no minimum age on the surviving spouse.
Immigration
When a marriage involves a foreign national, U.S. Citizenship and Immigration Services reviews the spousal visa petition. The International Marriage Broker Regulation Act requires brokers who connect U.S. citizens with foreign nationals to collect extensive background information from the American client, including any history of domestic violence, sexual assault, restraining orders, and other criminal conduct. That information must be provided to the foreign national in their primary language before any personal contact information is shared.4Office of the Law Revision Counsel. 8 USC 1375a
Federal authorities can deny a visa petition if the marriage appears fraudulent or if there is evidence of trafficking or coercion, even when the marriage is valid under state law. Immigration document fraud is a serious federal offense; under the primary fraud statute, a first or second offense not connected to terrorism or drug trafficking can carry up to 10 years in prison.5Office of the Law Revision Counsel. 18 USC 1546