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What is the maximum age for a child on the K-4 visa?

The K-4 visa is intended for unmarried children under 21 years of age of the K-3 holder, allowing their entry and stay in the U.S. during the residency process.

Written by

Victoria Harper

Editor-in-Chief

Updated on December 15, 2025
2 min read
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Let”s start by providing some context about the topic. The K-4 visa is intended for minor children accompanying the K-3 visa holder, which is granted to the foreign spouse of a U.S. citizen in certain situations. Therefore, this visa allows the children to also enter and remain in the United States during the processing of the permanent residence application.

Regarding the eligibility of children under the K-4 visa, U.S. immigration law states that they must be under 21 years old and, additionally, remain children only if they are unmarried. This means that, to qualify for the K-4 visa, the child cannot have reached 21 years of age at the time of the petition nor be married.

It is important to always emphasize the need to strictly follow current immigration laws. In cases of doubt or when dealing with specific and complex issues, it is advisable to seek guidance from reliable sources and, if necessary, consult professionals specialized in the subject. This way, you protect yourself against risks of misinformation, scams, and marketing campaigns that may promise miraculous solutions.

Remember, staying informed about the requirements and changes in immigration policies is fundamental for success in any process. Maintaining compliance with U.S. legislation promotes a smoother journey and prevents future complications.

Learn more about K-3

Purpose
Spouse of U.S. citizen
Duration
2 years
Work
Authorized
Processing
12-18 months
All about K-3

About the author

Victoria Harper

Editor-in-Chief

Meet the author

As a journalist and lead editor at Visto n’ Visa, Victoria helps ensure that immigration topics are covered in a clear, trustworthy, and easy-to-understand way. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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What is the maximum age for a child on the K-4 visa?

The K-4 visa is intended for unmarried children under 21 years of age of the K-3 holder, allowing their entry and stay in the U.S. during the residency process.

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