What is a K-4 visa?
Updated Mar. 25, 2026Refreshed annually
The K-4 visa is available to the unmarried children under 21 of a K-3 visa holder. It allows these children to enter the United States while they wait for their immigrant visa applications to be processed.
The length of stay for a K-4 visa is typically up to two years. However, the visa automatically expires once the child turns 21.
The State Department does not maintain a cap on K-4 visas.
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