Unknown is a distinctive boys' name in United States, ranking #3199 in 2024 with 38 recorded births. The name reached its all-time peak in 2009 with 113 births ranking #1484. Since 1996, the popularity has decreased by 28.3%. In 2024, approximately 1 in every 45,140 boys born was named Unknown. FALLING Recent data shows the name is currently falling.