Unknown is a distinctive boys' name in United States, ranking #1997 in 2023 with 77 recorded births. The name reached its all-time peak in 2009 with 113 births ranking #1484. Since 1996, the popularity has increased by 45.3%. In 2023, approximately 1 in every 22,189 boys born was named Unknown. FALLING Recent data shows the name is currently falling.