Sir is a distinctive boys' name in United States, ranking #2602 in 1997 with 31 recorded births. The name reached its all-time peak in 2021 with 123 births ranking #1466. Since 1996, the popularity has increased by 63.2%. In 1997, approximately 1 in every 60,809 boys born was named Sir. FALLING Recent data shows the name is currently falling.