Sir is a distinctive boys' name in United States, ranking #2745 in 2002 with 35 recorded births. The name reached its all-time peak in 2021 with 123 births ranking #1466. Since 1996, the popularity has increased by 84.2%. In 2002, approximately 1 in every 55,471 boys born was named Sir. FALLING Recent data shows the name is currently falling.