Sir is a distinctive boys' name in United States, ranking #2337 in 2017 with 56 recorded births. The name reached its all-time peak in 2021 with 123 births ranking #1466. Since 1996, the popularity has increased by 194.7%. In 2017, approximately 1 in every 33,041 boys born was named Sir. FALLING Recent data shows the name is currently falling.