Sir is a distinctive boys' name in United States, ranking #3354 in 2012 with 33 recorded births. The name reached its all-time peak in 2021 with 123 births ranking #1466. Since 1996, the popularity has increased by 73.7%. In 2012, approximately 1 in every 57,473 boys born was named Sir. FALLING Recent data shows the name is currently falling.