Keir is a distinctive boys' name in United States, ranking #4577 in 1997 with 14 recorded births. The name reached its all-time peak in 1996 with 21 births ranking #3342. Since 1996, the popularity has decreased by 33.3%. In 1997, approximately 1 in every 134,649 boys born was named Keir. FALLING Recent data shows the name is currently falling.