Keir is a distinctive boys' name in United States, ranking #5859 in 2001 with 12 recorded births. The name reached its all-time peak in 1996 with 21 births ranking #3342. Since 1996, the popularity has decreased by 42.9%. In 2001, approximately 1 in every 161,903 boys born was named Keir. FALLING Recent data shows the name is currently falling.