Kelsey is a distinctive boys' name in England & Wales, ranking #563 in 1999 with 33 recorded births. The name reached its all-time peak in 1999 with 33 births ranking #563. Since 1996, the popularity has increased by 73.7%. In 1999, approximately 1 in every 9,189 boys born was named Kelsey. FALLING Recent data shows the name is currently falling.