Katelin is a distinctive girls' name in England & Wales, ranking #771 in 2003 with 35 recorded births. The name reached its all-time peak in 2006 with 45 births ranking #696. Since 1996, the popularity has increased by 775.0%. In 2003, approximately 1 in every 7,962 girls born was named Katelin. FALLING Recent data shows the name is currently falling.