Mckinley is a distinctive girls' name in United States, ranking #1058 in 2004 with 219 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 143.3%. In 2004, approximately 1 in every 8,384 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.