Mckinley is a distinctive girls' name in United States, ranking #1052 in 2005 with 227 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 152.2%. In 2005, approximately 1 in every 8,140 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.