Mckinley is a distinctive girls' name in United States, ranking #1441 in 1998 with 119 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 32.2%. In 1998, approximately 1 in every 14,848 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.