Mckinley is a distinctive girls' name in United States, ranking #759 in 2009 with 376 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 317.8%. In 2009, approximately 1 in every 4,885 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.