Mckinley is a moderately popular girls' name in United States, ranking #428 in 2016 with 759 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 743.3%. In 2016, approximately 1 in every 2,334 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.