Mckinley is a moderately popular girls' name in United States, ranking #438 in 2017 with 729 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 710.0%. In 2017, approximately 1 in every 2,367 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.