Mckinley is a moderately popular girls' name in United States, ranking #392 in 2013 with 792 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 780.0%. In 2013, approximately 1 in every 2,215 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.