Mckinley is a moderately popular girls' name in United States, ranking #458 in 2012 with 682 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 657.8%. In 2012, approximately 1 in every 2,582 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.