Mckinley is a distinctive girls' name in United States, ranking #900 in 2008 with 309 recorded births. The name reached its all-time peak in 2014 with 862 births ranking #379. Since 1996, the popularity has increased by 243.3%. In 2008, approximately 1 in every 6,119 girls born was named Mckinley. FALLING Recent data shows the name is currently falling.