Mckinnley is a distinctive boys' name in United States, ranking #11561 in 2000 with 5 recorded births. The name reached its all-time peak in 2011 with 9 births ranking #8535. Since 1996, the popularity has decreased by 16.7%. In 2000, approximately 1 in every 392,786 boys born was named Mckinnley. FALLING Recent data shows the name is currently falling.