Mackinley is a distinctive boys' name in United States, ranking #6197 in 2012 with 14 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 12.5%. In 2012, approximately 1 in every 135,473 boys born was named Mackinley. RISING Recent data shows the name is currently rising.