Mackinley is a distinctive boys' name in United States, ranking #6921 in 2005 with 11 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 31.3%. In 2005, approximately 1 in every 181,559 boys born was named Mackinley. RISING Recent data shows the name is currently rising.