Mackinley is a distinctive boys' name in United States, ranking #8580 in 2021 with 9 recorded births. The name reached its all-time peak in 1999 with 23 births ranking #3447. Since 1996, the popularity has decreased by 43.8%. In 2021, approximately 1 in every 194,249 boys born was named Mackinley. RISING Recent data shows the name is currently rising.