Mackensie is a distinctive girls' name in United States, ranking #3490 in 2000 with 38 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 20.8%. In 2000, approximately 1 in every 47,789 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.