Mackensie is a distinctive girls' name in United States, ranking #5823 in 2009 with 24 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 50.0%. In 2009, approximately 1 in every 76,536 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.