Mackensie is a distinctive girls' name in United States, ranking #5479 in 2006 with 25 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 47.9%. In 2006, approximately 1 in every 76,043 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.