Mackensie is a distinctive girls' name in United States, ranking #2959 in 1997 with 41 recorded births. The name reached its all-time peak in 1998 with 63 births ranking #2269. Since 1996, the popularity has decreased by 14.6%. In 1997, approximately 1 in every 42,455 girls born was named Mackensie. FALLING Recent data shows the name is currently falling.