Mckynzie is a distinctive girls' name in United States, ranking #3569 in 2014 with 44 recorded births. The name reached its all-time peak in 2012 with 45 births ranking #3564. Since 1996, the popularity has increased by 238.5%. In 2014, approximately 1 in every 40,589 girls born was named Mckynzie. FALLING Recent data shows the name is currently falling.