Mackenna is a distinctive girls' name in United States, ranking #1421 in 2007 with 167 recorded births. The name reached its all-time peak in 2008 with 187 births ranking #1322. Since 1996, the popularity has increased by 68.7%. In 2007, approximately 1 in every 11,512 girls born was named Mackenna. FALLING Recent data shows the name is currently falling.