Millianna is a distinctive girls' name in United States, ranking #6391 in 2015 with 20 recorded births. This places Millianna in the top 33% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 20 births ranking #6391. In 2015, approximately 1 in every 89,233 girls born was named Millianna. FALLING Recent data shows the name is currently falling.