Finnly is a distinctive girls' name in United States, ranking #17338 in 2015 with 5 recorded births. This places Finnly in the bottom 9% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 5 births ranking #18547. In 2015, approximately 1 in every 356,931 girls born was named Finnly. STABLE Recent data shows the name is currently stable.