Bly is a distinctive boys' name in United States, ranking #9696 in 2006 with 7 recorded births. This places Bly in the bottom 31% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2002 with 12 births ranking #5764. In 2006, approximately 1 in every 293,588 boys born was named Bly. RISING Recent data shows the name is currently rising.