Nelsy is a distinctive girls' name in United States, ranking #9995 in 2007 with 12 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #8065. Since 1996, the popularity has increased by 140.0%. In 2007, approximately 1 in every 160,204 girls born was named Nelsy. FALLING Recent data shows the name is currently falling.