Nelsy is a distinctive girls' name in United States, ranking #9876 in 1998 with 9 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #8065. Since 1996, the popularity has increased by 80.0%. In 1998, approximately 1 in every 196,321 girls born was named Nelsy. FALLING Recent data shows the name is currently falling.