Nelsy is a distinctive girls' name in United States, ranking #8991 in 2000 with 11 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #8065. Since 1996, the popularity has increased by 120.0%. In 2000, approximately 1 in every 165,088 girls born was named Nelsy. FALLING Recent data shows the name is currently falling.