Nelsy is a distinctive girls' name in United States, ranking #9907 in 2025 with 10 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #8065. Since 1996, the popularity has increased by 100.0%. In 2025, approximately 1 in every 160,727 girls born was named Nelsy. FALLING Recent data shows the name is currently falling.