Nilsa is a distinctive girls' name in United States, ranking #11082 in 2003 with 9 recorded births. This places Nilsa in the bottom 40% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 13 births ranking #7024. Since 1996, the popularity has decreased by 30.8%. In 2003, approximately 1 in every 203,006 girls born was named Nilsa. FALLING Recent data shows the name is currently falling.