Nils is a distinctive boys' name in United States, ranking #5136 in 2011 with 18 recorded births. The name reached its all-time peak in 1999 with 39 births ranking #2329. Since 1996, the popularity has decreased by 47.1%. In 2011, approximately 1 in every 105,499 boys born was named Nils. FALLING Recent data shows the name is currently falling.