Nils is a distinctive boys' name in United States, ranking #3363 in 1998 with 23 recorded births. The name reached its all-time peak in 1999 with 39 births ranking #2329. Since 1996, the popularity has decreased by 32.4%. In 1998, approximately 1 in every 83,101 boys born was named Nils. FALLING Recent data shows the name is currently falling.