Niel is a distinctive boys' name in United States, ranking #6960 in 2007 with 12 recorded births. The name reached its all-time peak in 2001 with 13 births ranking #5585. Since 1996, the popularity has increased by 20.0%. In 2007, approximately 1 in every 172,936 boys born was named Niel. FALLING Recent data shows the name is currently falling.