Nikki is a distinctive girls' name in United States, ranking #599 in 1999 with 407 recorded births. The name reached its all-time peak in 1996 with 691 births ranking #385. Since 1996, the popularity has decreased by 41.1%. In 1999, approximately 1 in every 4,358 girls born was named Nikki. FALLING Recent data shows the name is currently falling.