Nanci is a distinctive girls' name in United States, ranking #3605 in 2004 with 41 recorded births. The name reached its all-time peak in 2001 with 59 births ranking #2590. Since 1996, the popularity has decreased by 14.6%. In 2004, approximately 1 in every 44,783 girls born was named Nanci. FALLING Recent data shows the name is currently falling.