Nanci is a distinctive girls' name in United States, ranking #3705 in 2005 with 40 recorded births. The name reached its all-time peak in 2001 with 59 births ranking #2590. Since 1996, the popularity has decreased by 16.7%. In 2005, approximately 1 in every 46,192 girls born was named Nanci. FALLING Recent data shows the name is currently falling.