Nanci is a distinctive girls' name in United States, ranking #4545 in 2006 with 32 recorded births. The name reached its all-time peak in 2001 with 59 births ranking #2590. Since 1996, the popularity has decreased by 33.3%. In 2006, approximately 1 in every 59,408 girls born was named Nanci. FALLING Recent data shows the name is currently falling.