Nanci is a distinctive girls' name in United States, ranking #11952 in 2012 with 9 recorded births. The name reached its all-time peak in 2001 with 59 births ranking #2590. Since 1996, the popularity has decreased by 81.3%. In 2012, approximately 1 in every 195,638 girls born was named Nanci. FALLING Recent data shows the name is currently falling.