Nanci is a distinctive girls' name in United States, ranking #8760 in 2009 with 14 recorded births. This places Nanci in the top 43% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2001 with 59 births ranking #2590. Since 1996, the popularity has decreased by 70.8%. In 2009, approximately 1 in every 131,205 girls born was named Nanci. FALLING Recent data shows the name is currently falling.