Samanthajo is a distinctive girls' name in United States, ranking #7948 in 2000 with 13 recorded births. The name reached its all-time peak in 1997 with 13 births ranking #7196. Since 1996, the popularity has increased by 44.4%. In 2000, approximately 1 in every 139,690 girls born was named Samanthajo. FALLING Recent data shows the name is currently falling.