Portia is a distinctive girls' name in United States, ranking #2749 in 1998 with 49 recorded births. The name reached its all-time peak in 2001 with 100 births ranking #1793. Since 1996, the popularity has decreased by 30.0%. In 1998, approximately 1 in every 36,059 girls born was named Portia. STABLE Recent data shows the name is currently stable.