Portia is a distinctive girls' name in United States, ranking #3691 in 2015 with 42 recorded births. The name reached its all-time peak in 2001 with 100 births ranking #1793. Since 1996, the popularity has decreased by 40.0%. In 2015, approximately 1 in every 42,492 girls born was named Portia. STABLE Recent data shows the name is currently stable.