Portia is a distinctive girls' name in United States, ranking #3036 in 2013 with 55 recorded births. The name reached its all-time peak in 2001 with 100 births ranking #1793. Since 1996, the popularity has decreased by 21.4%. In 2013, approximately 1 in every 31,898 girls born was named Portia. STABLE Recent data shows the name is currently stable.