Portia is a distinctive girls' name in United States, ranking #1793 in 2001 with 100 recorded births. The name reached its all-time peak in 2001 with 100 births ranking #1793. Since 1996, the popularity has increased by 42.9%. In 2001, approximately 1 in every 18,006 girls born was named Portia. STABLE Recent data shows the name is currently stable.