Petra is a distinctive girls' name in United States, ranking #1764 in 1996 with 85 recorded births. This places Petra in the top 11% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 176 births ranking #1351. In 1996, approximately 1 in every 20,623 girls born was named Petra. STABLE Recent data shows the name is currently stable.