Mar is a distinctive girls' name in United States, ranking #5774 in 2020 with 21 recorded births. This places Mar in the top 33% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 120 births ranking #1708. In 2020, approximately 1 in every 76,929 girls born was named Mar. RISING Recent data shows the name is currently rising.