Cleo is a distinctive girls' name in United States, ranking #577 in 2025 with 516 recorded births. The name reached its all-time peak in 2025 with 516 births ranking #577. Since 1996, the popularity has increased by 774.6%. In 2025, approximately 1 in every 3,115 girls born was named Cleo. STABLE Recent data shows the name is currently stable.