Kairo is a moderately popular boys' name in United States, ranking #226 in 2025 with 1,577 recorded births. The name reached its all-time peak in 2025 with 1,577 births ranking #226. Since 1996, the popularity has increased by 12,030.8%. In 2025, approximately 1 in every 1,083 boys born was named Kairo. STABLE Recent data shows the name is currently stable.