Sullivan is a moderately popular boys' name in United States, ranking #358 in 2023 with 918 recorded births. The name reached its all-time peak in 2024 with 1,011 births ranking #339. Since 1996, the popularity has increased by 1,270.1%. In 2023, approximately 1 in every 1,861 boys born was named Sullivan. RISING Recent data shows the name is currently rising.