Thelonious is a distinctive boys' name in United States, ranking #5847 in 2024 with 16 recorded births. The name reached its all-time peak in 2017 with 23 births ranking #4448. Since 1996, the popularity has increased by 166.7%. In 2024, approximately 1 in every 107,207 boys born was named Thelonious. STABLE Recent data shows the name is currently stable.