Jethro is a distinctive boys' name in United States, ranking #3305 in 2002 with 27 recorded births. The name reached its all-time peak in 2025 with 245 births ranking #953. Since 1996, the popularity has increased by 58.8%. In 2002, approximately 1 in every 71,906 boys born was named Jethro. RISING Recent data shows the name is currently rising.