Jethro is a distinctive boys' name in United States, ranking #3641 in 1999 with 21 recorded births. The name reached its all-time peak in 2025 with 245 births ranking #953. Since 1996, the popularity has increased by 23.5%. In 1999, approximately 1 in every 91,433 boys born was named Jethro. RISING Recent data shows the name is currently rising.