Jethro is a distinctive boys' name in United States, ranking #4555 in 1997 with 14 recorded births. The name reached its all-time peak in 2025 with 245 births ranking #953. Since 1996, the popularity has decreased by 17.6%. In 1997, approximately 1 in every 134,649 boys born was named Jethro. RISING Recent data shows the name is currently rising.