Jethro is a distinctive boys' name in United States, ranking #3596 in 2008 with 30 recorded births. The name reached its all-time peak in 2025 with 245 births ranking #953. Since 1996, the popularity has increased by 76.5%. In 2008, approximately 1 in every 67,998 boys born was named Jethro. RISING Recent data shows the name is currently rising.