Jonathon is a moderately popular boys' name in United States, ranking #207 in 1999 with 1,648 recorded births. The name reached its all-time peak in 1996 with 1,972 births ranking #171. Since 1996, the popularity has decreased by 16.4%. In 1999, approximately 1 in every 1,165 boys born was named Jonathon. FALLING Recent data shows the name is currently falling.