Janson is a distinctive boys' name in United States, ranking #2741 in 1998 with 30 recorded births. The name reached its all-time peak in 2016 with 35 births ranking #3256. Since 1996, the popularity has increased by 20.0%. In 1998, approximately 1 in every 63,711 boys born was named Janson. FALLING Recent data shows the name is currently falling.