Jansen is a distinctive girls' name in United States, ranking #11543 in 2002 with 8 recorded births. The name reached its all-time peak in 1997 with 18 births ranking #5498. Since 1996, the popularity has decreased by 46.7%. In 2002, approximately 1 in every 224,603 girls born was named Jansen. FALLING Recent data shows the name is currently falling.